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import .macros .algebra open classical constant real : Type notation `ℝ` := real constant real_field : discrete_linear_ordered_field ℝ noncomputable instance : discrete_linear_ordered_field real := real_field noncomputable instance : decidable_linear_ordered_comm_group real := { decidable_le := λ x y, prop_decid...
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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 algebra.category.Mon.basic import algebra.group.pi import category_theory.limits.creates import category_theory.limits.types import group_theory.submonoid.oper...
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import classes.unrestricted.basics.toolbox import utilities.list_utils section functions_lift_sink variables {T N₀ N : Type} def lift_symbol_ (lift_N : N₀ → N) : symbol T N₀ → symbol T N | (symbol.terminal t) := symbol.terminal t | (symbol.nonterminal n) := symbol.nonterminal (lift_N n) def sink_symbol_ (sink_N...
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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, Jens Wagemaker, Aaron Anderson -/ import ring_theory.coprime.basic import ring_theory.unique_factorization_domain /-! # Divisibility over ℕ and ℤ This file collects r...
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import tactic.basic /-- Tag lemmas of the form: ``` lemma my_collection.ext (a b : my_collection) (h : ∀ x, a.lookup x = b.lookup y) : a = b := ... ``` -/ @[user_attribute] meta def extensional_attribute : user_attribute := { name := `extensionality, descr := "lemmas usable by `ext` tactic" } attribute...
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import data.multiset.antidiagonal import data.multiset.basic import data.multiset.erase_dup import data.multiset.finset_ops import data.multiset.fold import data.multiset.functor import data.multiset.lattice import data.multiset.locally_finite import data.multiset.nat_antidiagonal import data.multiset.nodup import data...
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import algebra.function open bool nat open function inductive univ := | ubool : univ | unat : univ | uarrow : univ → univ → univ open univ definition interp : univ → Type₁ | ubool := bool | unat := nat | (uarrow fr to) := interp fr → interp to definition foo : Π (u : univ) (el : interp u), int...
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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.logic init.category.functor universe variables u v def set (α : Type u) := α → Prop def set_of {α : Type u} (p : α → Prop) : set α := ...
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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.RecursorInfo import Lean.Meta.SynthInstance import Lean.Meta.Tactic.Util import Lean.Meta.Tactic.Revert import Lean.Meta.Tactic.Intro impor...
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(* import("tactic.lua") *) theorem T1 (a b : Bool) : a → b → a /\ b. apply and_intro. exact. done.
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namespace boxed_adt inductive boxed (T : Type) : Type | box : T → boxed def unbox {T : Type} : boxed T → T | (boxed.box t) := t end boxed_adt
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import Imp open eq.ops nat bool namespace Equiv open Idn Idn.aexp Idn.bexp Idn.com Idn.ceval definition aequiv (a1 a2 : aexp) := ∀st, aeval st a1 = aeval st a2 definition bequiv (b1 b2 : bexp) := ∀st, beval st b1 = beval st b2 definition cequiv (c1 c2 : com) := ∀st st', (c1 / st ⇓ st') ↔ (c2 / st ⇓ st') -- Exercise...
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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, Bryan Gin-ge Chen -/ import order.bounded_lattice /-! # (Generalized) Boolean algebras A Boolean algebra is a bounded distributive lattice with a complement operator. ...
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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 data.rat import data.fintype import data.fintype.card /-! # Bernoulli numbers The Bernoulli numbers are a sequence of numbers that frequently show up in num...
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/- Copyright (c) 2017 Daniel Selsam. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Daniel Selsam Environments. -/ import data.hash_map library_dev.data.list.sort .tensor .id .util .reference namespace certigrad def pre_env : Type := hash_map reference (λ (ref : refe...
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variable C {A B : Type} (H : A = B) (a : A) : B variable D {A A' : Type} {B : A -> Type} {B' : A' -> Type} (H : (forall x : A, B x) = (forall x : A', B' x)) : A = A' variable R {A A' : Type} {B : A -> Type} {B' : A' -> Type} (H : (forall x : A, B x) = (forall x : A', B' x)) (a : A) : (B a) = (B' (C (D H)...
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-- the to be Mason-Stother formalization -- Authors Johannes & Jens --Defining the gcd import poly --import euclidean_domain --Need to fix an admit in UFD, for the ...multiset lemma import unique_factorization_domain import data.finsupp import algebraically_closed_field import poly_over_UFD import poly_over_field impo...
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/- Copyright (c) 2019 Rohan Mitta. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Rohan Mitta, Kevin Buzzard, Alistair Tucker, Johannes Hölzl, Yury Kudryashov -/ import analysis.specific_limits import data.setoid.basic import dynamics.fixed_points.topology /-! # Contr...
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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, Scott Morrison -/ import category_theory.adjunction.basic import category_theory.opposites import category_theory.groupoid /-! # Facts about epimorphisms and monomorphisms. ...
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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, Michael Stoll -/ import number_theory.legendre_symbol.gauss_eisenstein_lemmas import number_theory.legendre_symbol.quadratic_char /-! # Legendre symbol and quadratic recip...
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import Lean namespace Ex1 inductive Multiset (α: Type): Type def Finset (α : Type) := @Subtype (Multiset α) (λ _ => True) def Finset.insert (a : α): Finset α → Finset α := sorry def Finset.empty : Finset α := sorry structure Foo (G: Fin 0) (m: Nat) where n: Nat f: Fin m inductive Bar {G: Fin 0} : {m: Nat} → Fin...
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/- Lean also support E-matching: a heuristic lemma instantiation procedure that is available in many SMT solvers. Goals such as mk_mem_list can also be discharged using heuristic instantiation. -/ open list tactic universe variable u lemma in_tail {α : Type u} {a : α} (b : α) {l : list α} : a ∈ l → a ∈ ...
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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 number_theory.zsqrtd.basic import data.complex.basic import ring_theory.principal_ideal_domain import number_theory.legendre_symbol.quadratic_reciprocity /-! # Gau...
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/- Copyright (c) 2020 Kenny Lau. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kenny Lau -/ import data.finsupp.defs import algebra.big_operators.pi import algebra.big_operators.ring import algebra.big_operators.order import group_theory.submonoid.membership /-! # B...
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/- Copyright (c) 2016 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Leonardo de Moura -/ import tactic.doc_commands /-! # Basic logic properties This file is one of the earliest imports in mathlib. ## Implementation notes Theorems tha...
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import data.set.function variables {α β : Type*} variable f : α → β variables s t : set α -- BEGIN example : s ⊆ f ⁻¹' (f '' s) := begin intros x xs, show f x ∈ f '' s, use [x, xs] end -- END
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/- Copyright (c) 2016 Bruno Bentzen. All rights reserved. Released under the Apache License 2.0 (see "License"); Theorems and exercises of the HoTT book (Chapter 5) -/ import .ch2 .ch3 open eq prod unit bool sum sigma ua funext nat lift /- ************************************** -/ /- Ch.5 Induction ...
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/- Copyright (c) 2014 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Module: init.path Authors: Jeremy Avigad, Jakob von Raumer, Floris van Doorn Ported from Coq HoTT -/ prelude import .function .datatypes .relation .tactic open function eq /- Path e...
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/- Copyright (c) 2020 Yury Kudryashov. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Yury Kudryashov -/ import algebra.quaternion import analysis.inner_product_space.basic /-! # Quaternions as a normed algebra In this file we define the following structures on the s...
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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 /- Era...
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example : ∀ a b c d : Nat, a = b → a = d → a = c → c = b := by intros rename_i h1 _ h2 apply Eq.trans apply Eq.symm exact h2 exact h1
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/- Copyright (c) 2014 Robert Lewis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Robert Lewis, Leonardo de Moura, Mario Carneiro, Floris van Doorn -/ import algebra.field.basic import algebra.group_power.lemmas import algebra.group_power.order import algebra.order.ri...
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/- Copyright (c) 2020 Alexander Bentkamp. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Alexander Bentkamp. -/ import ring_theory.principal_ideal_domain import missing_mathlib.data.polynomial import missing_mathlib.data.multiset import missing_mathlib.data.finsupp imp...
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/- Copyright (c) 2019 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Johannes Hölzl Linear structures on function with finite support `ι →₀ β`. -/ import data.mv_polynomial import linear_algebra.dimension noncomputable theory local attribute [instance, ...
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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 Denumerable (countably infinite) types, as a typeclass extending encodable. This is used to provide explicit encode/decode functions from nat, where the functions are kn...
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/- Copyright (c) 2018 Johan Commelin. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johan Commelin -/ import algebra.linear_ordered_comm_group_with_zero import algebra.big_operators.ring import data.real.basic import data.indicator_function import algebra.algebra.basi...
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#check (⟨1, 2⟩ : nat × nat) #check (⟨trivial, trivial⟩ : true ∧ true) example : true := sorry #check (⟨1, sorry⟩ : Σ' x : nat, x > 0) open tactic #check show true, from ⟨⟩ #check (⟨1, by intro1 >> contradiction⟩ : ∃ x : nat, 1 ≠ 0) universe variables u v #check λ (A B C : Prop), assume (Ha : A) (Hb : B) (Hc : C...
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/- Copyright (c) 2021 Johan Commelin. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johan Commelin -/ import algebra.hom.equiv.type_tags import algebra.module.equiv import data.finsupp.defs import group_theory.free_abelian_group import group_theory.is_free_group impo...
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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.data.ordering init.coe /- Reflect a C++ name object. The VM replaces it with the C++ implementation. -/ inductive name | anonymous : n...
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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.set.function import algebra.group.basic /-! # Equivalence between types In this file we define two types: * `equiv α β` a.k.a...
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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, Bhavik Mehta -/ import category_theory.equivalence import data.equiv.basic namespace category_theory open category universes v₁ v₂ v₃ u₁ u₂ u₃ -- declare th...
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/- Copyright (c) 2018 Patrick Massot. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Patrick Massot, Johannes Hölzl Theory of topological rings. -/ import topology.algebra.group import ring_theory.ideals open classical set filter topological_space open_locale classic...
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import logic constant N : Type.{1} constant I : Type.{1} namespace foo inductive p (a : N) : Prop := intro : p a end foo open foo namespace bla inductive p (a : I) : Prop := intro : p a end bla
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-- Copyright (c) Microsoft Corporation. All rights reserved. -- Licensed under the MIT license. import .lang -- Returns true if program p contains uninstantiated type. def has_arbitrary_type (p:program): bool := list.foldl (λ (b:bool) inst, bor b (match inst with | instruction.binop t lhs bop nswnuw op1 op2...
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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, Mario Carneiro, Reid Barton -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.topology.category.Top.opens import Mathlib.PostPort universes...
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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, Mario Carneiro, Reid Barton, Andrew Yang -/ import category_theory.limits.kan_extension import topology.category.Top.opens import category_theory.adjunction.opposites ...
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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, Leonardo de Moura import logic funext bool using eq_proofs bool namespace set definition set (T : Type) := T → bool definition mem {T : Type} (x : T) (s : set T)...
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open tactic @[user_attribute] meta def my_attr : user_attribute (name → bool) := { name := "my_attr", descr := "my attr", cache_cfg := { mk_cache := λ ls, do { let c := `(λ n : name, (name.cases_on n ff (λ _ _, to_bool (n ∈ ls)) (λ _ _, ff) : bool)), eval_expr (name → bool) c },...
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import super.resolve data.list.alist namespace super namespace clause_type meta def has_dups (t : clause_type) : bool := t.literals.has_dups meta def is_or_ff_clean : clause_type → bool | ff := tt | (disj _ ff _) := bool.ff | (disj _ _ ff) := bool.ff | (disj _ a b) := a.is_or_ff_clean ∧ b.is_or_ff_clean | (imp _ a)...
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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 Quotients -- extends the core library -/ variables {α : Type*} {p : α → Prop} {q : {a // p a} → Prop} lemma forall_subtype : (∀x:{a // p a}, q x) ↔ (∀a (h : p a), q ⟨...
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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, Mario Carneiro, Yaël Dillies -/ import order.compare import order.max import order.rel_classes /-! # Monotonicity This file defines (strictly) monotone/antitone functio...
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/- Copyright (c) 2020 Kevin Kappelmann. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kevin Kappelmann -/ import algebra.continued_fractions.translations /-! # Stabilisation of gcf Computations Under Termination ## Summary We show that the continuants and convergent...
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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, Chris Hughes, Floris van Doorn, Yaël Dillies -/ import data.nat.basic import data.nat.pow /-! # Factorial and variants This file defines the factorial, along with the...
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import data.set.basic variable α: Type* variables A B C: set α open set theorem Q_01a: A ⊆ B ∧ B ⊆ C → A ⊆ C := λ ⟨hl, hr⟩ a ha, hr (hl ha) theorem Q_01b₁: B ⊆ A → A ∪ B = A := λ h, ext $ λ x, ⟨λ hab, or.elim hab (λ ha, ha) (λ hb, h hb), or.inl⟩ theorem Q_01c₁: B ⊆ A → B ∪ C ⊆ A ∪ C := λ h x hbc, or.elim hbc ...
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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, Sebastian Ullrich -/ import Lean.Parser.Term namespace Lean namespace Parser namespace Tactic def underscoreFn : ParserFn := fun c s => let s := symbolF...
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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 -/ prelude import Init.Data.Repr import Init.Data.Option.Basic universes u v w w' inductive Rbcolor | red | black inductive RBNode (α : Type u) (β : α → Typ...
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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, Wojciech Nawrocki -/ import Init.System.IO import Std.Data.RBMap import Lean.Environment import Lean.Data.Lsp import Lean.Data.Json.FromToJson import Lean.Util.Paths ...
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/- Copyright (c) 2018 Simon Hudon. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Simon Hudon -/ import logic.basic tactic.solve_by_elim tactic.hint namespace tactic open expr open tactic.interactive ( casesm constructor_matching ) /-- find all assumptions of the ...
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new_frontend universes u v inductive myList (α : Type u) | nil : myList α | cons : α → myList α → myList α inductive myPair (α : Type u) (β : Type v) | mk : α → β → myPair α β mutual variables (α : Type u) (m : α → Type v) inductive bla : Nat → Type (max u v) | mk₁ (n : Nat) : α → boo n → bla (n+1) | mk₂ (a : α) ...
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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 Direct sum of modules over commutative rings, indexed by a discrete type. -/ import algebra.direct_sum import linear_algebra.basic /-! # Direct sum of modules over commutative r...
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/- Copyright (c) 2017 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Mario Carneiro -/ prelude import init.data.nat.lemmas init.meta.well_founded_tactics universe u namespace nat def bodd_div2 : ℕ → bool × ℕ | 0 := (ff, 0) | (succ n) :=...
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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.special_functions.exp_log /-! # Trigonometric functions ## Main definitions This file contains the foll...
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/- Copyright (c) 2021 Yaël Dillies. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Yaël Dillies, Eric Wieser -/ import algebra.order.module import data.real.basic /-! # Pointwise operations on sets of reals This file relates `Inf (a • s)`/`Sup (a • s)` with `a • Inf ...
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import data.nat.choose data.nat.prime data.fintype algebra.big_operators import tactic.ring /- --------------------------------------------------------------- -/ -- Section 3.1.2 #check Prop #check Type #check Type 5 def my_matrix (R : Type) (n m : ℕ) : Type := (fin n) → (fin m) → R def my_matrix.mul {R : Type} [...
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/- Copyright (c) 2019 Seul Baek. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Seul Baek Correctness lemmas for equality elimination. See 5.5 of <http://www.decision-procedures.org/> for details. -/ import tactic.omega.clause open list.func namespace omega def sym...
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import data.real.basic tactic utils import rates namespace leu_pin section open_locale big_operators open finset (range Ico) @[reducible] def δ (ψ χ : ℕ → ℕ) (k : ℕ) : ℕ := max (ψ $ 3 * k + 2) ((χ $ 3 * k + 2) + 1) variables (a b c s : ℕ → ℝ) (M : ℕ) (ψ χ θ δ₀ : ℕ → ℕ) variables (a_nonneg : ∀ (n : ℕ), ...
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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.int.basic algebra.associated data.nat.gcd /-- The ring of integers adjoined with a square root of `d`. These have the form `a + b √d` where `a b : ℤ`. ...
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namespace hidden universe u /- Version 1 -/ structure has_mul'' (α : Type u): Type (u+1) := (mul : α → α → α) -- def has_mul''_bool_type := has_mul'' bool def has_mul''_bool : has_mul'' bool := has_mul''.mk band -- in bool lib def has_mul''_nat : has_mul'' nat := has_mul''.mk nat.mul -- in nat lib /- Later on ...
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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 linear_algebra.affine_space.affine_map import topology.algebra.group import topology.algebra.mul_action /-! # Topological properties of affine spaces and ma...
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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.nat.parity import data.equiv.fintype import group_theory.perm.sign import data.finset.noncomm_prod /-! # Cyclic permutations ## Main definitions In the foll...
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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) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Mario Carneiro, Patrick Massot -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.topology.maps import Mathlib.PostPort universes u v w x u_...
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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: Reid Barton, Mario Carneiro, Scott Morrison import category_theory.whiskering import category_theory.yoneda import category_theory.limits.cones open category_theory category_th...
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import algebra.ring namespace my_ring variables {R : Type*} [ring R] -- BEGIN theorem mul_zero (a : R) : a * 0 = 0 := begin have h : a * 0 + a * 0 = a * 0 + 0, { rw [←mul_add, add_zero, add_zero] }, rw add_left_cancel h end -- END end my_ring
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/- Copyright (c) 2014 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Leonardo de Moura, Jeremy Avigad, Haitao Zhang General operations on functions. -/ prelude import init.prod init.funext init.logic namespace function variables {A : Type} {B :...
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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 analysis.normed.group.hom import analysis.normed.group.completion /-! # Completion of normed group homs Given two (semi) normed groups `G` and `H` and a norm...
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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 order.filter.bases import topology.algebra.module.basic /-! # Group and ring filter bases > THIS FILE IS SYNCHRONIZED WITH MATHLIB4. > Any changes to this fi...
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/- Copyright (c) 2020 Thomas Browning. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Thomas Browning -/ import data.polynomial.ring_division /-! # "Mirror" of a univariate polynomial In this file we define `polynomial.mirror`, a variant of `polynomial.reverse`. The...
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/- Copyright (c) 2019 Floris van Doorn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn -/ import data.real.basic import data.set.intervals import data.set.pairwise import set_theory.cardinal /-! Proof that a cube (in dimension n ≥ 3) cannot be cubed: T...
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/- Copyright (c) 2018 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Simon Hudon -/ import data.pfunctor.multivariate.basic /-! # Multivariate quotients of polynomial functors. Basic definition of multivariate QPF. QPFs form a compositio...
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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.Util.SCC import Lean.Meta.AbstractNestedProofs import Lean.Elab.MkInhabitant import Lean.Elab.Term import Lean.Elab.DefView namespace Lean name...
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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.limits open category_theory namespace category_theory.limits universes u₁ v₁ variables {C : Type u₁} [category.{u₁ v₁} C] instance [has...
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import theories.measure_theory.sigma_algebra import data.int.order
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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.fintype.card import data.finset.sum import logic.embedding.set /-! ## Instances We provide the `fintype` instance for the sum of two fintypes. -/ unive...
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-- /- This example demonstratea that when we are using `nativeDecide`, we are also trusting the correctness of `implementedBy` annotations, foreign functions (i.e., `[extern]` annotations), etc. -/ def g (b : Bool) := false /- The following `implementedBy` is telling the compiler "trust me, `g` does implement `f`" wh...
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import Lean open Lean open Lean.Elab def runCore (input : String) (failIff : Bool := true) : CoreM Unit := do let env ← getEnv; let opts ← getOptions; let (env, messages) ← process input env opts; messages.toList.forM fun msg => do IO.println (← msg.toString) if failIff && messages.hasErrors then throwError "errors ...
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import Lake open System Lake DSL package ffi { srcDir := "lean" precompileModules := true } lean_lib FFI @[default_target] lean_exe test { root := `Main } target ffi.o pkg : FilePath := do let oFile := pkg.buildDir / "c" / "ffi.o" let srcJob ← inputFile <| pkg.dir / "c" / "ffi.cpp" let flags := #["-I", ...
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/- Copyright (c) 2023 Rémy Degenne. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Rémy Degenne -/ import probability.kernel.basic /-! # Measurability of the integral against a kernel The Lebesgue integral of a measurable function against a kernel is measurable. 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.fintype.card import data.finset.prod /-! # fintype instance for the product of two fintypes. > THIS FILE IS SYNCHRONIZED WITH MATHLIB4. > Any changes to...
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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 Zorn's lemmas. Ported from Isabelle/HOL (written by Jacques D. Fleuriot, Tobias Nipkow, and Christian Sternagel). -/ import data.set.lattice noncomputable theory univ...
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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, Yury Kudryashov -/ import data.real.nnreal import data.set.intervals /-! # Extended non-negative reals We define `ennreal = ℝ≥0∞ := with_no ℝ≥0` to be the type of ext...
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/- Relate restriction maps of the structure presheaf to the universal property of localization. -/ import spectrum_of_a_ring.structure_presheaf import spectrum_of_a_ring.structure_presheaf_localization universe u local attribute [instance] classical.prop_decidable noncomputable theory open topological_space op...
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/- Copyright (c) 2021 Oliver Nash. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Oliver Nash -/ import data.finset.order import order.atoms import order.order_iso_nat import order.zorn import tactic.tfae /-! # Compactness properties for complete lattices For complet...
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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 and Sebastian Ullrich Additional goodies for writing macros -/ prelude import Init.Data.Array.Basic namespace Lean @[extern c inline "lean_box(LEAN_VERSION_...
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/- Copyright (c) 2020 Kenny Lau. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kenny Lau, Anne Baanen -/ import algebra.algebra.equiv /-! # Towers of algebras In this file we prove basic facts about towers of algebra. An algebra tower A/S/R is expressed by having ...
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/- Copyright (c) 2014 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Leonardo de Moura -/ prelude import Init.SizeOf import Init.Data.Nat.Basic universes u v set_option codegen false inductive Acc {α : Sort u} (r : α → α → Prop) : α → Prop wher...
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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 Structures with multiplicative and additive components, including semirings, rings, and fields. The development is modeled after Isabelle's library. Po...
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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, Sebastian Ullrich The State monad transformer. -/ prelude import Init.Control.Basic import Init.Control.Id import Init.Control.Except universes u v w def St...
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import tactic /-! # Definition and basic API for partitions -/ /-- The structure of a partition on a Type α. -/ -- Let α be a type. A *partition* on α is defined to -- be the following data. @[ext] structure partition (α : Type) := -- A set C of subsets of α, called "blocks". (C : set (set α)) -- A hypothesis (a.k...
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import Real. variable f {A : Type} (x y : A) : A check f 10 20 check f 10 check @f variable g {A : Type} (x1 x2 : A) {B : Type} (y1 y2 : B) : B check g 10 20 true check let r : Real -> Real -> Real := g 10 20 in r check g 10 set_option pp::implicit true check let r : Real -> Real -> Real := g 10 20 in r