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section parameter big_type : Type 1 parameter x : big_type parameter f {A : Type} : A → bool def foo : bool := f x end
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/- Copyright (c) 2019 Sébastien Gouëzel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Sébastien Gouëzel -/ import data.bundle import topology.algebra.order.field import topology.local_homeomorph /-! # Trivializations ## Main definitions ### Basic definitions * `t...
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precedence `+` : 65 precedence `*` : 75 precedence `=` : 50 precedence `≃` : 50 variable N : Type.{1} variable a : N variable b : N variable add : N → N → N variable mul : N → N → N namespace foo infixl + := add infixl * := mul check a+b*a end -- Notation is not avaiable outside the namespace check a+b*a namespac...
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set_option trace.compiler.ir.init true def f (as bs cs : List Nat) : List Nat := as ++ bs ++ cs
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Mario Carneiro -/ import set_theory.cardinal import tactic.omega /-! # Ordinal arithmetic Ordinals are defined as equivalences of well-ordered sets by order isomorphism. -/ noncomput...
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axiom f (x : Prop) : Prop axiom g0 (x : Prop) : Prop axiom g1 (x : Prop) : Prop axiom g2 (x : Prop) : Prop axiom g3 (x : Prop) : Prop axiom g4 (x : Prop) : Prop axiom g5 (x : Prop) : Prop axiom g6 (x : Prop) : Prop axiom g7 (x : Prop) : Prop axiom g8 (x : Prop) : Prop axiom g9 (x : Prop) : Prop axiom g10 (x : Prop) : P...
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/- Copyright (c) 2017 Mario Carneiro. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro Computational realization of topological spaces (experimental). -/ import analysis.topology.topological_space data.analysis.filter open set open filter (hiding realizer...
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def subject := "world"
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/- Copyright (c) 2020 Marc Huisinga. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Marc Huisinga -/ import Lean.Data.Lsp namespace Lean namespace Lsp class FileSource (α : Type) where fileSource : α → DocumentUri export FileSource (fileSource) instance Location....
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#exit import Structure.Generic.Axioms import Structure.Generic.DerivedFunctors import mathlib4_experiments.Data.Equiv.Basic open GeneralizedRelation set_option autoBoundImplicitLocal false universes u v w namespace GeneralizedProperty def ConstProp (α : Sort u) {V : Universe} {β : V} (c : β) : GeneralizedP...
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import system.io import data.vector import data.zmod.basic import utils open io open list def tree_p : char → option bool | '#' := some true | '.' := some false | _ := none def WIDTH : ℕ := 31 def tree_line := vector bool WIDTH def parse_line : string → option tree_line | s := do let mapped : list (op...
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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 -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.logic import Mathlib.Lean3Lib.init.control.monad import Mathlib.Lean3Lib.init.control.alternative unive...
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/- Copyright (c) 2014 Floris van Doorn (c) 2016 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn, Leonardo de Moura, Jeremy Avigad, Mario Carneiro -/ import algebra.order.ring.canonical import data.nat.basic /-! # The natural numb...
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/- Copyright (c) 2018 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Scott Morrison Case bashing: * on `x ∈ A`, for `A : finset α` or `A : list α`, or * on `x : A`, with `[fintype A]`. -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default impor...
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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 -/ import data.nat.sqrt import data.set.lattice /-! # Naturals pairing function This file defines a pairing function for the naturals as fol...
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import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.ring_theory.polynomial.basic import Mathlib.PostPort namespace Mathlib
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import system.io open io def main : io unit := do { l ← get_line, if l = "hello" then put_str "you have typed hello\n" else do {put_str "you did not type hello\n", put_str "-----------\n"} }
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structure Point (α : Type) := mk :: (x : α) (y : α) --#check Point --#check @Point.rec_on --#check @Point.x --#check @Point.y --#print prefix Point --#reduce Point.x (Point.mk 10 20) --#reduce Point.y (Point.mk 10 20) open Point example (α : Type) (a b : α) : x (mk a b) = a := rfl example (α : Type) (a b : α) : x ...
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/- Copyright (c) 2022 Riccardo Brasca. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Riccardo Brasca -/ import algebra.gcd_monoid.finset import algebra.gcd_monoid.basic import ring_theory.int.basic import ring_theory.polynomial.content /-! # Basic results about setwi...
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class NonUnitalNonAssocSemiring (α : Type u) class NonUnitalSemiring (α : Type u) extends NonUnitalNonAssocSemiring α class Semiring (α : Type u) extends NonUnitalSemiring α class NonUnitalCommSemiring (α : Type u) extends NonUnitalSemiring α class CommSemiring (R : Type u) extends Semiring R class NonUnitalNonAss...
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/- Copyright (c) 2020 Oliver Nash. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Oliver Nash -/ import algebra.invertible import algebra.lie.skew_adjoint import algebra.lie.abelian import linear_algebra.matrix.trace import linear_algebra.matrix.transvection import dat...
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example (P Q R : Type) : (P → (Q → R)) → ((P → Q) → (P → R)) := begin intro f, intro g, intro p, apply f, { exact p, }, { apply g, exact p, } end
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/- Copyright (c) 2021 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Dany Fabian -/ namespace Lean namespace Parsec inductive ParseResult (α : Type) where | success (pos : String.Iterator) (res : α) | error (pos : String.Iterator) (err : St...
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import tidy.tidy import tactic.tcache import category_theory.natural_isomorphism import category_theory.products import category_theory.types import category_theory.fully_faithful import category_theory.yoneda import category_theory.limits.cones import category_theory.equivalence open category_theory suggestion cate...
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import category_theory.base import category_theory.replete open category_theory open category_theory.category local notation f ` ∘ `:80 g:80 := g ≫ f universes v u namespace homotopy_theory.weak_equivalences class has_weak_equivalences (C : Type u) [category C] := (is_weq : Π ⦃a b : C⦄, (a ⟶ b) → Prop) def is_weq ...
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lemma contrapositive2 (P Q : Prop) : (¬ Q → ¬ P) → (P → Q) := begin end
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def bufSize : Nat := 25 def isPairSum (xs : List Nat) (y : Nat) : Bool := do for x₁ in xs do for x₂ in xs do if x₁ ≠ x₂ && x₁ + x₂ == y then return true return false def firstBad (xs : List Nat) : Nat := do let mut old := xs.take bufSize for x in xs.drop bufSize do if ! isPairSum old x then return x old := ...
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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 Multiplication of submodules of an algebra. -/ import ring_theory.algebra ring_theory.noetherian universes u v open lattice submodule namespace algebra variables {R : Type u...
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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.Parser.Command import Lean.ResolveName import Lean.Meta.Reduce import Lean.Elab.Log import Lean.Elab.Term import Lean.Elab.Binders import Lean.E...
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/- Copyright (c) 2022 Stuart Presnell. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Stuart Presnell, Eric Wieser, Yaël Dillies, Patrick Massot, Scott Morrison -/ import algebra.group_power.order import algebra.ring.regular /-! # Algebraic instances for unit interval...
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/- Copyright (c) 2021 Joseph Myers. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joseph Myers -/ import linear_algebra.ray import linear_algebra.determinant /-! # Orientations of modules This file defines orientations of modules. ## Main definitions * `orientatio...
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/- Copyright (c) 2018 Chris Hughes. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Chris Hughes, Abhimanyu Pallavi Sudhir, Jean Lo, Calle Sönne, Benjamin Davidson -/ import analysis.special_functions.trigonometric.arctan import analysis.special_functions.trigonometric....
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import classes.unrestricted.basics.lifting import classes.unrestricted.closure_properties.concatenation import utilities.written_by_others.trim_assoc -- new nonterminal type private def nn (N : Type) : Type := N ⊕ fin 3 -- new symbol type private def ns (T N : Type) : Type := symbol T (nn N) variables {T : Type} ...
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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.Binders import Lean.Elab.SyntheticMVars namespace Lean.Elab.Command structure Scope where header : String opts : Opti...
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[ { "key": "chicken", "title": "Chicken", "spelling": "/'tʃikin/", "subs": [ { "key": "chicken1", "title": "This is the chicken", "spelling": "" } ] }, { "key": "duck", "title": "Duck", "spelling": "/dʌk/", "subs": [ { "key": "d...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Mario Carneiro Ordinal arithmetic. Ordinals are defined as equivalences of well-ordered sets by order isomorphism. -/ import order.order_iso set_theory.cardinal data.sum noncomputable...
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/- Copyright (c) 2018 Reid Barton. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Reid Barton, Scott Morrison -/ import category_theory.isomorphism import category_theory.functor_category import category_theory.opposites import tactic.reassoc_axiom universes v v' u u'...
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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 -/ import topology.uniform_space.basic import topology.bases import data.set.intervals /-! # Theory of Cauchy filters in uniform spaces. Complete uniform...
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/- page 43 -/ import standard open classical variable p : Prop -- BEGIN example (H : ¬¬p) : p := by_cases (assume H1 : p, H1) (assume H1 : ¬p, absurd H1 H) -- END
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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 -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.data.polynomial.ring_division import Mathlib.data.mv_polynomial.rename import Mathlib.ring_...
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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 -/ import algebra.category.CommRing.basic import ring_theory.subring import algebra.ring.pi /-! # The category of commutative rings has all limits Further, these limit...
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import algebra.ring algebra.group_power data.zmod.basic data.nat.prime import data.finset algebra.big_operators import tactic.ring tactic.linarith namespace MAS114 namespace exercises_1 namespace Q21 def u (n : ℕ) : ℕ := 2 ^ n def a (n : ℕ) : ℕ := 2 ^ (u n) + 1 lemma u_ge_1 (n : ℕ) : u n ≥ 1 := by { let e := @na...
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/- Copyright (c) 2018 Chris Hughes. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Chris Hughes, Abhimanyu Pallavi Sudhir, Jean Lo, Calle Sönne -/ import analysis.calculus.inverse import analysis.complex.real_deriv import data.complex.exponential /-! # Complex and rea...
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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 group_theory.group_action.group import algebra.s...
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/- Copyright (c) 2020 Oliver Nash. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Scott Morrison, Oliver Nash -/ import tactic.abel namespace tactic namespace interactive /-- A tactic for simplifying identities in not-necessarily-commutative rings. An example: ```le...
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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, Yury Kudryashov -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.category_theory.concrete_category.basic import Mathlib.category_theory.con...
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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 -/ import Mathlib.Data.Nat.Basic import Mathlib.Init.Dvd /-! # Definitions and properties of `gcd`, `lcm`, and `coprime` -/ namespace Nat --- TODO a...
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namespace ex1 def f : ℕ → ℕ | n := (match n with | 0 := 0 | (m+1) := f m end) + 1 def g : ℕ → ℕ | n := (match n, rfl : ∀ m, m = n → ℕ with | 0, h := 0 | (m+1), h := have m < n, begin rw [←h], apply nat.lt_succ_self end, g m end) + 1 end ex1 namespace ex2 mutual def f, g with f : ℕ → ℕ ...
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/- Copyright (c) 2019 Simon Hudon. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Simon Hudon -/ import tactic.monotonicity.basic import data.set.lattice import order.bounds variables {α : Type*} @[mono] lemma mul_mono_nonneg {x y z : α} [ordered_semiring α] (h' : 0...
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/- Copyright (c) 2020 Zhouhang Zhou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Zhouhang Zhou -/ import data.set.intervals.basic order.bounds /-! # Intervals without endpoints ordering In any decidable linear order `α`, we define the set of elements lying betwee...
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/- Copyright (c) 2019 Chris Hughes All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Chris Hughes -/ import data.polynomial topology.algebra.polynomial analysis.complex.exponential open complex polynomial metric filter is_absolute_value set lattice namespace complex le...
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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 Chris Hughes. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Chris Hughes, Abhimanyu Pallavi Sudhir, Jean Lo, Calle Sönne -/ import analysis.complex.basic import data.complex.exponential import analysis.asymptotics.theta /-! # Complex and real ex...
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/- Copyright (c) 2020 Sébastien Gouëzel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Sébastien Gouëzel, Floris van Doorn -/ import geometry.manifold.mfderiv import geometry.manifold.cont_mdiff_map /-! ### Interactions between differentiability, smoothness and manif...
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/- Copyright (c) 2020 Frédéric Dupuis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Frédéric Dupuis -/ import data.real.sqrt import field_theory.tower import analysis.normed_space.finite_dimension import analysis.normed_space.star.basic /-! # `is_R_or_C`: a typeclas...
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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, Yury Kudryashov -/ import data.list.pairwise import logic.relation universes u v open nat variables {α : Type u} {β : Type v} namespace list /- chain re...
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/- Copyright (c) 2018 Mario Carneiro. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Mario Carneiro Topology of the complex numbers. -/ import data.complex.basic topology.metric_space.basic topology.instances.real noncomputable theory open filter metric namespace com...
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def sum.left {a b} : a ⊕ b → option a | (sum.inl a) := option.some a | (sum.inr b) := option.none def sum.right {a b} : a ⊕ b → option b | (sum.inl a) := option.none | (sum.inr b) := option.some b def sum.fmap {c a b} : (a → b) → c ⊕ a → c ⊕ b | f (sum.inl e) := sum.inl e | f (sum.inr v) := sum.inr (f v) def sum.bin...
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/- Copyright (c) 2020 Simon Hudon. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Simon Hudon -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.testing.slim_check.testable import Mathlib.testing.slim_check.functions import Mathlib.data.list.s...
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open tactic axiom Sorry : ∀ A : Type, A inductive Enum : Type | ea | eb | ec | ed attribute [instance] noncomputable definition Enum_dec_eq : decidable_eq Enum := by do a ← intro `a, cases a, b ← intro `b, cases b, right >> reflexivity, try (do left, h ← intro `H, cases h), repeat $ intros >> ...
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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, Chris Hughes -/ import data.fintype.card import data.polynomial import group_theory.order_of_element import algebra.geom_sum /-! # Integral domains -/ section open ...
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/- Copyright (c) 2017 Mario Carneiro. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro, Simon Hudon, Sebastien Gouezel, Scott Morrison -/ import tactic.lint open lean open lean.parser local postfix `?`:9001 := optional local postfix *:9001 := many name...
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/- Copyright (c) 2019 Mario Carneiro. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Reid Barton, Mario Carneiro, Isabel Longbottom, Scott Morrison -/ import set_theory.pgame /-! # Combinatorial games. In this file we define the quotient of pre-games by the equivalen...
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/- Copyright (c) 2020 Aaron Anderson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Aaron Anderson -/ import data.polynomial.degree.definitions /-! # Cancel the leading terms of two polynomials ## Definition * `cancel_leads p q`: the polynomial formed by multiplyin...
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lemma test (h : true) : true → true := λ h, trivial lemma test' (h : 0 = 0) : true → true := λ h, trivial meta def mk_test : tactic unit := do e ← tactic.to_expr ``(test trivial), tactic.to_expr ``(%%e trivial) >>= tactic.exact meta def mk_test' : tactic unit := do e ← tactic.to_expr ``(test' rfl), tactic.to...
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/- Copyright (c) 2017 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.propext import Mathlib.Lean3Lib.init.classical universes u namespace Mathlib /- Lemmas use by the ...
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/- Copyright (c) 2020 Robert Y. Lewis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Robert Y. Lewis -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.meta.rb_map import Mathlib.tactic.ring import Mathlib.tactic.linarith.lemmas import Mathl...
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/- Copyright (c) 2020 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Scott Morrison -/ import ring_theory.matrix_algebra import data.polynomial.algebra_map import data.matrix.basis import data.matrix.dmatrix /-! # Algebra isomorphism between matrices o...
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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 -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.meta.interactive_base import Mathlib.Lean3Lib.init.function namespace Mathlib namespace tactic /-- A...
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/- Copyright (c) 2018 Jan-David Salchow. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jan-David Salchow, Patrick Massot -/ import topology.subset_properties import topology.metric_space.basic /-! # Sequences in topological spaces In this file we define sequences in...
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inductive vec (A : Type) : nat → Type | nil {} : vec nat.zero | cons : ∀ {n}, A → vec n → vec (nat.succ n) open vec definition boo (n : nat) (v : vec bool n) : vec bool n := match n, v : ∀ (n : _), vec bool n → _ with | 0, nil := nil | n+1, cons a v := cons (bool.bnot a) v end
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/- Copyright (c) 2022 Ivan Sadofschi Costa. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Ivan Sadofschi Costa -/ import topology.order import topology.sets.opens import topology.continuous_function.basic /-! # Any T0 space embeds in a product of copies of the Sierpi...
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import meta.expr meta.rb_map namespace tactic private meta def transport_with_prefix_fun_aux (f : name → option name) (pre tgt_pre : name) (attrs : list name) : name → command := λ src, do let tgt := src.map_prefix (λ n, if n = pre then some tgt_pre else none), (get_decl tgt >> skip) <|> do decl ← get_d...
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import normalizer open polya constants a b c u v w z y x: ℚ private meta def test_on (e : expr) := (do t ← expr.to_term e, st ← term.canonize t, tactic.trace st ) run_cmd test_on `(1*a + 3*(b + c) + 5*b) run_cmd test_on `((1*u + (2* (1* v ^ 2 + 23*1) ^ 3) + 1*z) ^ 3)
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/- Copyright (c) 2021 Gabriel Ebner. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Gabriel Ebner -/ import Lean open Lean Elab private def setOption [Monad m] [MonadError m] (name val : Syntax) (opts : Options) : m Options := do let val ← match val with | ...
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/- Copyright (c) 2019 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Leonardo de Moura -/ namespace Std universes u v w def HashSetBucket (α : Type u) := { b : Array (List α) // b.size > 0 } def HashSetBucket.update {α : Type u} (data : HashSe...
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/- The problem is originally presented in: A. Pease, G. Sutcliffe, N. Siegel, and S. Trac, “Large Theory Reasoning with SUMO at CASC,” pp. 1–8, Jul. 2009. Here we present the natural deduction proof in Lean. -/ import bs_test -- some initial tests lemma VertebrateAnimal : ∀ (x : U), ins x Vertebrate → ins x Animal :...
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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: Scott Morrison import category_theory.category import category_theory.graphs open category_theory open category_theory.graphs namespace category_theory.examples.graphs univer...
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/- Copyright (c) 2022 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ import category_theory.idempotents.basic import category_theory.preadditive.additive_functor import category_theory.equivalence /-! # The Karoubi envelope of a category In t...
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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: Joseph Myers -/ import linear_algebra.affine_space.independent import linear_algebra.finite_dimensional /-! # Finite-dimensional subspaces of affine spaces. This file provides a few re...
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/- Copyright (c) 2015 Joe Hendrix. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joe Hendrix, Sebastian Ullrich Basic operations on bitvectors. This is a work-in-progress, and contains additions to other theories. -/ import data.vector @[reducible] def bitvec (n : ...
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import tactic.lift import data.set.basic import data.int.basic /-! Some tests of the `lift` tactic. -/ example (n m k x z u : ℤ) (hn : 0 < n) (hk : 0 ≤ k + n) (hu : 0 ≤ u) (h : k + n = 2 + x) (f : false) : k + n = m + x := begin lift n to ℕ using le_of_lt hn, guard_target (k + ↑n = m + x), guard_hyp hn : (0...
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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 -/ import ring_theory.polynomial.symmetric /-! # Vieta's Formula The main result is `vieta.prod_X_add_C_eq_sum_esymm`, which shows that the product of linear terms `λ + ...
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def diag : Bool → Bool → Bool → Nat | b, true, false => 1 | false, b, true => 2 | true, false, b => 3 | b1, b2, b3 => arbitrary Nat theorem diag1 (a : Bool) : diag a true false = 1 := match a with | true => rfl | false => rfl theorem diag2 (a : Bool) : diag false a true = 2 := by cases a; exact rfl; exact rfl ...
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open nat inductive vec (A : Type) : nat → Type := nil {} : vec A zero, cons : Π {n}, A → vec A n → vec A (succ n) namespace vec variables {A B C : Type} variables {n m : nat} notation a :: b := cons a b protected definition destruct (v : vec A (succ n)) {P : Π {n : nat}, vec A (succ n) → Type} ...
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/- Copyright (c) 2020 Eric Wieser. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Simon Hudon, Patrick Massot, Eric Wieser -/ import tactic.split_ifs import tactic.simpa import tactic.congr import algebra.group.to_additive /-! # Instances and theorems on pi types This...
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import init.lean.parser.term open Lean open Lean.Parser def testParser (input : String) : IO Unit := do env ← mkEmptyEnvironment; termPTables ← builtinTermParsingTable.get; stx ← IO.ofExcept $ runParser env termPTables input "<input>" "expr"; IO.println stx def test (is : List String) : IO Unit := is.mfor $ fun input...
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/- Copyright (c) 2021 Tianchen Zhao. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Tianchen Zhao -/ import order.sidedness /-! # Ray and angle This file defines rays and angles using `same_side_pt` and insidedness of an angle, and then proves some important theorems...
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/- Copyright (c) 2020 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ import category_theory.limits.constructions.pullbacks import category_theory.limits.shapes.biproducts import category_theory.limits.shapes.images import category_theor...
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-- TABLEAU-EXAMPLES import syntax import tableau lemma noBot : provable (~ ⊥) := begin apply provable.byTableau, apply closedTableau.loc, swap 2, { apply localTableau.byLocalRule (localRule.neg (finset.mem_singleton.mpr (refl (~~⊥)))), intros β inB, rw finset.sdiff_self at inB, rw finset.empty...
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/- Copyright (c) 2020 Bhavik Mehta. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Bhavik Mehta -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.category_theory.adjunction.basic import Mathlib.category_theory.conj import Mathlib.category_the...
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/- Copyright (c) 2017 Mario Carneiro. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro -/ import data.rat import data.semiquot /-! # Implementation of floating-point numbers (experimental). -/ def int.shift2 (a b : ℕ) : ℤ → ℕ × ℕ | (int.of_nat e) := (a.sh...
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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.AppBuilder import Lean.Meta.Tactic.Induction import Lean.Meta.Tactic.Injection import Lean.Meta.Tactic.Assert import Lean.Meta.Tactic.Subst...
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import game.modify.basic game.value open game open list /-- the values of two games, that differ in exactly one component by at most d d, differ by at most d-/ theorem MITM (G1 G2 : game 2) (d : ℤ) (p : game.modify G1 G2 d): abs(G1.value - G2.value) ≤ d := begin revert G1, revert G2, -- induction on size of...
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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.equalizers import category_theory.limits.shapes.strong_epi /-! # Categorical images We define the categorical im...
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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.Compiler.IR.Basic import Lean.Compiler.IR.LiveVars import Lean.Compiler.IR.Format namespace Lean.IR.ResetReuse /- Remark: the insertResetReuse ...
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/- Copyright (c) 2021 Yury Kudryashov. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Yury Kudryashov, Mario Carneiro, Sean Leather -/ import data.finset.card import order.hom.basic /-! # Finite sets in `option α` In this file we define * `option.to_finset`: constru...
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import ..monoidal_category import categories.types open categories open categories.monoidal_category universes u₁ v₁ class enriched_category (C : Type u₁) extends category.{u₁ v₁} C := (V : Type (v₁+1)) [𝒱 : monoidal_category V] (F : V ↝ (Type v₁)) -- needs to be a monoidal functor (enriched_hom : C → C → V...
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local attribute [instance, priority 0] classical.prop_decidable open tactic run_cmd do (p,_) ← has_attribute `instance ``nat.monoid, guard p, (p,_) ← has_attribute `instance ``classical.prop_decidable, guard (¬ p), skip
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import theories.analysis.real_limit import standard namespace ak_compat open classical nat real analysis /- These are definition from an old version of lean2. We reintroduce them here to fix a regression. -/ noncomputable definition converges_to_seq (X : ℕ → ℝ) (y : ℝ) : Prop := ∀ ⦃ε : ℝ⦄, ε > 0 → ∃ ⦃N : ℕ⦄, ∀ ...