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https://en.wikipedia.org/wiki/Howard%20Georgi | Howard Mason Georgi III (born January 6, 1947) is an American theoretical physicist and the Mallinckrodt Professor of Physics and Harvard College Professor at Harvard University. He is also director of undergraduate studies in physics. He was co-master and then faculty dean of Leverett House with his wife, Ann Blake Ge... |
https://en.wikipedia.org/wiki/TERON%20%28Tillage%20erosion%29 | TERON is a foundation dedicated to the assessment of tillage related erosion in Europe.
See also
Conservation biology
Environmental protection
Habitat conservation
Natural environment
Natural resource
Sustainability
Tillage erosion
External links
http://www.ex.ac.uk/~yszhang/teron/
https://web.archive.org/w... |
https://en.wikipedia.org/wiki/Paul%20Zamecnik | Paul Charles Zamecnik (November 22, 1912 – October 27, 2009) was an American scientist who played a central role in the early history of molecular biology. He was a professor of medicine at Harvard Medical School and a senior scientist at Massachusetts General Hospital. Zamecnik pioneered the in vitro synthesis of pr... |
https://en.wikipedia.org/wiki/Marv%20Kaisersatt | Marvin Robert Kaisersatt is an American woodcarver. He was born in Montgomery, Minnesota February 1, 1939 to Bessie and Benjamin Kaisersatt.
Career
After high school in Montgomery, MN, Kaisersatt graduated from St. John's University in Collegeville, MN, with a degree in Mathematics. He then joined the US Army and spe... |
https://en.wikipedia.org/wiki/Dante%20Lauretta | Dante S. Lauretta (born 1970) is a professor of planetary science and cosmochemistry at the University of Arizona's Lunar and Planetary Laboratory. He is the principal investigator on NASA's OSIRIS-REx mission.
Education
Lauretta grew up in Arizona and received a B.S. in physics and mathematics and a B.A. in Oriental ... |
https://en.wikipedia.org/wiki/Ted%20Gold | Theodore "Ted" Gold (December 13, 1947 – March 6, 1970) was a member of Weather Underground who died in the 1970 Greenwich Village townhouse explosion.
Early years and education
Gold, a red diaper baby, was the son of Hyman Gold, a prominent Jewish physician and of a mathematics instructor at Columbia University who h... |
https://en.wikipedia.org/wiki/Parallelizable%20manifold | In mathematics, a differentiable manifold of dimension n is called parallelizable if there exist smooth vector fields
on the manifold, such that at every point of the tangent vectors
provide a basis of the tangent space at . Equivalently, the tangent bundle is a trivial bundle, so that the associated principal bu... |
https://en.wikipedia.org/wiki/Stunted%20projective%20space | In mathematics, a stunted projective space is a construction on a projective space of importance in homotopy theory, introduced by . Part of a conventional projective space is collapsed down to a point.
More concretely, in a real projective space, complex projective space or quaternionic projective space
KPn,
where ... |
https://en.wikipedia.org/wiki/Spanier%E2%80%93Whitehead%20duality | In mathematics, Spanier–Whitehead duality is a duality theory in homotopy theory, based on a geometrical idea that a topological space X may be considered as dual to its complement in the n-sphere, where n is large enough. Its origins lie in Alexander duality theory, in homology theory, concerning complements in manifo... |
https://en.wikipedia.org/wiki/Hermitian%20function | In mathematical analysis, a Hermitian function is a complex function with the property that its complex conjugate is equal to the original function with the variable changed in sign:
(where the indicates the complex conjugate) for all in the domain of . In physics, this property is referred to as PT symmetry.
This... |
https://en.wikipedia.org/wiki/Alexander%20duality | In mathematics, Alexander duality refers to a duality theory initiated by a result of J. W. Alexander in 1915, and subsequently further developed, particularly by Pavel Alexandrov and Lev Pontryagin. It applies to the homology theory properties of the complement of a subspace X in Euclidean space, a sphere, or other ma... |
https://en.wikipedia.org/wiki/Chemism | Chemism refers to forces of attraction or adhesion between entities. It has uses in chemistry and philosophy.
Chemistry
In the past, chemism referred to intramolecular forces between atoms, or more generally, any forces acting on atoms and molecules. It is now typically superseded by more precise terms such as hydro... |
https://en.wikipedia.org/wiki/Reduced%20homology | In mathematics, reduced homology is a minor modification made to homology theory in algebraic topology, motivated by the intuition that all of the homology groups of a single point should be equal to zero. This modification allows more concise statements to be made (as in Alexander duality) and eliminates many exceptio... |
https://en.wikipedia.org/wiki/Sensory%20threshold | In psychophysics, sensory threshold is the weakest stimulus that an organism can sense. Unless otherwise indicated, it is usually defined as the weakest stimulus that can be detected half the time, for example, as indicated by a point on a probability curve. Methods have been developed to measure thresholds in any of t... |
https://en.wikipedia.org/wiki/Nasrin%20Soltankhah | Nasrin Soltankhah () is an Iranian politician who was a Vice President under Mahmoud Ahmadinejad from 2009 to 2013.
Education
Soltankhan received a Bachelor of Science in Mathematics (1976), a Master of Science in Mathematics (1978), and a PhD in Mathematics (1994) from Sharif University of Technology.
Career
Cabine... |
https://en.wikipedia.org/wiki/Institut%20d%27Astrophysique%20de%20Paris | The Institut d'Astrophysique de Paris (translated: Paris Institute of Astrophysics) is a research institute in Paris, France. The Institute is part of the Sorbonne University and is associated with the CNRS Centre national de la recherche scientifique. It is located at 98bis, Boulevard Arago Il in the 14th arrondisseme... |
https://en.wikipedia.org/wiki/Carbon%E2%80%93hydrogen%20bond | In chemistry, the carbon-hydrogen bond ( bond) is a chemical bond between carbon and hydrogen atoms that can be found in many organic compounds. This bond is a covalent, single bond, meaning that carbon shares its outer valence electrons with up to four hydrogens. This completes both of their outer shells, making them... |
https://en.wikipedia.org/wiki/Rog-2000 | Rog-2000 (pronounced "Rahj-two-thousand", and sometimes spelled "ROG 2000") is a fictional robot that was the first professional creation of comic book artist-writer John Byrne. Rog-2000 serves as the mascot of Byrne Robotics.
Publication history
The character began life during Byrne's fan-artist days in the 1970s, a... |
https://en.wikipedia.org/wiki/OGF | OGF can refer to:
Open Gaming Foundation for role-playing games
Open Grid Forum for grid computing
Ordinary generating function in mathematics
Opioid growth factor, an alternative name for met-enkephalin |
https://en.wikipedia.org/wiki/Menadione | Menadione is a natural organic compound with the formula C6H4(CO)2C2H(CH3). It is an analog of 1,4-naphthoquinone with a methyl group in the 2-position. It is sometimes called vitamin K3. Use is allowed as a nutritional supplement in animal feed because of its vitamin K activity.
Biochemistry
Menadione is converted t... |
https://en.wikipedia.org/wiki/Council%20for%20Responsible%20Genetics | The Council for Responsible Genetics (CRG) was a nonprofit NGO with a focus on biotechnology.
History
The Council for Responsible Genetics was founded in 1983 in Cambridge, Massachusetts.
An early voice concerned about the social and ethical implications of modern genetic technologies, CRG organized a 1985 Congress... |
https://en.wikipedia.org/wiki/Erd%C5%91s%E2%80%93Szekeres%20theorem | In mathematics, the Erdős–Szekeres theorem asserts that, given r, s, any sequence of distinct real numbers with length at least (r − 1)(s − 1) + 1 contains a monotonically increasing subsequence of length r or a monotonically decreasing subsequence of length s. The proof appeared in the same 1935 paper that mentions th... |
https://en.wikipedia.org/wiki/Amy%20B.%20Smith | Amy Smith (born November 4, 1962) is an American inventor, educator, and founder of the MIT D-Lab and senior lecturer of mechanical engineering at MIT.
Early life and education
Smith was born in Lexington, Massachusetts. Her father, Arthur Smith, was an electrical engineering professor at MIT.
Arthur Smith took his fa... |
https://en.wikipedia.org/wiki/Urca%20process | In astroparticle physics, an Urca process is a reaction which emits a neutrino and which is assumed to take part in cooling processes in neutron stars and white dwarfs. The process was first discussed by George Gamow and Mário Schenberg while they were visiting a casino named Cassino da Urca in Urca, Rio de Janeiro. ... |
https://en.wikipedia.org/wiki/Cartan%20formula | In mathematics, Cartan formula can mean:
one in differential geometry: , where , and are Lie derivative, exterior derivative, and interior product, respectively, acting on differential forms. See interior product for the detail. It is also called the Cartan homotopy formula or Cartan magic formula. This formula is n... |
https://en.wikipedia.org/wiki/Vlastimil%20Pt%C3%A1k | Vlastimil Pták (; November 8, 1925 in Prague – May 5 1999) was a Czech mathematician, who worked in functional analysis, theoretical numerical analysis, and linear algebra. Notable early work include generalizations of the open mapping theorem .
During 1945–49 Vlastimil Pták studied mathematics and physics at the Ch... |
https://en.wikipedia.org/wiki/Complete%20intersection | In mathematics, an algebraic variety V in projective space is a complete intersection if the ideal of V is generated by exactly codim V elements. That is, if V has dimension m and lies in projective space Pn, there should exist n − m homogeneous polynomials:
in the homogeneous coordinates Xj, which generate all other... |
https://en.wikipedia.org/wiki/James%20Irvine%20%28educator%29 | James Irvine (1793–1835) was an educator and Presbyterian minister who served as the second president of Ohio University, located in Athens, Ohio, from 1822 to 1824.
Irvine, a native of Washington County, New York, graduated from Union College, and was hired as a professor of mathematics at Ohio University in 1821. H... |
https://en.wikipedia.org/wiki/Altitude%20%28disambiguation%29 | Altitude is the height of an object over a datum.
It may also refer to:
Science and mathematics
Altitude (astronomy), one of the angular coordinates of the horizontal coordinate system
Altitude (triangle), in geometry, a line passing through one vertex of a triangle and perpendicular to the opposite side
Music
Altit... |
https://en.wikipedia.org/wiki/Grassmann%20number | In mathematical physics, a Grassmann number, named after Hermann Grassmann (also called an anticommuting number or supernumber), is an element of the exterior algebra over the complex numbers. The special case of a 1-dimensional algebra is known as a dual number. Grassmann numbers saw an early use in physics to express... |
https://en.wikipedia.org/wiki/Adjunction%20formula | In mathematics, especially in algebraic geometry and the theory of complex manifolds, the adjunction formula relates the canonical bundle of a variety and a hypersurface inside that variety. It is often used to deduce facts about varieties embedded in well-behaved spaces such as projective space or to prove theorems by... |
https://en.wikipedia.org/wiki/Canadian%20Society%20for%20Civil%20Engineering | The Canadian Society for Civil Engineering (CSCE) (French: Société canadienne de génie civil) was founded in 1887 as the Canadian Society of Civil Engineers, renamed in 1918 as the Engineering Institute of Canada (EIC), and re-established in June 1972 as a member society of the EIC under the slightly different but curr... |
https://en.wikipedia.org/wiki/Rotation%20system | In combinatorial mathematics, rotation systems (also called combinatorial embeddings or combinatorial maps) encode embeddings of graphs onto orientable surfaces by describing the circular ordering of a graph's edges around each vertex.
A more formal definition of a rotation system involves pairs of permutations; such a... |
https://en.wikipedia.org/wiki/Ryogo%20Kubo | was a Japanese mathematical physicist, best known for his works in statistical physics and non-equilibrium statistical mechanics.
Work
In the early 1950s, Kubo transformed research into the linear response properties of near-equilibrium condensed-matter systems, in particular the understanding of electron transport an... |
https://en.wikipedia.org/wiki/Concept%20drift | In predictive analytics, data science, machine learning and related fields, concept drift or drift is an evolution of data that invalidates the data model. It happens when the statistical properties of the target variable, which the model is trying to predict, change over time in unforeseen ways. This causes problems b... |
https://en.wikipedia.org/wiki/Wetted%20area | In fluid dynamics, the wetted area is the surface area that interacts with the working fluid or gas.
In maritime use, the wetted area is the area of the watercrafts hull which is immersed in water. This has a direct relationship on the overall hydrodynamic drag of the ship or submarine.
In aeronautics, the wetted ar... |
https://en.wikipedia.org/wiki/Folch%20solution | A Folch solution is a solution containing chloroform and methanol, usually in a 2:1 (vol/vol) ratio. One of its uses is in separating polar from nonpolar compounds, for example separating nonpolar lipids from polar proteins and carbohydrates in blood serum.
References
Reagents for organic chemistry
Solutions |
https://en.wikipedia.org/wiki/The%20Journal%20of%20Physical%20Chemistry%20A | The Journal of Physical Chemistry A is a scientific journal which reports research on the chemistry of molecules - including their dynamics, spectroscopy, kinetics, structure, bonding, and quantum chemistry. It is published weekly by the American Chemical Society.
Before 1997 the title was simply Journal of Physical ... |
https://en.wikipedia.org/wiki/The%20Journal%20of%20Physical%20Chemistry%20B | The Journal of Physical Chemistry B is a peer-reviewed scientific journal that covers research on several fields of material chemistry (macromolecules, soft matter, and surfactants) as well as statistical mechanics, thermodynamics, and biophysical chemistry. It has been published weekly since 1997 by the American Chem... |
https://en.wikipedia.org/wiki/Pi%20Tau%20Sigma | Pi Tau Sigma () is an international honor society in the field of mechanical engineering, with most chapters established in the United States. It honors mechanical engineering students who have exemplified the "principles of scholarship, character and service..." in the mechanical engineering profession.
History
Pi T... |
https://en.wikipedia.org/wiki/Peetre%20theorem | In mathematics, the (linear) Peetre theorem, named after Jaak Peetre, is a result of functional analysis that gives a characterisation of differential operators in terms of their effect on generalized function spaces, and without mentioning differentiation in explicit terms. The Peetre theorem is an example of a finit... |
https://en.wikipedia.org/wiki/Polyhedral%20skeletal%20electron%20pair%20theory | In chemistry the polyhedral skeletal electron pair theory (PSEPT) provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by Kenneth Wade, and were further developed by others including Michael Mingo... |
https://en.wikipedia.org/wiki/Lamina | Lamina may refer to:
People
Saa Emerson Lamina, Sierra Leonean politician
Tamba Lamina, Sierra Leonean politician and diplimat
Science and technology
Planar lamina, a two-dimensional planar closed surface with mass and density, in mathematics
Laminar flow, (or streamline flow) occurs when a fluid flows in paralle... |
https://en.wikipedia.org/wiki/Planar%20lamina | In mathematics, a planar lamina (or plane lamina) is a figure representing a thin, usually uniform, flat layer of the solid. It serves also as an idealized model of a planar cross section of a solid body in integration.
Planar laminas can be used to determine moments of inertia, or center of mass of flat figures, as w... |
https://en.wikipedia.org/wiki/Chromosomal%20polymorphism | In genetics, chromosomal polymorphism is a condition where one species contains members with varying chromosome counts or shapes. Polymorphism is a general concept in biology where more than one version of a trait is present in a population.
In some cases of differing counts, the difference in chromosome counts is the... |
https://en.wikipedia.org/wiki/Order%20dimension | In mathematics, the dimension of a partially ordered set (poset) is the smallest number of total orders the intersection of which gives rise to the partial order.
This concept is also sometimes called the order dimension or the Dushnik–Miller dimension of the partial order.
first studied order dimension; for a more de... |
https://en.wikipedia.org/wiki/Eilenberg%E2%80%93Steenrod%20axioms | In mathematics, specifically in algebraic topology, the Eilenberg–Steenrod axioms are properties that homology theories of topological spaces have in common. The quintessential example of a homology theory satisfying the axioms is singular homology, developed by Samuel Eilenberg and Norman Steenrod.
One can define a h... |
https://en.wikipedia.org/wiki/%E2%89%A4 | ≤ may refer to:
Inequality (mathematics), relation between values; a ≤ b means "a is less than or equal to b"
Subgroup, a subset of a given group in group theory; H ≤ G is read as "H is a subgroup of G" |
https://en.wikipedia.org/wiki/Allette%20Brooks | Allette Brooks is an American folk singer-songwriter from Long Beach, California. She graduated from Stanford University, majoring in human biology. Her song "Silicon Valley Rebel", about a feminist Web designer who "comes in to work every day in her bike shorts and political T-shirts", was featured in "Silicon Valley ... |
https://en.wikipedia.org/wiki/Phil%20Moorby | Phil Moorby () was a British engineer and computer scientist. Moorby was born and brought up in Birmingham, England, and studied Mathematics at Southampton University, England. Moorby received his master's degree in computer science from Manchester University, England, in 1974. He moved to the United States in 1983.
W... |
https://en.wikipedia.org/wiki/Mark%20Erelli | Mark Erelli (born June 20, 1974) is an American singer/songwriter, multi-instrumentalist, and touring folk musician from Reading, Massachusetts who earned a master's degree in evolutionary biology from the University of Massachusetts Amherst before pursuing a career in music. Erelli has released nine solo albums and t... |
https://en.wikipedia.org/wiki/Jerry%20Hobbs | Jerry R. Hobbs (born January 25, 1942) is an American researcher in the fields of computational linguistics, discourse analysis, and artificial intelligence.
Education
Hobbs earned his doctor's degree from New York University in 1974 in computer science and has taught at Yale University and the City University of New ... |
https://en.wikipedia.org/wiki/Weierstrass%20point | In mathematics, a Weierstrass point on a nonsingular algebraic curve defined over the complex numbers is a point such that there are more functions on , with their poles restricted to only, than would be predicted by the Riemann–Roch theorem.
The concept is named after Karl Weierstrass.
Consider the vector spaces... |
https://en.wikipedia.org/wiki/Chennai%20Mathematical%20Institute | Chennai Mathematical Institute (CMI) is a higher education and research institute in Chennai, India. It was founded in 1989 by the SPIC Science Foundation, and offers undergraduate and postgraduate programmes in physics, mathematics and computer science. CMI is noted for its research in algebraic geometry, in particula... |
https://en.wikipedia.org/wiki/Substring%20index | In computer science, a substring index is a data structure which gives substring search in a text or text collection in sublinear time. If you have a document of length , or a set of documents of total length , you can locate all occurrences of a pattern in time. (See Big O notation.)
The phrase full-text index is... |
https://en.wikipedia.org/wiki/Azumaya%20algebra | In mathematics, an Azumaya algebra is a generalization of central simple algebras to -algebras where need not be a field. Such a notion was introduced in a 1951 paper of Goro Azumaya, for the case where is a commutative local ring. The notion was developed further in ring theory, and in algebraic geometry, where Alex... |
https://en.wikipedia.org/wiki/Inverted%20index | In computer science, an inverted index (also referred to as a postings list, postings file, or inverted file) is a database index storing a mapping from content, such as words or numbers, to its locations in a table, or in a document or a set of documents (named in contrast to a forward index, which maps from documents... |
https://en.wikipedia.org/wiki/Left-right%20planarity%20test | In graph theory, a branch of mathematics, the left-right planarity test
or de Fraysseix–Rosenstiehl planarity criterion is a characterization of planar graphs based on the properties of the depth-first search trees, published by and used by them with Patrice Ossona de Mendez to develop a linear time planarity testing ... |
https://en.wikipedia.org/wiki/Instantaneous%20phase%20and%20frequency | Instantaneous phase and frequency are important concepts in signal processing that occur in the context of the representation and analysis of time-varying functions. The instantaneous phase (also known as local phase or simply phase) of a complex-valued function s(t), is the real-valued function:
where arg is the comp... |
https://en.wikipedia.org/wiki/Scheinerman%27s%20conjecture | In mathematics, Scheinerman's conjecture, now a theorem, states that every planar graph is the intersection graph of a set of line segments in the plane. This conjecture was formulated by E. R. Scheinerman in his Ph.D. thesis (1984), following earlier results that every planar graph could be represented as the intersec... |
https://en.wikipedia.org/wiki/Whitney%27s%20planarity%20criterion | In mathematics, Whitney's planarity criterion is a matroid-theoretic characterization of planar graphs, named after Hassler Whitney. It states that a graph G is planar if and only if its graphic matroid is also cographic (that is, it is the dual matroid of another graphic matroid).
In purely graph-theoretic terms, thi... |
https://en.wikipedia.org/wiki/Vittorio%20Fossombroni | Vittorio Fossombroni (15 September 175413 April 1844) was an Italian statesman, mathematician, economist and a distinguished drainage engineer.
Biography
Fossombroni was born at Arezzo. He was educated at the University of Pisa, where he devoted himself particularly to mathematics and hydraulics. He obtained an offici... |
https://en.wikipedia.org/wiki/Operad | In mathematics, an operad is a structure that consists of abstract operations, each one having a fixed finite number of inputs (arguments) and one output, as well as a specification of how to compose these operations. Given an operad , one defines an algebra over to be a set together with concrete operations on this s... |
https://en.wikipedia.org/wiki/Klein%20paradox | In 1929, physicist Oskar Klein obtained a surprising result by applying the Dirac equation to the familiar problem of electron scattering from a potential barrier. In nonrelativistic quantum mechanics, electron tunneling into a barrier is observed, with exponential damping. However, Klein's result showed that if the po... |
https://en.wikipedia.org/wiki/Trimethylsilyldiazomethane | Trimethylsilyldiazomethane is the organosilicon compound with the formula (CH3)3SiCHN2. It is classified as a diazo compound. Trimethylsilyldiazomethane is a commercially available reagent used in organic chemistry as a methylating agent and as a source of CH2 group. Its behavior is akin to the less convenient reage... |
https://en.wikipedia.org/wiki/Boolean%20expression | In computer science, a Boolean expression is an expression used in programming languages that produces a Boolean value when evaluated. A Boolean value is either true or false. A Boolean expression may be composed of a combination of the Boolean constants true or false, Boolean-typed variables, Boolean-valued operators,... |
https://en.wikipedia.org/wiki/Join%20%28topology%29 | In topology, a field of mathematics, the join of two topological spaces and , often denoted by or , is a topological space formed by taking the disjoint union of the two spaces, and attaching line segments joining every point in to every point in . The join of a space with itself is denoted by . The join is defined... |
https://en.wikipedia.org/wiki/Pl%C3%BCcker%20formula | In mathematics, a Plücker formula, named after Julius Plücker, is one of a family of formulae, of a type first developed by Plücker in the 1830s, that relate certain numeric invariants of algebraic curves to corresponding invariants of their dual curves. The invariant called the genus, common to both the curve and its... |
https://en.wikipedia.org/wiki/PDG | PDG may refer to:
Gabonese Democratic Party (Parti démocratique gabonais), the ruling party of Gabon
Democratic Party of Guinea or Parti démocratique de Guinée
Minangkabau International Airport, Padang, Indonesia IATA airport code
Particle Data Group, international group of particle physicists
Program dependence gra... |
https://en.wikipedia.org/wiki/Outbreeding%20depression | In biology, outbreeding depression happens when crosses between two genetically distant groups or populations result in a reduction of fitness. The concept is in contrast to inbreeding depression, although the two effects can occur simultaneously. Outbreeding depression is a risk that sometimes limits the potential for... |
https://en.wikipedia.org/wiki/Vector%20bundles%20on%20algebraic%20curves | In mathematics, vector bundles on algebraic curves may be studied as holomorphic vector bundles on compact Riemann surfaces, which is the classical approach, or as locally free sheaves on algebraic curves C in a more general, algebraic setting (which can for example admit singular points).
Some foundational results on... |
https://en.wikipedia.org/wiki/Viktor%20Arnar%20Ing%C3%B3lfsson | Viktor Arnar Ingólfsson (born 12 April 1955, in Akureyri) is an Icelandic writer of crime fiction. He has a B.Sc. degree in civil engineering and, in addition to having a successful career as a writer, he continues to work full-time at the Public Roads Administration in Iceland.
Viktor Arnar has twice been the Iceland... |
https://en.wikipedia.org/wiki/Opposite%20ring | In mathematics, specifically abstract algebra, the opposite of a ring is another ring with the same elements and addition operation, but with the multiplication performed in the reverse order. More explicitly, the opposite of a ring is the ring whose multiplication ∗ is defined by for all in R. The opposite ring ca... |
https://en.wikipedia.org/wiki/Quasi-Lie%20algebra | In mathematics, a quasi-Lie algebra in abstract algebra is just like a Lie algebra, but with the usual axiom
replaced by
(anti-symmetry).
In characteristic other than 2, these are equivalent (in the presence of bilinearity), so this distinction doesn't arise when considering real or complex Lie algebras. It can how... |
https://en.wikipedia.org/wiki/Far-infrared%20laser | Far-infrared laser or terahertz laser (FIR laser, THz laser) is a laser with output wavelength in between 30-1000 µm (frequency 0.3-10 THz), in the far infrared or terahertz frequency band of the electromagnetic spectrum.
FIR lasers have application in terahertz spectroscopy, terahertz imaging as well in fusion plasma... |
https://en.wikipedia.org/wiki/Whitehead%20product | In mathematics, the Whitehead product is a graded quasi-Lie algebra structure on the homotopy groups of a space. It was defined by J. H. C. Whitehead in .
The relevant MSC code is: 55Q15, Whitehead products and generalizations.
Definition
Given elements , the Whitehead bracket
is defined as follows:
The product ... |
https://en.wikipedia.org/wiki/Stacking%20%28chemistry%29 | In chemistry, pi stacking (also called π–π stacking) refers to the presumptive attractive, noncovalent pi interactions (orbital overlap) between the pi bonds of aromatic rings. However this is a misleading description of the phenomena since direct stacking of aromatic rings (the "sandwich interaction") is electrostati... |
https://en.wikipedia.org/wiki/The%20Magic%20Hour%20%28talk%20show%29 | The Magic Hour is an American talk show hosted by basketball player Earvin "Magic" Johnson. The series aired in syndication from June to September 1998.
Synopsis
Soon after its debut, the series was panned by critics citing Johnson's apparent nervousness as a host, his overly complimentary tone with his celebrity g... |
https://en.wikipedia.org/wiki/B%C3%A9zout%20domain | In mathematics, a Bézout domain is a form of a Prüfer domain. It is an integral domain in which the sum of two principal ideals is again a principal ideal. This means that for every pair of elements a Bézout identity holds, and that every finitely generated ideal is principal. Any principal ideal domain (PID) is a Béz... |
https://en.wikipedia.org/wiki/Holomorphic%20functional%20calculus | In mathematics, holomorphic functional calculus is functional calculus with holomorphic functions. That is to say, given a holomorphic function f of a complex argument z and an operator T, the aim is to construct an operator, f(T), which naturally extends the function f from complex argument to operator argument. More ... |
https://en.wikipedia.org/wiki/Coframe | In mathematics, a coframe or coframe field on a smooth manifold is a system of one-forms or covectors which form a basis of the cotangent bundle at every point. In the exterior algebra of , one has a natural map from , given by . If is dimensional a coframe is given by a section of such that . The inverse image... |
https://en.wikipedia.org/wiki/Daniel%20P.%20Friedman | Daniel Paul Friedman (born 1944) is a professor of Computer Science at Indiana University in Bloomington, Indiana. His research focuses on programming languages, and he is a prominent author in the field.
With David Wise, Friedman wrote a highly influential paper on lazy programming, specifically on lazy streams (ICA... |
https://en.wikipedia.org/wiki/CR%20manifold | In mathematics, a CR manifold, or Cauchy–Riemann manifold, is a differentiable manifold together with a geometric structure modeled on that of a real hypersurface in a complex vector space, or more generally modeled on an edge of a wedge.
Formally, a CR manifold is a differentiable manifold M together with a preferred... |
https://en.wikipedia.org/wiki/Barry%20Simon | Barry Martin Simon (born 16 April 1946) is an American mathematical physicist and was the IBM professor of Mathematics and Theoretical Physics at Caltech, known for his prolific contributions in spectral theory, functional analysis, and nonrelativistic quantum mechanics (particularly Schrödinger operators), including... |
https://en.wikipedia.org/wiki/Nakai%20conjecture | In mathematics, the Nakai conjecture is an unproven characterization of smooth algebraic varieties, conjectured by Japanese mathematician Yoshikazu Nakai in 1961.
It states that if V is a complex algebraic variety, such that its ring of differential operators is generated by the derivations it contains, then V is a smo... |
https://en.wikipedia.org/wiki/Ehud%20Hrushovski | Ehud Hrushovski (; born 30 September 1959) is a mathematical logician. He is a Merton Professor of Mathematical Logic at the University of Oxford and a Fellow of Merton College, Oxford. He was also Professor of Mathematics at the Hebrew University of Jerusalem.
Early life and education
Hrushovski's father, Benjamin H... |
https://en.wikipedia.org/wiki/Zariski%20geometry | In mathematics, a Zariski geometry consists of an abstract structure introduced by Ehud Hrushovski and Boris Zilber, in order to give a characterisation of the Zariski topology on an algebraic curve, and all its powers. The Zariski topology on a product of algebraic varieties is very rarely the product topology, but ri... |
https://en.wikipedia.org/wiki/Steve%20Ciarcia | Steve Ciarcia is an embedded control systems engineer. He became popular through his Ciarcia's Circuit Cellar column in BYTE magazine, and later through the Circuit Cellar magazine that he published. He is also the author of Build Your Own Z80 Computer, edited in 1981 and Take My Computer...Please!, published in 1978. ... |
https://en.wikipedia.org/wiki/Genetics%20and%20archaeogenetics%20of%20South%20Asia | Genetics and archaeogenetics of South Asia is the study of the genetics and archaeogenetics of the ethnic groups of South Asia. It aims at uncovering these groups' genetic histories. The geographic position of the Indian subcontinent makes its biodiversity important for the study of the early dispersal of anatomically ... |
https://en.wikipedia.org/wiki/Theta%20divisor | In mathematics, the theta divisor Θ is the divisor in the sense of algebraic geometry defined on an abelian variety A over the complex numbers (and principally polarized) by the zero locus of the associated Riemann theta-function. It is therefore an algebraic subvariety of A of dimension dim A − 1.
Classical theory
C... |
https://en.wikipedia.org/wiki/Polarizable%20vacuum | In theoretical physics, particularly fringe physics, polarizable vacuum (PV) and its associated theory refers to proposals by Harold Puthoff, Robert H. Dicke, and others to develop an analogue of general relativity to describe gravity and its relationship to electromagnetism.
Description
In essence, Dicke and Puthof... |
https://en.wikipedia.org/wiki/List%20of%20Lund%20University%20people | This is a list of notable people affiliated with Lund University, either as students or as researchers and academic teachers (or both). Lund University, located in the town of Lund in Skåne, Sweden, was founded in 1666.
Nobel laureates affiliated with Lund University
Manne Siegbahn (1886-1978), Physics 1924; professor... |
https://en.wikipedia.org/wiki/Poromechanics | Poromechanics is a branch of physics and specifically continuum mechanics and acoustics that studies the behaviour of fluid-saturated porous media. A porous medium or a porous material is a solid referred to as matrix) permeated by an interconnected network of pores (voids) filled with a fluid (liquid or gas). Usually ... |
https://en.wikipedia.org/wiki/Threading%20%28protein%20sequence%29 | In molecular biology, protein threading, also known as fold recognition, is a method of protein modeling which is used to model those proteins which have the same fold as proteins of known structures, but do not have homologous proteins with known structure.
It differs from the homology modeling method of structure pre... |
https://en.wikipedia.org/wiki/Grothendieck%E2%80%93Katz%20p-curvature%20conjecture | In mathematics, the Grothendieck–Katz p-curvature conjecture is a local-global principle for linear ordinary differential equations, related to differential Galois theory and in a loose sense analogous to the result in the Chebotarev density theorem considered as the polynomial case. It is a conjecture of Alexander Gro... |
https://en.wikipedia.org/wiki/Ethyl | Ethyl may refer to:
Arts and entertainment
Cold Ethyl, a Swedish rock band
Ethyl Sinclair, a character in the Dinosaurs television show
Science and technology
Ethyl group, an organic chemistry moiety
Ethyl alcohol (or ethanol)
Ethyl Corporation, a fuel additive company
Tetraethyllead-treated gasoline
See als... |
https://en.wikipedia.org/wiki/Systems%20biomedicine | Systems biomedicine, also called systems biomedical science, is the application of systems biology to the understanding and modulation of developmental and pathological processes in humans, and in animal and cellular models. Whereas systems biology aims at modeling exhaustive networks of interactions (with the long-ter... |
https://en.wikipedia.org/wiki/Mass%20flow%20%28life%20sciences%29 | In the life sciences, mass flow, also known as mass transfer and bulk flow, is the movement of fluids down a pressure or temperature gradient. As such, mass flow is a subject of study in both fluid dynamics and biology. Examples of mass flow include blood circulation and transport of water in vascular plant tissues. Ma... |
https://en.wikipedia.org/wiki/Principal%20ideal%20theorem | In mathematics, the principal ideal theorem of class field theory, a branch of algebraic number theory, says that extending ideals gives a mapping on the class group of an algebraic number field to the class group of its Hilbert class field, which sends all ideal classes to the class of a principal ideal. The phenomeno... |
https://en.wikipedia.org/wiki/Alexander%20Tropsha | Alexander Tropsha is a chemist and professor at the University of North Carolina - Chapel Hill. Tropsha is Associate Dean for Pharmacoinformatics and Data Science at the UNC Eshelman School of Pharmacy. His primary fields of research are cheminformatics and quantitative structure-activity relationship (QSAR) modeling ... |
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