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/- Copyright (c) 2014 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ prelude import Init.Core import Init.Control.Basic import Init.Coe namespace Option def toMonad [Monad m] [Alternative m] : Option α → m α | none =>...
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-- Check whether all intermediate steps during tactic execution -- can be successfully pretty-printed to trace output set_option trace.Elab.step true example : True := by skip trivial
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/- Copyright (c) 2022 Kexing Ying. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kexing Ying -/ import probability.martingale.borel_cantelli import probability.conditional_expectation import probability.independence /-! # The second Borel-Cantelli lemma This file c...
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/- Copyright (c) 2020 Fox Thomson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Fox Thomson -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.data.fintype.basic import Mathlib.computability.DFA import Mathlib.PostPort universes u v l na...
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/- Copyright (c) 2018 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Kenny Lau, Johan Commelin, Mario Carneiro -/ import algebra.big_operators import data.finset import tactic.subtype_instance variables {α : Type*} [monoid α] {s : set α...
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/- Copyright (c) 2018 Mario Carneiro. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.Lean3Lib.data.vector import Mathlib.data.list.nodup import Mathlib.data.list.of_fn import M...
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/- Copyright (c) 2021 Devon Tuma. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Devon Tuma -/ import analysis.asymptotics.asymptotics import analysis.normed.order.basic import data.polynomial.eval import topology.algebra.order.liminf_limsup /-! # Super-Polynomial Fun...
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/- Copyright (c) 2018 Ellen Arlt. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Ellen Arlt, Blair Shi, Sean Leather, Mario Carneiro, Johan Commelin Matrices -/ import algebra.module data.fintype algebra.pi_instances import data.set.enumerate import data.rat universe...
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import Init.Control.Option universe u v def OptionT2 (m : Type u → Type v) (α : Type u) : Type v := m (Option α) namespace OptionT2 variable {m : Type u → Type v} [Monad m] {α β : Type u} @[inline] protected def bind (ma : OptionT2 m α) (f : α → OptionT2 m β) : OptionT2 m β := (do { let a? ← ma; (match a? ...
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/- Copyright (c) 2016 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ prelude import init.meta.name init.meta.options init.meta.format init.meta.rb_map import init.meta.level init.meta.expr init.meta.environment init.meta.attr...
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/- Copyright (c) 2018 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Jeremy Avigad -/ import data.W /-! # Polynomial functors This file defines polynomial functors and the W-type construction as a polynomial functor. (For the M-type construction, see p...
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/- Copyright (c) 2014-15 Floris van Doorn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Floris van Doorn Partially ported from Coq HoTT Theorems about sigma-types (dependent sums) -/ import types.prod open eq sigma sigma.ops equiv is_equiv function is_trunc sum uni...
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import Euclid.tarski_6 open classical set namespace Euclidean_plane variables {point : Type} [Euclidean_plane point] local attribute [instance] prop_decidable theorem col_of_perp {a b p q : point} : p ≠ q → R a p q → R b p q → col p a b := λ h h1 h2, not_3dim (seven12b h) (seven5 p q).2 h1 h2 theorem coplanar {a : p...
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/- Copyright (c) 2019 Kenny Lau. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kenny Lau Ring-theoretic supplement of data.polynomial. Main result: Hilbert basis theorem, that if a ring is noetherian then so is its polynomial ring. -/ import algebra.char_p import da...
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/- Copyright (c) 2015 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura, Mario Carneiro In the standard library we cannot assume the univalence axiom. We say two types are equivalent if they are isomorphic. Two equivalent types h...
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/- Copyright (c) 2018 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Leonardo de Moura -/ prelude import Init.LeanInit import Init.Data.UInt import Init.Data.ToString import Init.Data.Hashable import Init.Data.RBMap import Init.Data.RBTree namesp...
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/- Copyright (c) 2019 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Scott Morrison, Markus Himmel -/ import category_theory.limits.shapes.zero /-! # Kernels and cokernels In a category with zero morphisms, the kernel of a morphism `f : X ⟶ Y` is the ...
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import tactic linear_algebra.basis mathlib_lemmas ring_theory.principal_ideal_domain torsion run_cmd tactic.skip open_locale classical variables (ι : Type*) (Rr : Type*) [integral_domain Rr] [decidable_eq Rr] [fintype ι] variables (l : ι →₀ Rr) /-- An R-module `P` is projective iff for all R-modules `A, B`...
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/- Copyright (c) 2018 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Scott Morrison -/ import data.fintype import category_theory.limits.limits import category_theory.limits.shapes.finite_limits import category_theory.sparse /-! # Pullbacks We define ...
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/- Copyright (c) 2020 Hanting Zhang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Hanting Zhang, Johan Commelin -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.tactic.default import Mathlib.data.mv_polynomial.rename import Mathlib.data.m...
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open smt_tactic lemma ex (p q : Prop) : p → q → p := by using_smt $ intros lemma ex2 (p q : Prop) : ¬ p → q → ¬ p := by using_smt $ intros lemma ex3 (p q : Prop) : p → (p ↔ q) → q := by using_smt $ intros lemma ex4 (p q : Prop) : p → (p → q) → q := by using_smt $ intros lemma ex5 (p q : Prop) : (p → q) → p → q := ...
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import Test import Local #eval twice myDouble 8 def main : IO Unit := IO.println (twice myDouble 6)
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/- Copyright (c) 2019 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Lean.Elab.InfoTree.Main namespace Lean private def getIOTypeArg : Expr → Option Expr | Expr.app (Expr.const `IO _) arg => some arg | _ ...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl -/ import algebra.big_operators.basic import data.nat.interval import tactic.linarith /-! # Results about big operators over intervals We prove results about big oper...
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/- Copyright (c) 2020 Kyle Miller. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kyle Miller -/ import algebra.hom.equiv import data.zmod.basic import tactic.group /-! # Racks and Quandles This file defines racks and quandles, algebraic structures for sets that bije...
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/- Copyright (c) 2018 Robert Y. Lewis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Robert Y. Lewis -/ import data.option.defs import data.list.defs /-! # rb_map This file defines additional operations on native rb_maps and rb_sets. These structures are defined in ...
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/- Copyright (c) 2022 Yaël Dillies. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Yaël Dillies -/ import order.hom.lattice /-! # Heyting algebra morphisms > THIS FILE IS SYNCHRONIZED WITH MATHLIB4. > Any changes to this file require a corresponding PR to mathlib4. ...
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/- Copyright (c) 2021 Wojciech Nawrocki. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Wojciech Nawrocki, Marc Huisinga -/ import Lean.DeclarationRange import Lean.Data.Json import Lean.Data.Lsp import Lean.Server.FileWorker.Utils import Lean.Server.Requests import...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Mario Carneiro, Kevin Buzzard, Yury Kudryashov -/ import algebra.module.submodule.basic import algebra.punit_instances /-! # The lattice structure on `submodule`s Thi...
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/- Copyright (c) 2021 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Lean.LazyInitExtension import Lean.Meta.Tactic.Cases import Lean.Meta.Tactic.Simp.Main namespace Lean.Meta namespace SplitIf builtin_initialize ext...
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/- In this example, we implement a tactic for "flattening" terms built using an associative operator. Suppose `op` is an associative operator. Then, we build a tactic that given a term such as (op (op a b) (op c d)) it returns a new term (op a (op b (op c d))) and a proof that it is equal to the given one. -/ ...
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/- Copyright (c) 2020 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Lean.Meta.Tactic.Simp.SimpLemmas import Lean.Meta.Tactic.Simp.Types import Lean.Meta.Tactic.Simp.Main import Lean.Meta.Tactic.Simp.Rewrite namespace...
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/- Copyright (c) 2020 Gihan Marasingha. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Gihan Marasingha -/ import .decision_nec import tactic.linarith /-! # Decision procedure - sufficient condition and decidability We give a sufficient condition for a string to be d...
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/- LoVe Exercise 9: Hoare Logic -/ import .love09_hoare_logic_demo namespace LoVe /- Question 1: Program Verification -/ section GAUSS /- The following WHILE program is intended to compute the Gaussian sum up to `n`, leaving the result in `r`. -/ def GAUSS : program := assign "r" (λs, 0) ;; while (λs, s "n" ≠ 0)...
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lemma mul_left_comm (a b c : mynat) : a * (b * c) = b * (a * c) := begin rw ← mul_assoc, rw mul_comm a, rw mul_assoc, refl, end
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/- Copyright (c) 2021 Anne Baanen. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Anne Baanen -/ import data.fin.tuple import data.real.basic import combinatorics.pigeonhole import algebra.order.euclidean_absolute_value /-! # Admissible absolute values This file defin...
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/- Copyright (c) 2020 Kyle Miller. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kyle Miller -/ import combinatorics.simple_graph.basic import algebra.big_operators.basic import data.nat.parity import data.zmod.parity /-! # Degree-sum formula and handshaking lemma T...
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import Lean open Lean open Lean.Meta instance : ToFormat InstanceEntry where format e := format e.val unsafe def tst1 : IO Unit := withImportModules [{module := `Lean}] {} 0 fun env => do let aux : MetaM Unit := do let insts ← getGlobalInstancesIndex IO.println (format insts) discard <| aux.run |>....
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/- Copyright (c) 2020 Adam Topaz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Adam Topaz. -/ import ring_theory.algebra import linear_algebra /-! # Tensor Algebras Given a commutative semiring `R`, and an `R`-module `M`, we construct the tensor algebra of `M`. Thi...
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/- Copyright (c) 2018 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Callum Sutton, Yury Kudryashov -/ import data.equiv.mul_add import algebra.field import algebra.opposites /-! # (Semi)ring equivs In this file we define extension of ...
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/- Copyright (c) 2018 Mario Carneiro and Kevin Buzzard. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro, Kevin Buzzard -/ import ring_theory.ideal_operations import linear_algebra.basis /-! # Noetherian rings and modules The following are equivalent for...
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import topology.category.Top.limits import topology.category.Top.epi_mono import topology.category.Top.open_nhds
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/- Copyright (c) 2015 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro -/ import data.list.perm /-! # Multisets These are implemented as the quotient of a list by permutations. ## Notation We define the global infix notation `::ₘ` f...
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universe variable u constant in_tail {α : Type u} {a b : α} {l : list α} : a ∈ l → a ∈ b::l constant in_head {α : Type u} {a : α} {l : list α} : a ∈ a::l constant in_left {α : Type u} {a : α} {l : list α} (r : list α) : a ∈ l → a ∈ l ++ r constant in_right {α : Type u} {a : α} (l : l...
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/- Copyright (c) 2018 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl -/ import tactic.basic import logic.relator /-! # Relation closures > THIS FILE IS SYNCHRONIZED WITH MATHLIB4. > https://github.com/leanprover-community/mathlib4/pull/...
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/- Copyright (c) 2018 Mario Carneiro. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro, Kenny Lau -/ import data.list.lattice import data.list.pairwise import data.list.forall2 /-! # Lists with no duplicates `list.nodup` is defined in `data/list/defs`. I...
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import pseudo_normed_group.category import rescale.basic noncomputable theory open_locale nnreal namespace rescale open pseudo_normed_group variables (r r' : ℝ≥0) (M : Type*) section pseudo_normed_group variables [pseudo_normed_group M] instance : pseudo_normed_group (rescale r M) := { filtration := λ c, show s...
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/- Copyright (c) 2018 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Scott Morrison -/ import data.fintype import category_theory.limits.limits import category_theory.sparse /-! # Pullbacks We define a category `walking_cospan` (resp. `walking_span`),...
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/- Copyright (c) 2018 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Scott Morrison, Johannes Hölzl, Reid Barton, Sean Leather -/ import category_theory.category /-! # Bundled types `bundled c` provides a uniform structure for bundling a type equipped...
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/- Copyright (c) 2020 Floris van Doorn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn -/ import tactic.interval_cases import algebra.big_operators.order import data.nat.multiplicity /-! # IMO 2019 Q4 > THIS FILE IS SYNCHRONIZED WITH MATHLIB4. > Any ...
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/- Copyright (c) 2020 Johan Commelin. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johan Commelin, Robert Y. Lewis -/ import data.matrix.notation import field_theory.mv_polynomial import field_theory.finite.polynomial import number_theory.basic import ring_theory.wi...
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@[user_attribute] meta def foo_attr : caching_user_attribute string := { name := `foo, descr := "bar", mk_cache := λ ns, return $ list.join ∘ list.map (list.append "\n" ∘ to_string) $ ns, dependencies := [] } attribute [foo] eq.refl eq.mp set_option trace.user_attributes_cache true run_cmd do s : string ← ...
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/- Copyright (c) 2018 Kenny Lau. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kenny Lau, Mario Carneiro -/ import group_theory.congruence import linear_algebra.bilinear_map /-! # Tensor product of modules over commutative semirings. This file constructs the tensor...
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/- Copyright (c) 2017 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Tim Baumann, Stephen Morgan, Scott Morrison, Floris van Doorn -/ import category_theory.functor_category import category_theory.isomorphism open category_theory universes v₁ v₂ v₃ v₄...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl Borel (measurable) space -- the smallest σ-algebra generated by open sets It would be nice to encode this in the topological space type class, i.e. each topological sp...
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/- Copyright (c) 2014 Floris van Doorn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn, Jeremy Avigad Subtraction on the natural numbers, as well as min, max, and distance. -/ import .order open eq.ops algebra eq namespace nat /- subtraction -/ pro...
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/- Copyright (c) 2018 Kenny Lau. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kenny Lau Algebra over Commutative Ring (under category) -/ import data.polynomial data.mv_polynomial import data.complex.basic import linear_algebra.tensor_product import ring_theory.sub...
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/- Copyright (c) 2021 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Lean.Elab.App /- Auxiliary elaboration functions: AKA custom elaborators -/ namespace Lean.Elab.Term open Meta @[builtinTermElab binrel] def elabB...
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import tactic open_locale classical -- BEGIN example (P Q : Prop) : (P → Q) ↔ ¬ P ∨ Q := sorry -- END
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import .src_09_or_elimination namespace mth1001 section applications_to_even_and_odd /- In this section, we'll show applications of the law of the excluded middle, contradiction, and contrapositive. -/ /- Here's a very short proof that `0 ≠ 1`, where `≠` is typed as `\ne`. The goal is closed using the `linarith` t...
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/- Copyright (c) 2022 Michail Karatarakis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Michail Karatarakis -/ import ring_theory.ideal.local_ring import ring_theory.valuation.valuation_subring /-! # Ramification groups > THIS FILE IS SYNCHRONIZED WITH MATHLIB4. > ...
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/- Copyright (c) 2015 Floris van Doorn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn Declaration of the coequalizer -/ import .quotient_functor types.equiv open quotient eq equiv equiv.ops is_trunc sigma sigma.ops namespace coeq section universe...
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/- Copyright (c) 2020 Joseph Myers. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro, Joseph Myers -/ import data.complex.exponential import analysis.special_functions.log.deriv /-! # Bounds on specific values of the exponential -/ namespace real open i...
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import folklore.measure_theory noncomputable theory open set real_axiom.extended_real namespace Birkhoff_G_ErgodicTheorem variables {X : Type} (σ : set (set X)) [sigma_algebra σ] (μ : set X → ℝ∞) [hms : measure_space σ μ] def measure_preserving (T : X → X) := ∀ s ∈ σ, μ (image T s) = μ s def {u} function...
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/- Copyright (c) 2016 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Leonardo de Moura -/ prelude import init.algebra.ordered_field universe u definition min {α : Type u} [decidable_linear_order α] (a b : α) : α := if a ≤ b then ...
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/- Copyright (c) 2021 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Lean.Elab.Tactic.Simp import Lean.Elab.Tactic.Conv.Basic import Lean.HeadIndex namespace Lean.Elab.Tactic.Conv open Meta private def getContext : M...
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/- Copyright (c) 2014 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Leonardo de Moura, Johannes Hölzl, Mario Carneiro -- QUESTION: can make the first argument in ∀ x ∈ a, ... implicit? -/ import logic.basic data.set.basic data.equiv.basi...
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/- Copyright (c) 2022 Sébastien Gouëzel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Sébastien Gouëzel -/ import analysis.analytic.linear import analysis.analytic.composition import analysis.normed_space.completion /-! # Uniqueness principle for analytic functions ...
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/- Copyright (c) 2015 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura, Jeremy Avigad, Mario Carneiro List permutations. -/ import data.list.basic namespace list universe variables uu vv variables {α : Type uu} {β : Type vv} /-...
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import category_theory.base import category_theory.colimits import category_theory.adjunction import data.bij_on open set universes v₁ v₂ u₁ u₂ namespace category_theory local notation f ` ∘ `:80 g:80 := g ≫ f variables {C : Type u₁} [category.{v₁} C] variables {D : Type u₂} [category.{v₂} D] class preserves_initi...
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/- Copyright (c) 2019 Reid Barton. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Reid Barton, Johan Commelin -/ import category_theory.adjunction.basic import category_theory.limits.preserves open opposite namespace category_theory.adjunction open category_theory op...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Mario Carneiro Finite sets. -/ import logic.function import data.nat.basic data.fintype data.set.lattice data.set.function open set lattice function universes u v w ...
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/- Copyright (c) 2021 Lu-Ming Zhang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Lu-Ming Zhang -/ import linear_algebra.matrix.symmetric import linear_algebra.matrix.orthogonal import data.matrix.kronecker /-! # Diagonal matrices This file contains the definition ...
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/- Copyright (c) 2020 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Lean.Parser.Term import Lean.Elab.Match import Lean.Elab.Tactic.Basic import Lean.Elab.Tactic.Induction namespace Lean.Elab.Tactic open Meta open T...
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/- Copyright (c) 2019 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl -/ import ring_theory.ideal.operations import linear_algebra.finsupp_vector_space import algebra.char_p.basic /-! # Multivariate polynomials over commutative rings Th...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Mario Carneiro Theory of Cauchy filters in uniform spaces. Complete uniform spaces. Totally bounded subsets. -/ import topology.uniform_space.basic topology.bases data...
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import game.world3.level5 -- hide import mynat.mul -- hide namespace mynat -- hide /- # Multiplication World ## Level 6: `succ_mul` We now begin our journey to `mul_comm`, the proof that `a * b = b * a`. We'll get there in level 8. Until we're there, it is frustrating but true that we cannot assume commutativity. W...
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/- Copyright (c) 2016 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura Auxiliary lemmas used to compare int numerals. -/ prelude import init.data.int.order namespace int /- Auxiliary lemmas for proving that to int numerals are d...
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/- Copyright (c) 2015 Nathaniel Thomas. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Nathaniel Thomas, Jeremy Avigad, Johannes Hölzl, Mario Carneiro -/ import algebra.big_operators.basic import algebra.group.hom import algebra.ring.basic import data.rat.cast import g...
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/- Copyright (c) 2019 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl Hahn decomposition theorem TODO: * introduce finite measures (into ℝ≥0) * show general for signed measures (into ℝ) -/ import measure_theory.measure_space open set fi...
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/- Copyright (c) 2019 Johan Commelin. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johan Commelin, Floris van Doorn -/ import algebra.module.basic import data.set.finite /-! # Pointwise addition, multiplication, and scalar multiplication of sets. This file defines ...
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# # Automatically generated file; DO NOT EDIT. # OpenWrt Configuration # CONFIG_MODULES=y CONFIG_HAVE_DOT_CONFIG=y # CONFIG_TARGET_sunxi is not set # CONFIG_TARGET_apm821xx is not set # CONFIG_TARGET_ath25 is not set CONFIG_TARGET_ar71xx=y # CONFIG_TARGET_ath79 is not set # CONFIG_TARGET_bcm27xx is not set # CONFIG_T...
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/- Copyright © 2020 Nicolò Cavalleri. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Nicolò Cavalleri. -/ import .preamble_results noncomputable theory /-! # Lie groups We define product manifolds and prove smoothness of the classical maps associated with products. ...
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-- DO NOT EDIT, automatically generated file, generator scripts/gen_constants_cpp.py import smt system.io open tactic meta def script_check_id (n : name) : tactic unit := do env ← get_env, (env^.get n >> return ()) <|> (guard $ env^.is_namespace n) <|> (attribute.get_instances n >> return ()) <|> fail ("identifier '" +...
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/- Copyright (c) 2022 Eric Wieser. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Eric Wieser -/ import group_theory.group_action.group import group_theory.group_action.pi /-! # Group actions on embeddings This file provides a `mul_action G (α ↪ β)` instance that agr...
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import .nat_sub namespace hidden namespace mynat -- TODO: generalise this to relevant types and relations def max (a b : mynat) : mynat := if a ≤ b then b else a def min (a b : mynat) : mynat := if a ≤ b then b else a variables {a b c : mynat} theorem le_imp_max2 (h : a ≤ b) : max a b = b := if_pos h theorem le_im...
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/- Copyright (c) 2020 Anne Baanen. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Anne Baanen The `simp_rw` tactic, a mix of `simp` and `rewrite`. -/ import tactic.core /-! # The `simp_rw` tactic This module defines a tactic `simp_rw` which functions as a mix of `si...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Mario Carneiro, Yury Kudryashov -/ import topology.continuous_on import data.finset.order /-! # Properties of subsets of topological spaces ## Main definitions `comp...
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-- Many many thanks to Rob Lewis for supplying 99.9% of this file. import tactic.modded tactic.apply open tactic meta def copy_decl (d : declaration) : tactic unit := add_decl $ d.update_name $ d.to_name.update_prefix `less_leaky.interactive @[reducible] meta def filter (d : declaration) : bool := d.to_name ∉ [`tac...
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/- Copyright (c) 2014 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Jeremy Avigad, Andrew Zipperer, Haitao Zhang, Minchao Wu, Yury Kudryashov -/ import data.set.basic import logic.function.conjugate /-! # Functions over sets ## Main definitions ### Pr...
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/- Copyright (c) 2015, 2017 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Robert Y. Lewis, Johannes Hölzl, Mario Carneiro, Sébastien Gouëzel -/ import topology.metric_space.emetric_space import topology.shrinking_lemma import topology.al...
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/- Copyright (c) 2015 Ulrik Buchholtz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Ulrik Buchholtz -/ import types.trunc types.eq types.arrow_2 types.fiber .susp open eq is_trunc is_equiv nat equiv trunc function fiber funext namespace homotopy definition is_co...
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import lib.table import data.rat.basic import tactic.rewrite_search.discovery.common import .common import .hook universes u v open tactic namespace tactic.rewrite_search def dnum : Type := ℕ namespace dnum @[inline] instance : has_zero dnum := nat.has_zero @[inline] instance : has_one dnum := nat.has_one @[inli...
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/- Copyright (c) 2021 Patrick Massot. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Patrick Massot -/ import measure_theory.integral.set_integral import analysis.calculus.mean_value /-! # Derivatives of integrals depending on parameters A parametric integral is a fu...
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/- Copyright (c) 2020 Bhavik Mehta. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Bhavik Mehta -/ import category_theory.natural_isomorphism import category_theory.full_subcategory /-! # Essential image of a functor The essential image `ess_image` of a functor consi...
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import algebra.group.type_tags algebra.group.is_unit /-! # Unbundled monoid and group homomorphisms (deprecated) This file defines typeclasses for unbundled monoid and group homomorphisms. Though these classes are deprecated, they are still widely used in mathlib, and probably will not go away before Lean 4 because L...
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import logic open eq definition subsets (P : Type) := P → Prop. context hypothesis A : Type. hypothesis r : A → subsets A. hypothesis i : subsets A → A. hypothesis retract {P : subsets A} {a : A} : r (i P) a = P a. definition delta (a:A) : Prop := ¬ (r a a). notation `δ` := delta. theorem delta_aux : ¬ (δ (i de...