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# Thread: Find Derivative/maximum/inflection from a graph?
1. ## Find Derivative/maximum/inflection from a graph?
Let g be a continuous function with g(2)=5. The graph of the piecewise-linear function g ' the derivative of g, is shown above for -3<=x<=7.
a) Find the x coordinate of all points of inflection of the gr... | |
Residue field of completion of a field finite type over the prime field
In Theory of p-adic Galois Representations by Fontaine and Yi Ouyang, there is a proof of Grothendieck l-adic monodromy theorem for general local fields:
Here a local field is a complete discrete valuation field with perfect residue field. But I ... | |
# Browse by Subject "Physics, Fluid and Plasma"
• (1993)
The propagation of acoustic waves in porous media is of interest in a variety of areas, including oil well logging, the seepage of contaminants into ground water supplies, and the flow of fluids in packed beds. The aim of ...
application/pdf
PDF (8MB)
• (2006)... | |
# 4.1 Floating-Point Decomposition
Floating-point arithmetic is based on the observation that every nonzero real number admits a representation of the form
where is an integer, called the exponent of , and is a number in the range , called the significand of . These components are defined as follows.
Definition 4.1... | |
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## Artifact 32dbb19d1a153363b59b9965cf13bbcf1ffccf42:
• File Tests/common.eagle — part of check-in [7e3aa2f8bb] at 2012-08-24 10:00:52 on branch trunk — Add support for testing the sqlite3_win32_set_directory function. Also, add the ToFullPath connection string pr... | |
# How to make a beep in android?
I would like my app beep with a specific frequency and duration. In the windows equivalent of this app (written in c#) I used a c++ dll with the function
beep(frequency, duration);
Is this the same in android? Or at least how can I put my c++ dll in the project?
I would prefer not ... | |
# Jack Plate - Plug and Play, Mono / Stereo
Click to zoom in
Customer Images:
No Images yet! Submit a product image below!
$20.95 This product is currently out of stock and will be placed on backorder. Please log in or register to receive an email when this item is back in stock. The Plug and Play eliminates the confu... | |
## Chemistry: The Central Science (13th Edition)
1. Calculate $[AgIO_3]$ after the dissolution: $V_f = 10ml + 20ml = 30ml$ $C_i * V_i = C_f * V_f$ $0.01 * 20 = C_f * 30$ $C_f \approx 6.667 \times 10^{-3}M$ 2. Calculate $[NaIO_3]$ after the dissolution: $C_i * V_i = C_f * V_f$ $0.015 * 10 = C_f * 30$ $C_f = 5 \times 10... | |
Logarithmic differentiation
1. Jun 19, 2008
Ry122
Question:
Find derivative of f(x)=((x^2)(x^3))/((x^4)(x^2))
Attempt:
ln f(x)=(lnx^2)+(lnx^3)-(lnx^4)-(lnx^2)
Can someone tell me what I have done wrong so far?
Thanks
2. Jun 19, 2008
rootX
forgot to take log of both sides?
bring your powers down.. oo well, u prol... | |
Sebastian von Hausegger Steps towards a clear view of the Cosmic Microwave Background 2019 Fabian Thiele An ATLAS search for sterile neutrinos 2019 Gorm Galster The Central Trigger Processor of the ATLAS Experiment at the LHC and its Monitoring 2019 Lais Ozelin de Lima PImentel Charged-particle multiplicity distributio... | |
## Differential k-Form
A differential -form is a Tensor of Rank which is antisymmetric under exchange of any pair of indices. The number of algebraically independent components in -D is , where this is a Binomial Coefficient. In particular, a 1-form (often simply called a differential'') is a quantity
(1)
where and... | |
Wow, these students are trying to build a computer completely out of K’NEX parts, here’s a calculator…
The K’NEX calculator stands over 10 feet tall, and can perform 4 bit addition and subtraction operations in about 30 seconds. The slowest part of the operation is the user entering the balls. From there the balls tri... | |
## LifeWiki Trusted Account Request Thread - Post requests here
For discussion directly related to ConwayLife.com, such as requesting changes to how the forums or wiki function.
Macbi
Posts: 784
Joined: March 29th, 2009, 4:58 am
### Re: Massive spam attacks on the wiki (and forums?)
Can someone add me as "trusted" o... | |
# Article Takedown/Update Request
This is an update request for the document Some notes on maximal arc intersection of spherical polygons: its $\mathcal{NP}$ -hardness and approximation algorithms by Yong-Jin Liu, Wen-Qi Zhang and Kai Tang
Your paper was deposited in MUCC (Crossref) and appears online at http://link... | |
## Operads of hypergraphs.(English. Russian original)Zbl 1282.18008
Russ. Math. 57, No. 4, 52-62 (2013); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2013, No. 4, 61-73 (2013).
For all $$n \geq 1$$, and any monoid $$G$$, the authors construct two operad structures on the set of cubic $$n$$-multidimensional matric... | |
RUS ENG JOURNALS PEOPLE ORGANISATIONS CONFERENCES SEMINARS VIDEO LIBRARY PACKAGE AMSBIB
General information Latest issue Archive Search papers Search references RSS Latest issue Current issues Archive issues What is RSS
Dokl. Akad. Nauk: Year: Volume: Issue: Page: Find
MATHEMATICS The method of projec... | |
# How to find the angle generated as a function of the speed of a bullet when it collisions to mass hanging to a ceiling?
#### Chemist116
The problem is as follows:
A bullet of mass $m$ collisions to a bob hanging vertically from a ceiling whose mass is $M$. As a result of this impact the bob with the bullet inside ... | |
# Math Help - Radians
1. ## Radians
I'm not sure how to do the following question
Express in degrees the angle whose radian measure is 0.5
Thanks in advance
2. Originally Posted by deltaxray
I'm not sure how to do the following question
Express in degrees the angle whose radian measure is 0.5
Thanks in advance
$... | |
# Problem #2290
Back to Logic page
2290 Barbara and Jenna play the following game, in which they take turns. A number of coins lie on a table. When it is Barbara’s turn, she must remove $2$ or $4$ coins, unless only one coin remains, in which case she loses her turn. What it is Jenna’s turn, she must remove $1$ or $... | |
# Ransomware
Ransomware is a type of malicious software that first infects a computer system. Once infected, users of the system can no longer access the system or parts of it. This means that important data stored on the system will no longer be accessible. If these systems are part of an organization, normal operati... | |
Designers often search for new solutions by iteratively adapting a current design. By engaging in this search, designers not only improve solution quality but also begin to learn what operational patterns might improve the solution in future iterations. Previous work in psychology has demonstrated that humans can fluen... | |
3 Tutor System
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# In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.Blood GroupNumber of students... | |
# closure
### Topology
The closure of a given set in a topological space is the smallest closed set containing the given set.
### Abstract Algebra
If $$F$$ is a field, the algebraic closure of $$F$$ is a field $$G$$ containing $$F$$ such that every polynomial with coefficients in $$F$$ has a root in $$G$$. | |
# How do you differentiate f(x)=xe^((lnx-2)^2 using the chain rule.?
Nov 1, 2016
$f ' \left(x\right) = 2 \left(\ln x - 2\right) {e}^{{\left(\ln x - 2\right)}^{2}} + {e}^{{\left(\ln x - 2\right)}^{2}}$
#### Explanation:
$f \left(x\right) = x {e}^{{\left(\ln x - 2\right)}^{2}}$
Use product rule and chain rule
$f ... | |
### Forgotten Number
I have forgotten the number of the combination of the lock on my briefcase. I did have a method for remembering it...
### Man Food
Sam displays cans in 3 triangular stacks. With the same number he could make one large triangular stack or stack them all in a square based pyramid. How many cans ar... | |
# Hinge joint attached to spring gets stuck
Because Hinge Joint 2D components do not have "spring properties" like their 3D counterparts, I made one. I did this by adding a Hinge Joint to connect Bones 1 and 2 of the tree. I then attached a Spring Joint to the circle above the tree, and connected this to the second bo... | |
# Publication [4.13] of Tomás Oliveira e Silva
Do not bookmark this page, because its URI may change in the future.
Instead, bookmark its parent page (http://sweet.ua.pt/tos/bib.html).
## Reference
Stephen D. Cohen, Tomás Oliveira e Silva and Tim Trudgian, "A Proof of the Conjecture of Cohen and Mullen on Sums of Pr... | |
# [NTG-context] How to start a \definedescription-defined description's body on a new line, not the same as the description's header?
Louis Strous Louis.Strous at intellimagic.com
Fri Oct 9 18:13:50 CEST 2015
With
[start sample]
...
\startcmddescription{mycommand}
This is a very useful command. It knows just wha... | |
# Is it possible neutron stars are actual elements?
As you go up the periodic table (more protons), the ratio of neutrons to protons steadily increases as well. Are we sure there are absolutely no protons and electrons in a neutron star, or could there be so much more neutrons that we cannot measure any protons and el... | |
Today’s goal was to understand and model VCO nonlinearity, specifically in $k_{VCO}$. Rather than just have $k_{VCO}$ as a linear function, it’s actually more similar to hyperbolic tan ($tanh(x)$). While that’s an ugly function, the output is actually quite simple. Instead of just having a normal linear function, we ju... | |
# What is a binary loss, and should I use a binary loss or a softmax loss for classification?
I was trying to understand the final section of the paper Revisiting Baselines for Visual Question Answering. The authors state that their model performs better with a binary loss in comparison to a softmax loss.
What is a b... | |
# Mesh Current - Difficult
#### Godsninja
Joined Apr 30, 2016
16
Hi again! I've refreshed myself on mesh-current, but this 1 problem (of 2) has stumped me. It's doesn't look overly difficult (topic name is to keep consistency) but my answers are wrong. I've taken a picture of the question, circuit, and my solution. T... | |
If you wish to contribute or participate in the discussions about articles you are invited to join Navipedia as a registered user
# Emission Time Computation
Fundamentals
Title Emission Time Computation
Author(s) J. Sanz Subirana, J.M. Juan Zornoza and M. Hernández-Pajares, Technical University of Catalonia, Spain.
Y... | |
Vectors will be our friend for understanding motion happening in more than one dimension. Required fields are marked *. ... All CBSE Notes for Class 11 Physics Maths Notes Chemistry Notes Biology Notes. Torque, τ = dL/dt Conservation of Angular Momentum If the external torque acting on a system is zero, then its angula... | |
(16 votes, average: 5.00 out of 5)
## Project Euler 4: Find the largest palindrome product
#### Project Euler 4 Description
Project Euler 4: A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99.
Find the largest palindrome made from the... | |
### Constraining neural networks
Fully-connected layers with arbitrary connectivity are commonly used in neural networks (both feed-forward and recurrent), but is the full power of an unconstrained, all-to-all connectivity matrix really needed for the network to perform well? A lot of empirical evidence suggests that ... | |
# Description of $A^\bullet(G/H)$ [closed]
Let $$G$$ be a compact Lie group and let $$H$$ be a closed subgroup of $$G$$, with Lie algebras $$\mathfrak{g}$$ and $$\mathfrak{h}$$.
We denote $$G\times_H \mathfrak{g} / \mathfrak{h}$$: the set of orbits $$(G \times \mathfrak{g} / \mathfrak{h})/H$$ of the right action of $... | |
# Recent questions tagged gateme-2016-set1
If $q^{-a}=\displaystyle{\frac{1}{r}}$ and $r^{-b}=\displaystyle{\frac{1}{s}}$ and $s^{-c}=\displaystyle{\frac{1}{q}}$, the value of $abc$ is $(rqs)^{-1}$ $0$ $1$ $r+q+s$
Leela is older than her cousin Pavithra. Pavithra's brother Shiva is older than Leela. When Pavithra and ... | |
Computation of a series.
NOTATIONS.
Let $n\in\mathbb{N}$. We define the sets $\mathfrak{M}_{0}:=\emptyset$ and \begin{align} \mathfrak{M}_{n}&:=\left\{m=\left(m_{1},m_{2},\ldots,m_{n}\right)\in\mathbb{N}^{n}\mid1m_{1}+2m_{2}+\ldots+nm_{n}=n\right\}&\forall n\geq1 \end{align} and we use the notations: \begin{align} m!... | |
# Why program with high level programming languages? (was PLCS: PLC Fortran)
B
#### Brian E Boothe
i'm not saying LL isnt usefull.... it is for its specific purpose.. but actually calling it a actual LANGUAGE is a bit far for me. user's AID
maybe..
S
Nice write-up
J
#### Joe Jansen
Interpreter v. Compiler is de... | |
Question
# In an isobaric reversible process, the ratio of heat supplied to the system (dq) and work done by the system (dW) for a ideal monoatomic gas is:
Solution
## At constant pressure, (isobaric process) heat supplied is given as: qp=nCpdT Cp for a monoatomic gas = 52R So, qp=52nR dT Work done by system is give... | |
# Solve the Circuit For Electromagnetism Unit
Tags: circuit, electromagnetism, solve, unit
P: 87 1. The problem statement, all variables and given/known data please visit this site and solve with calculations, Thank you! http://rapidshare.com/files/338079894/Figure_it_out.doc 2. Relevant equations V=IR Rt=1/R1+1/R2+1... | |
# Product (Category Theory)
This simultaneously captures the concept of a product of sets, posets, groups, topological spaces etc. In addition, like any universal construction, this characterization does not differentiate between isomorphic versions of the product, thus allowing one to abstract away from an arbitrary,... | |
smaller HP 82166A with 32-pin connector
09-14-2019, 07:50 AM (This post was last modified: 09-06-2021 07:26 AM by Klaus Overhage.)
Post: #1
Klaus Overhage Member Posts: 65 Joined: Jan 2016
smaller HP 82166A with 32-pin connector
The technical manual of the HP82166A HP-IL Converter describe a device with a 34-pin GPIO ... | |
Australian Maths Competition (1 Viewer)
Mongoose528
Member
How would you solve this algebraically: A nude number is a natural number of whose digits are a factor of the number. Find all 3 digit nude numbers where no digits are repeated.
Can't seem to make in roads :/
I can solve it case by case, but I want to know ... | |
GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 14 Nov 2018, 09:49
# Join Chat Room for Live Updates
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily P... | |
## Fooling with mathematicians
28/02/2013
I am still working with stochastic processes and, as my readers know, I have proposed a new view of quantum mechanics assuming that at the square root of a Wiener process can be attached a meaning (see here and here). I was able to generate it through a numerical code. A squa... | |
# mathlibdocumentation
analysis.calculus.affine_map
# Smooth affine maps #
This file contains results about smoothness of affine maps.
## Main definitions: #
• continuous_affine_map.cont_diff: a continuous affine map is smooth
theorem continuous_affine_map.cont_diff {𝕜 : Type u_1} {V : Type u_2} {W : Type u_3} [ ... | |
### Home > A2C > Chapter 12 > Lesson 12.3.1 > Problem12-137
12-137.
Verify that it is true for n = 1.
$5=\frac{(1)(3(1)+7)}{2}$
5 = 5
Assume that the identity is true for some arbitrary number k.
Prove that given the above assumption, the identity holds true for (k + 1). | |
# Numbers
A number in Dyon is a variable that stores floats with 64 bit precision. The type is f64.
a := 1
b := .5
c := 2.5
d := -3
e := 1_000_000
f := 1e6
g := -7_034.52e-22
You can add, subtract, multiply, divide, take the power and find the division reminder:
a := 2
b := a + 3
c := a - 3
d := a * 3
e := a^3
f :... | |
This is an archived post. You won't be able to vote or comment.
[–] 7 points8 points (1 child)
The important concept here is (in)exactness. Think of a Scheme number as numerical value together with a flag of exactness. If you measure something and get the result 3.9, then will represent the measurement with an inexa... | |
TOOLS FOR ASSESSMENT AND RISK REDUCTION IN THE FORMATION OF PLANS FOR ROCKET-SPACE TECHNOLOGY
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TOOLS FOR ASSESSMENT AND RISK REDUCTION IN THE FORMATION OF PLANS FOR ROCKET-SPACE TECHNOLOGY
Annotation
PII
S042473880000600-9-1
Publication type
Article
Status
Published
Authors
Edition
Pages
54-61
Abstract
De... | |
# Derivation of Circular Mean Square Error
I would like to understand how Eq. (36) in [2] was derived:
The rationale behind the definition of circular sample mean in Eq. (37) is clear, but there is no motiviation for the CMSE definition in Eq. (36).
[2] Lovell, Brian C., and Robert C. Williamson. "The statistical pe... | |
Note: Thoughts epressed within this workbook are my own and do not represent any prior, current nor future employers or affiliates
## Background - An Overview of Modelling in Specialty Insurance
Within the specialty insurance space we are typically insuring economic interests of relatively rare events of high impact ... | |
# Decision tree learning
Decision tree learning, used in statistics, data mining and machine learning, uses a decision tree as a predictive model which maps observations about an item to conclusions about the item's target value. More descriptive names for such tree models are classification trees or regression trees.... | |
### News Feeds
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TeXworks 0.4.5 released
News - LaTeX Editors
Written by Stefan Kottwitz
Sunday, 14 April 2013 15:46
The new stable TeXworks release 0.4.5 has been released today. TeXworks is a free and open source LaTeX editor running on Linux, Mac OS X and Windows. The new re... | |
This site is supported by donations to The OEIS Foundation.
# Double factorial
The double factorial (sometimes called the semifactorial) of a nonnegative integer
n
is defined as the product of positive integers having the same parity as
n
${\displaystyle n!!:=\prod _{i=1}^{n}[i\equiv n{\pmod {2}}]\,i,\quad n\geq 0,... | |
Article | Open | Published:
# Resistance mutations of Pro197, Asp376 and Trp574 in the acetohydroxyacid synthase (AHAS) affect pigments, growths, and competitiveness of Descurainia sophia L
Scientific Reportsvolume 7, Article number: 16380 (2017) | Download Citation
## Abstract
D. Sophia is one of the most problema... | |
## Finite fields And Error-Correcting Codes
After introducing the concept of finite fields and their properties, we look algebraic constructions of error correcting codes.
Year:
2006
Laboratories:
n/a:
DOC
Rate this document:
1
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• 按书本查看
Magoosh题集
Magoosh针对GRE考试备考材料相对可以，其推出的GMAT模考题对时间固定GMAT考生来说，老师并不建议过多时间花费在该材料上。这些题可以作为词汇拓展训练。
141 In Ophiuchus Corporation, 60% of the total revenue R is devoted to the advertising budget. Five-sixths of this advertising budget was spent on television advertising. Which of the following represents the dollar am... | |
# 8. A nurse is caring for a client who has a prescription for a stool specimen...
###### Question:
8. A nurse is caring for a client who has a prescription for a stool specimen to be sent to the laboratory to be tested for ova and parasites. Which if the following instructions regarding specimen collection should th... | |
Finding the Orthogonal Projection from a Matrix where $a_{ij} = \vec v_i\cdot \vec v_j$
I am working on a problem that is asking to find $$\operatorname{proj}_Vv_3$$ where the matrix $$A=\begin{bmatrix} 3&5&11\\ 5&9&20\\ 11&20&49\end{bmatrix}$$ has entries $$a_{ij}=\vec v_i\cdot \vec v_j$$. I though that the simplest ... | |
## anonymous 5 years ago what is the derivative of ln(sqrt(x^2)) ? ? Thanks in advance!
1. M
1/x?
2. M
$\ln \sqrt{x ^{2}}$
3. M
is that what you mean?
4. anonymous
ln(sqrt(x^2)) = ln x (d/dx) ln x = 1/x right?
5. M
yes
6. anonymous
$(d / dx) \ln \sqrt{x^{2}}$
7. anonymous
so its ok to go ahead and cancel ... | |
# Short Term Analysis – November 1, 2006
GBPUSD
GBPUSD is in up trend and further rise towards 1.9142 (the day high of August 8) is still possible in the next couple of days, and a sideways consolidation is needed before breaking above 1.9142. Near term support is at the bottom of the price channel, a break below thi... | |
MathOverflow will be down for maintenance for approximately 3 hours, starting Monday evening (06/24/2013) at approximately 9:00 PM Eastern time (UTC-4).
## Is there a nice proof of the fact that there are (p-1)/24 supersingular elliptic curves in characteristic p?
If $k$ is a characteristic $p$ field containing a sub... | |
# Pressure Transmitter
A Pressure Transmitter is a device for measuring the pressure of gases or liquids . Pressure is an expression of the force required to stop a fluid from expanding, and is usually stated in terms of force per unit area. A pressure sensor usually acts as a transducer ; It generates a signal as a f... | |
Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Theoretical Developments
't Hooft model on the lattice
M. Garcia Perez, A. Gonzalez-Arroyo,* L. Keegan, M. Okawa
*corresponding author
Full text: pdf
Pre-published on: February 17, 2017
Published on: March 24, 2017
Abstract
Lattice... | |
# How can we Define our own Simple Environment for Source Code?
Inside of our document we wish to define a new environment for blocks of source code
\newenvironment{srcblock}%
% Define the environment
Later, we will use the environment:
\begin{srcblock} % use the environment
% source code here
\end{srcblock}
We ... | |
Subjects -> ASTRONOMY (Total: 94 journals)
Showing 1 - 46 of 46 Journals sorted alphabetically Advances in Astronomy (Followers: 51) Annual Review of Astronomy and Astrophysics (Followers: 39) Annual Review of Earth and Planetary Sciences (Followers: 63) Artificial Satellites (Followers: 23) As... | |
Development of a Quadrilateral Enhanced Assumed Strain Element for Efficient and Accurate Thermal Stress Analysis
Title & Authors
Development of a Quadrilateral Enhanced Assumed Strain Element for Efficient and Accurate Thermal Stress Analysis
Ko, Jin-Hwan; Lee, Byung-Chai;
Abstract
A new quadrilateral plane stress e... | |
# faces#
A quick way to generate an image with 2 opposing faces set to True, which is used throughout PoreSpy to indicate inlets and outlets
[1]:
import porespy as ps
import matplotlib.pyplot as plt
import numpy as np
import inspect
The arguments and default values of the function can be found as follows:
[2]:
i... | |
# PPO1¶
The Proximal Policy Optimization algorithm combines ideas from A2C (having multiple workers) and TRPO (it uses a trust region to improve the actor).
The main idea is that after an update, the new policy should be not too far from the old policy. For that, ppo uses clipping to avoid too large update.
Note
PP... | |
# Mac – Increase the maximum number of open file descriptors in Snow Leopard
file-descriptorsmacosx-snow-leopardulimit
I am trying to do something that requires a large number of file descriptors
sudo ulimit -n 12288 is as high as Snow Leopard wants to go; beyond this results in
/usr/bin/ulimit: line 4: ulimit: ope... | |
# Listing figure citations in order of appearance in the main bibliography list (other answers have not worked)
I think there might be something wrong with my code (as I am very new to Latex/overleaf). Note that I am using overleaf. I have seen this question other places too, but the answers are not working for me. Ca... | |
## 6.26 Morphisms of ringed spaces and modules
We have now introduced enough notation so that we are able to define the pullback and pushforward of modules along a morphism of ringed spaces.
Definition 6.26.1. Let $(f, f^\sharp ) : (X, \mathcal{O}_ X) \to (Y, \mathcal{O}_ Y)$ be a morphism of ringed spaces.
1. Let $... | |
# JustPaste.it - paste text and share with your friends
The quickest way to share text with other people - 5 million users around the world know about it
### Why is JustPaste.it so special?
Easy to use text editor with text formatting feature
Just paste text from another webpage or a word processor. The text formatt... | |
# Necessary and sufficient conditions for a polynomial $p$ to satisfy $\|x\|\to\infty\implies p(x)\to\infty$?
I'm looking for a necessary and sufficient conditions (I'm not even sure these exist) for a polynomial $p:\mathbb{R}^n\to\mathbb{R}$ to be "radially unbounded", that is
$$\|x\|\to\infty\implies p(x)\to\infty,... | |
# What is the general solution of the differential equation y'' + y = cot(x) ?
Oct 24, 2017
$A \cos x + B \sin x - \sin x \ln | \csc x + \cot x |$
#### Explanation:
We have:
$y ' ' + y = \cot \left(x\right)$ ..... [A]
This is a second order linear non-Homogeneous Differentiation Equation. The standard approach i... | |
## linear algebra – canonical form of the skew-symmetric bilinear function and its transformation matrix
Reduce the skew-symmetric bilinear function to canonical form and find the matrix of the transformation.
$$varphi (x, y) = x_1y_2-x_2y_1 + 2x_1y_3-2x_3y_1-x_1y_4 + x_4y_1 + 4x_2y_4-4x_4y_2 + x_3y_4-x_4y_3$$
My ap... | |
MathSciNet bibliographic data MR633661 (83j:10032) 10D24 (22E55) Jacquet, Hervé Dirichlet series for the group ${\rm GL}(n)$${\rm GL}(n)$. Automorphic forms, representation theory and arithmetic (Bombay, 1979), pp. 155–163, Tata Inst. Fund. Res. Studies in Math., 10, Tata Inst. Fundamental Res., Bombay, 1981. Links to ... | |
Abs¶
General¶
Abs operation performs element-wise the absolute value with given tensor, it applies following formula on every element of $$\src$$ tensor (the variable names follow the standard Naming Conventions):
$\begin{split}dst = \begin{cases} src & \text{if}\ src \ge 0 \\ -src & \text{if}\ src < 0 \end{cases}\e... | |
Is the Hessian almost everywhere nondegenerate? - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-25T03:48:21Z http://mathoverflow.net/feeds/question/63949 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/63949/is-the-hessian-almost-everywhere-nondegenerate Is the... | |
[德]奥利弗・罗伊1, [波]彼得・库里基2, 陈钰 译
1.拜罗伊特大学 哲学系, 拜罗伊特 95447
2.卢布林天主教大学 哲学系, 卢布林 20950
[作者简介] 1.奥利弗・罗伊(https://orcid.org/0000-0002-9085-5701),男,德国拜罗伊特大学哲学系教授,博士生导师,哲学博士,主要从事道义逻辑、认知逻辑、博弈论、集体意向性等方面的研究; 2.彼得・库里基(https://orcid.org/0000-0001-5413-3886),男,波兰卢布林天主教大学哲学系教授,博士生导师,哲学博士,主要从事道义逻辑、量子信息处理等方面的研究。陈钰(https://orcid.org/0000-0... | |
# [SOLVED]Region of Convergence
#### dwsmith
##### Well-known member
Consider the signal
$x(t) = e^{-5t}\mathcal{U}(t) + e^{-\beta t}\mathcal{U}(t)$
and denote the its Laplace transform by $$X(s)$$.
What are the constraints placed on the real and imagainary parts of $$\beta$$
if the region of convergence of $$X(s)$$ ... | |
The geometric multiplicity γ T (λ) of an eigenvalue λ is the dimension of the eigenspace associated with λ, i.e., the maximum number of linearly independent eigenvectors associated with that eigenvalue. Ie the eigenspace associated to eigenvalue λ j is $$E(\lambda_{j}) = {x \in V : Ax= \lambda_{j}v}$$ To dimension... | |
# Christoffel's symbols for a dual connection
Suppose that $\Gamma^{\beta}_{i\alpha}$ are Christoffel symbols for a connection with respct to a (local) basis $\{E_1,...,E_n\}$. I tried to prove that the Christoffel symbols for a dual connection with respect to the dual basis $\{\theta_1,...,\theta_n\}$ are then $-\Gam... | |
# Ac circuits
The ltc1966 is a true rms-to-dc converter that utilizes an innovative patented ds computational technique the internal delta-sigma circuitry of the ltc1966 makes it simpler to use, more accurate, lower power and dramatically more flexible than conventional log-antilog rms-to-dc converters. Transformers a... | |
How to build an electro-mechanical public key cipher machine?
It is generally assumed that asymmetric encryption schemes were invented in 1973 at GCHQ in Britain and, independently, in 1976 at the MIT.
Imagine, if the abstract idea of having a public key and a private key that can only decrypt what has been encrypted... | |
# Finding equation of line of the P-T graph for a gas dissociation reaction
Gas A (1 mol) dissociates in a closed rigid container of volume 0.16 lit as per following reaction.
$$\ce{2A (g) -> 3B (g) + 2C (g)}$$
If degree of dissociation of $\ce{A}$ is 0.4 and remains constant in entire range of temperature, then cor... | |
# MIRI’s July Newsletter: Fundraiser and New Papers
## Greetings from the Executive Director
Dear friends,
Another busy month! Since our last newsletter, we’ve published 3 new papers and 2 new “analysis” blog posts, we’ve significantly improved our website (especially the Research page), we’ve relocated to downtown ... | |
# Proving Gauge invariance of Schrodinger Equation
I am trying to proof explicitly that Schrodinger equation: $$i\hbar \partial_t \psi = \big[ -\frac{1}{2m}\big(\frac{\hbar}{i}\nabla-q\vec{A}\big)^2+qV \big]\psi$$
remains the same under the following gauge transformation:
$$\psi \rightarrow e^{iq\Lambda/\hbar} \psi$... | |
# Seminario di Analisi Algebrica e Complessa: “n-quasi-abelian categories”
## Giovedì 1 Dicembre 2016, ore 10:00 - Aula 2BC30 - Luisa Fiorot
ARGOMENTI: Seminari
Giovedì 1 Dicembre 2016 alle ore 10:00 in Aula 2BC30, Luisa Fiorot (Università di Padova) terrà una conferenza dal titolo “n-quasi-abelian categories”.
Abs... | |
### Newton’s Fractals – Generating Images from Roots
Fractals have always amazed me. Every time I see a fractal, I can get just as excited as the first time I saw the mandelbrot set. In this post, we’ll go through a method, which can generate beautiful structures from simple functions.
Link to the source code for thi... | |
# What packages will let me use Cyrillic characters in math mode?
Note I'm not actually planning on writing any, for instance, Russian prose or even any Russian words. It's just that, on paper, I've always had the habit of denoting sets by uppercase roman letters, sets of sets by script letters and, when the need aris... | |
## The Algebra of Data, and the Calculus of Mutation
Kalani Thielen's The Algebra of Data, and the Calculus of Mutation is a very good explanation of ADTs, and also scratches the surfaces of Zippers:
With the spreading popularity of languages like F# and Haskell, many people are encountering the concept of an algebra... | |
Masses for the three subatomic particles can be expressed in amu (atomic mass units) or grams. The number of neutrons in an element is the same for all neutral atoms of that element. 8. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. We use co... | |
United States Linear Algebra - Vector Equations
See Attachment for Question
See Attachment for Answer from back of book
I do not see how part a and part b are asking me two different things.
I interpret the first part of part a
"Is b in {a_1,a_2,a_3}?"
as
Is b a solution of the system represented by matrix A?
[1,0,-4... | |
# Mesh partitioner that assures non empty subdomain?
Does some of you know a mesh partitioner that assures non empty subdomains? For METIS, ParMETIS and Zoltan this is not the case.
• Could you be a bit more specific? What type of mesh are you partitioning? And what do you consider an empty subdomain? And how exactly... | |
## Friday, July 25, 2008
### matlab .m 3D Plot on a Spherical Surface
SPHERE3D plots 3D data on a spherical surface. Useful particularly in metrology of spherical surfaces, spherical wavefronts and wavefields.
SPHERE3D(Zin,theta_min,theta_max,phi_min,phi_max,Rho,meshscale)plots the 3D profile Zin as a mesh plot on a... | |
# Tag Info
9
The output looks fine to me. It is, however, relatively complicated. Consider the following simpler example Minimize[x (x - c), x] (* Out: {-c^2/4, {x -> c/2}} *) Thus, there is a minimum value of $y=-c^2/4$ at $x=c/2$, as expected. Now, let's complicate things slightly. Minimize[c x (x - c), x] This is ... |
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