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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.tactic init.category.option import init.meta.mk_dec_eq_instance meta constant vm_obj : Type @[derive decidable_eq] inductive vm_o...
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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, Alexander Bentkamp -/ import linear_algebra.linear_independent import linear_algebra.projection import data.fintype.card /-! # Bases This file define...
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/- Copyright (c) 2021 Justus Springer. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Justus Springer -/ import algebra.category.Group.basic import algebra.category.Mon.filtered_colimits /-! # The forgetful functor from (commutative) (additive) groups preserves filter...
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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 -/ prelude import Init.Lean.ProjFns import Init.Lean.Meta.WHNF import Init.Lean.Meta.InferType import Init.Lean.Meta.FunInfo import Init.Lean.Meta.LevelDefEq i...
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/- Copyright (c) 2019 Lucas Allen. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Lucas Allen and Scott Morrison -/ import data.mllist import tactic.solve_by_elim /-! # `suggest` and `library_search` `suggest` and `library_search` are a pair of tactics for applying l...
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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 analysis.calculus.times_cont_diff import geometry.manifold.charted_space /-! # Smooth manifolds (possibly with boundary or corners) A smooth manifold i...
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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 -/ import data.matrix.basic /-! # Block Matrices ## Main definitions * `matrix.from_blocks`: build a block matrix out...
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/- Copyright (c) 2018 Andreas Swerdlow. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Andreas Swerdlow -/ import deprecated.subring import algebra.group_with_zero.power /- # Unbundled subfields This file introduces the predicate `is_subfield` on `S : set F` where `F...
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import init.data.nat.basic import init.data.fin.basic import data.vector import .Prelude open Staged open nat open fin open vector section UnipotentPointedMagma structure UnipotentPointedMagma (A : Type) : Type := (e : A) (op : (A → (A → A))) (unipotence : (∀ {x : A} , (op x x) = e)) o...
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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: Leonardo de Moura -/ universes u /-- A difference list is a function that, given a list, returns the original contents of the difference list prepended to the given list. This s...
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import init.data.nat.basic import init.data.fin.basic import data.vector import .Prelude open Staged open nat open fin open vector section Pointed0Magma structure Pointed0Magma (A : Type) : Type := (zero : A) (op : (A → (A → A))) open Pointed0Magma structure Sig (AS : Type) : Type := ...
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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, Patrick Massot, Casper Putz, Anne Baanen -/ import data.matrix.block import data.matrix.notation import linear_algebra.matrix.finite_dimensional import linear_algebra.s...
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-- REESE ALLEN -- RGA2UZ /- UVa CS2102/Sullivan, Spring 2020, Homework #2 This homework assignment is due by noon on Tuesday, Feb 4. Submit your result through the HW#2 tab under the Assignments category on Collab. Do so by uploading a completed version of this file. The goal of this assignment is to develop and e...
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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 measure_theory.measure.outer_measure import order.filter.countable_Inter import data.set.accumulate /-! # Measure spaces This file defines me...
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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 algebra.ordered_ring import data.int.basic import tactic.norm_num /-! # Lemmas for `linarith` This file contains auxiliary lemmas that `linarith` uses to ...
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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 Supplementary theorems about the `string` type. -/ import data.list.basic import data.char namespace string def ltb : iterator → iterator → bool | s₁ s₂ := begin cas...
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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: Sebastian Ullrich, Leonardo de Moura -/ import Lean.Data.Name import Lean.Data.Format namespace Lean namespace SourceInfo def updateTrailing (info : SourceInfo) (trailing : Opt...
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/- Copyright (c) 2021 Adam Topaz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Adam Topaz -/ import category_theory.limits.shapes.products import category_theory.limits.shapes.equalizers import category_theory.limits.cone_category /-! # Multi-(co)equalizers > THIS...
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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, Markus Himmel -/ import data.nat.bitwise import set_theory.game.impartial import set_theory.ordinal_arithmetic /-! # Nim and the Sprague-Grundy theorem This file contains t...
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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 -/ prelude import init.control.estate import init.control.reader import init.lean.runtime import init.lean.compiler.externattr import init.lean.compiler.ir.bas...
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/- Copyright (c) 2019 Kevin Kappelmann. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kevin Kappelmann -/ import algebra.continued_fractions.basic import algebra.continued_fractions.translations import algebra.continued_fractions.continuants_recurrence import algebra....
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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, Mario Carneiro Binary representation of integers using inductive types. Note: Unlike in Coq, where this representation is preferred because of the reliance ...
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import .love05_inductive_predicates_demo /-! # LoVe Demo 11: Logical Foundations of Mathematics We dive deeper into the logical foundations of Lean. Most of the features described here are especially relevant for defining mathematical objects and proving theorems about them. -/ set_option pp.beta true set_option p...
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/- Copyright (c) 2021 Anatole Dedecker. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Anatole Dedecker, Bhavik Mehta -/ import measure_theory.integral.fund_thm_calculus import order.filter.at_top_bot import measure_theory.function.jacobian /-! # Links between an inte...
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import ..src.uexp.meta.ucongr set_option profiler true lemma congr_trans_ex1 {s: Schema} (a b c d e f: Tuple s): (a ≃ c) * ((a ≃ b) * (e ≃ f)) = (a ≃ c) * ((a ≃ b) * (f ≃ e)) := begin ucongr, end lemma congr_trans_ex2 {s: Schema} (a b c d e f: Tuple s): (a ≃ c) * ((b ≃ a) * (e ≃ f)) = (a ≃ c) * ((a ≃ b) ...
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universe variables u structure Functor (A : Type u) := (fn : A → A → A) (inj : ∀ x y, fn x = fn y → x = y) attribute [instance] definition coe_functor_to_fn (A : Type u) : has_coe_to_fun (Functor A) := { F := λ f, A → A → A, coe := Functor.fn } constant f : Functor nat #check f 0 1 set_option pp.coercions fals...
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inductive ty : Type | unit : ty | bool : ty | arrow : ty -> ty -> ty def nm := string inductive tm : Type | var : nm -> tm | unit : tm | true : tm | false : tm | app : tm -> tm -> tm | lam : nm -> tm -> tm | if_then_else : tm -> tm -> tm -> tm inductive value : tm -> Prop | unit : value tm.unit | true : value tm.tru...
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/- Copyright (c) 2019 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Yury Kudryashov -/ import analysis.normed_space.basic import topology.local_homeomorph import topology.algebra.ordered.liminf_limsup /-! # Asymptotics We introduce thes...
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meta def mk_local_pis : expr → tactic (list expr × expr) | p := do (ps, r) ← mk_local_pis p, return ((p :: ps), r)
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import positive_nat.def import data.nat.basic import tactic.interactive import tactic.rcases import tactic.tidy import tactic.wlog import lib.tactics universes u v namespace positive_nat namespace natural lemma add_succ {a b : natural} : a + (b + 1) = (a + b) + 1 := rfl lemma one_add_eq_succ {a : natural} : 1 + a =...
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/- Copyright (c) 2022 Bhavik Mehta, Kexing Ying. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Bhavik Mehta, Kexing Ying -/ import probability.cond_count /-! # Ballot problem This file proves Theorem 30 from the [100 Theorems List](https://www.cs.ru.nl/~freek/100/)....
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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.products.basic import category_theory.types /-! The hom functor, sending `(X, Y)` to the type `X ⟶ Y`. -/ universes v u open oppos...
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import Lean def one := 1 def zero := 0 def f (x : Nat) (b : Bool) := let k := fun b => let y := match b with | true => one | false => zero Nat.succ y x == k b set_option trace.Compiler.simp true #eval Lean.Compiler.compile #[``f]
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/- Copyright (c) 2022 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Leonardo de Moura -/ import Lean.Util.ForEachExpr import Lean.Compiler.LCNF.CompilerM namespace Lean.Compiler.LCNF namespace Closure /-! # Dependency collector for code specia...
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import data.list open perm #congr_rel @eq #congr_rel @iff #congr_rel @perm #congr_rel @heq
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/- Copyright (c) 2021 Thomas Browning. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Thomas Browning -/ import data.finite.card import group_theory.finiteness import group_theory.group_action.quotient /-! # Index of a Subgroup In this file we define the index of a ...
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import tuto_lib /- This file continues the elementary study of limits of sequences. It can be skipped if the previous file was too easy, it won't introduce any new tactic or trick. Remember useful lemmas: abs_le (x y : ℝ) : |x| ≤ y ↔ -y ≤ x ∧ x ≤ y abs_add (x y : ℝ) : |x + y| ≤ |x| + |y| abs_sub (x y : ℝ) : |x - y...
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import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.data.polynomial.degree.lemmas import Mathlib.PostPort namespace Mathlib
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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 linear_algebra.basic /-! # Linear actions For modules M and N, we can regard a linear map M →ₗ End N as a "linear action" of M on N. In this file we introduce the ...
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import Lean @[simp] theorem ex1 (x : Nat) : 2 * x = x + x := sorry @[simp] theorem ex2 (xs : List α) : xs ++ [] = xs := sorry @[simp] theorem ex3 (xs ys zs : List α) : (xs ++ ys) ++ zs = xs ++ (ys ++ zs) := sorry @[simp] theorem ex5 (p : Prop) : p ∨ True := sorry @[simp] theorem ex4 (xs : List α) : ¬(x :: ...
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namespace ex1 -- Prove these equivalences: variables (α : Type) (p q : α → Prop) def proof1 : (∀ x, p x ∧ q x) ↔ (∀ x, p x) ∧ (∀ x, q x) := have left : (∀ x, p x ∧ q x) → (∀ x, p x) ∧ (∀ x, q x), from assume h : (∀ x, p x ∧ q x), and.intro (λ z : α, (h z).left) (λ z : α, (h z).right), ...
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import tactic import data.set.finite import topological_spaces import neighbourhoods open set open topological_space -- Convergence d'une suite : def seq_lim {X : Type} [topological_space X] (u : ℕ → X) (l : X) : Prop := ∀ (V : set X), V ∈ neighbourhoods l → ∃ (N : ℕ), ∀ n ≥ N, u n ∈ V -- Fonction continue : def c...
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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 Adjoining roots of polynomials -/ import data.polynomial.field_division import linear_algebra.finite_dimensional import ring_theory.adjoin.basic import ri...
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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 -/ /-! # booleans This file proves various trivial lemmas about booleans and their relation to decidable propositions. ## Notations This file...
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structure Bijection ( U V : Type ) := ( morphism : U → V ) ( inverse : V → U ) ( witness_1 : ∀ u : U, inverse (morphism u) = u ) ( witness_2 : ∀ v : V, morphism (inverse v) = v ) class Finite ( α : Type ) := ( cardinality : nat ) ( bijection : Bijection α (fin cardinality) ) lemma empty_exfalso (x : fals...
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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.Elab.Deriving.Basic import Lean.Elab.Deriving.Util import Lean.Elab.Deriving.Inhabited import Lean.Elab.Deriving.BEq import Lean.Elab.Deriving.D...
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def list_map {α β : Type} : (α → β) → (list α) → list β | f list.nil := list.nil | f (h::t) := (f h)::(list_map f t) /- 1. Write a polymorphic function, someSatisfies, that takes a a predicate function, p, of type α → bool, and list of values of type α (a type parameter), and and that returns true (tt) if and onl...
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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: Nathaniel Thomas, Jeremy Avigad, Johannes Hölzl, Mario Carneiro, Anne Baanen -/ import algebra.group.hom import algebra.module.basic import algebra.group_action_hom /-! # Linear maps and...
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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.Elab.Command import Lean.Parser.Syntax import Lean.Elab.Util namespace Lean.Elab.Term /-- Expand `optional «precedence»` where «precedence» :=...
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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 -/ import analysis.box_integral.divergence_theorem import analysis.box_integral.integrability import measure_theory.integral.interval_integral /-! # Divergence theore...
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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.whiskering import category_theory.functor.fully_faithful import category_theory.natural_isomorphism /-! # Disjoint union of categories We define ...
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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 logic.unique import order.boolean_algebra /-! # Basic properties of sets Sets in Lean are homogeneous; all their elements have the same type...
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/- Copyright (c) 2019 Johannes Hölzl, Zhouhang Zhou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Zhouhang Zhou -/ import measure_theory.integration /-! # Almost everywhere equal functions Two measurable functions are treated as identical if they ...
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import logic constant C {A : Type} : A → Prop attribute C [class] constant f {A : Type} (a : A) [H : C a] : Prop definition g {A : Type} (a b : A) {H1 : C a} {H2 : C b} : Prop := f a ∧ f b
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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, Thomas Browning -/ import dynamics.periodic_pts import group_theory.group_action.basic import group_theory.quotient_group /-! # Properties of group actions involving quoti...
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/- Copyright (c) 2020 Kevin Lacker. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kevin Lacker -/ import tactic.ring import data.nat.prime /-! # IMO 1959 Q1 Prove that the fraction `(21n+4)/(14n+3)` is irreducible for every natural number `n`. Since Lean doesn't h...
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/- Copyright (c) 2016 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Jeremy Avigad -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.data.list.perm import Mathlib.data.list.chain import Mathlib.PostPort universes u_1 uu name...
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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 algebra.algebra.subalgebra import field_theory.finiteness /-! # Finite dimensional vector spaces Definition and basic properties of finite dimensional vector spa...
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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 -/ import Std.Data.AssocList namespace Std universes u v w def HashMapBucket (α : Type u) (β : Type v) := { b : Array (AssocList α β) // b.size > 0 } def Ha...
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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.algebra.basic import set_theory.cardinal.ordinal import tactic.ring_exp /-! # Quaternions In this file we define quaternions `ℍ[R]` over a commutat...
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/- Copyright (c) 2014 Parikshit Khanna. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Parikshit Khanna, Jeremy Avigad, Leonardo de Moura, Floris van Doorn, Mario Carneiro Basic properties of lists. -/ import tactic.interactive tactic.mk_iff_of_inductive_prop logi...
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/- Copyright (c) 2021 Sébastien Gouëzel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Sébastien Gouëzel -/ import measure_theory.covering.vitali_family import measure_theory.measure.regular import measure_theory.function.ae_measurable_order import measure_theory.inte...
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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: Johannes Hölzl, Yury Kudryashov Extended non-negative reals -/ import data.real.nnreal order.bounds data.set.intervals tactic.norm_num noncomputable theory open classical set lattice ...
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/- Copyright (c) 2015 Jakob von Raumer. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn Properties of trunc_index, is_trunc, trunctype, trunc, and the pointed versions of these -/ -- NOTE: the fact that (is_trunc n A) is a mere proposition is proved i...
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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 group_theory.perm.sign import group_theory.order_of_element namespace equiv.perm open equiv function finset variables {α : Type*} {β : Type*} [decidable_eq 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.Expr import Lean.Util.MonadCache import Lean.Meta.Basic namespace Lean.Meta namespace ForEachExpr abbrev M := MonadCacheT Expr Unit MetaM mut...
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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 order.rel_iso import order.lattice_intervals import order.galois_connection /-! # Modular Lattices This file defines Modular Lattices, a kind of lattice usefu...
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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.ProjFns import Lean.Meta.WHNF import Lean.Meta.InferType import Lean.Meta.FunInfo import Lean.Meta.LevelDefEq import Lean.Meta.Check import Lean...
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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 open filter topolo...
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eval nat.add (nat.of_num 3) (nat.of_num 6) open nat eval nat.add (nat.of_num 3) (nat.of_num 6) eval (3:nat) + 6
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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 Defines a functor between categories. (As it is a 'bundled' object rather than the `is_functorial` typeclass parametrised by the underlyin...
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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 measure_theory.function.strongly_measurable.basic /-! # Egorov theorem > THIS FILE IS SYNCHRONIZED WITH MATHLIB4. > Any changes to this file require a correspondin...
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/- Copyright (c) 2019 Neil Strickland. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Neil Strickland, Yury Kudryashov -/ import algebra.group.semiconj /-! # Commuting pairs of elements in monoids We define the predicate `commute a b := a * b = b * a` and provide som...
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/- Copyright (c) 2021 Eric Wieser. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Eric Wieser -/ import algebra.module.pi import data.polynomial.basic import group_theory.group_action.prod import group_theory.group_action.units import data.complex.module /-! # Tests ...
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import data.real.basic def fn_ub (f : ℝ → ℝ) (a : ℝ) : Prop := ∀ x, f x ≤ a def fn_lb (f : ℝ → ℝ) (a : ℝ) : Prop := ∀ x, a ≤ f x def fn_has_ub (f : ℝ → ℝ) := ∃ a, fn_ub f a def fn_has_lb (f : ℝ → ℝ) := ∃ a, fn_lb f a variable f : ℝ → ℝ -- BEGIN example (h : ∀ a, ∃ x, f x < a) : ¬ fn_has_lb f := sorry example : ¬ f...
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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, Kevin Buzzard, Scott Morrison, Johan Commelin, Chris Hughes, Johannes Hölzl, Yury Kudryashov -/ import algebra.group_power.basic /-! # Instances on spaces of monoid...
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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.ReplaceLevel import Lean.Util.ReplaceExpr import Lean.Util.CollectLevelParams import Lean.Util.Constructions import Lean.Meta.SizeOf import...
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/- Copyright (c) 2021 François Sunatori. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: François Sunatori -/ import analysis.complex.circle /-! # Isometries of the Complex Plane The lemma `linear_isometry_complex` states the classification of isometries in the comple...
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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 algebraic_topology.dold_kan.homotopies import data.nat.parity import tactic.ring_exp /-! # Study of face maps for the Dold-Kan correspondence TODO (@joelriou) contin...
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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 -/ import analysis.box_integral.divergence_theorem import analysis.box_integral.integrability import measure_theory.integral.interval_integral import data.set.interval...
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#eval #"\x41" #eval #"\x42" #eval #"\x43"
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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 -/ import group_theory.order_of_element data.zmod.basic algebra.pi_instances group_theory.group_action group_theory.quotient_group open equiv fintype finset is_group_action...
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import Lean open Lean open Lean.Meta open Lean.Elab.Tactic universes u axiom elimEx (motive : Nat → Nat → Sort u) (x y : Nat) (diag : (a : Nat) → motive a a) (upper : (delta a : Nat) → motive a (a + delta.succ)) (lower : (delta a : Nat) → motive (a + delta.succ) a) : motive y x theorem ex1 (p q : Nat) : p ≤...
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/- Copyright (c) Sébastien Gouëzel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Sébastien Gouëzel -/ import analysis.calculus.deriv analysis.normed_space.finite_dimension /-! # Normed space structure on `ℂ`. This file gathers basic facts on complex numbers of an a...
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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, Sebastian Ullrich -/ import Lean.Message import Lean.Parser.Command namespace Lean namespace Parser namespace Module def «prelude» := parser! "prelude" def...
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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 -/ import data.dfinsupp.basic import group_theory.submonoid.operations import group_theory.subgroup.basic /-! # Direct sum This file defines the direct sum of abelian groups, ind...
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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, Jeremy Avigad -/ prelude import init.data.nat.basic init.data.nat.div init.data.nat.pow init.meta init.algebra.functions universes u namespace nat attribute ...
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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: Jan-David Salchow, Sébastien Gouëzel, Jean Lo -/ import topology.algebra.ring linear_algebra.basic ring_theory.algebra /-! # Theory of topological modules and continuous linear m...
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import logic.basic tactic.basic namespace tactic open expr open tactic.interactive ( casesm constructor_matching ) /-- find all assumptions of the shape `¬ (p ∧ q)` or `¬ (p ∨ q)` and replace them using de Morgan's law. -/ meta def distrib_not : tactic unit := do hs ← local_context, hs.for_each $ λ h, al...
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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 Nonnegative real numbers. -/ import data.real.basic order.lattice algebra.field noncomputable theory open lattice open_locale classical /-- Nonnegative real numbers....
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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.Data.LOption import Lean.Environment import Lean.Class import Lean.ReducibilityAttrs import Lean.Util.Trace import Lean.Util.RecDepth import Lea...
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/- Copyright (c) 2020 Adam Topaz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Adam Topaz -/ import Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.topology.category.Top.default import Mathlib.PostPort universes u_1 l namespace Mathlib /-! # ...
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-- Function expression are terms that have types #check band #check nat.add #check string.append -- Function application expressions are terms that have types #check band tt tt #check nat.add 2 3 #check string.append "I love " "logic!" -- Function application expessions reduce to return values #eval band tt tt #eva...
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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 order.complete_boolean_algebra import data...
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/- # The Maze Game, version 1.3.0. ## By Kevin Buzzard An idea coming out of discussions with Kendall Frey. # What is this game? Four mazes and a theorem (which I must confess I haven't yet proved). You are in a maze of twisty passages, all distinct (at this point). Use the tactics `n`, `s`, `e`, `w` to escape. U...
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#lang lean4 def compute (v : Nat) : Thunk Nat := ⟨fun _ => let xs := List.replicate 100000 v; xs.foldl Nat.add 0⟩ @[noinline] def test (t : Thunk Nat) (n : Nat) : Nat := n.repeat (fun r => t.get + r) 0 def main (xs : List String) : IO UInt32 := IO.println (toString (test (compute 1) 100000)) *> pure 0
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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 algebra.direct_limit import field_theory.splitting_field import analysis.complex.polynomial /-! # Algebraic Closure In this file we define the typeclass for algebraic...
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/- Copyright (c) 2022 Hans Parshall. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Hans Parshall -/ import analysis.matrix import analysis.normed_space.basic import data.complex.is_R_or_C import linear_algebra.unitary_group /-! # Unitary matrices This file collects ...
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/- Copyright (c) 2021 Martin Dvorak. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Martin Dvorak, Kyle Miller, Eric Wieser -/ import data.matrix.notation import linear_algebra.bilinear_map import linear_algebra.matrix.determinant import algebra.lie.basic /-! # Cross...
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def f (x y : Nat) : Nat := x + 2*y -- "+" with priority higher than the builtin "+" notation infix:65 (priority := high) "+" => f #check 1 + 2 theorem ex (x y : Nat) : x + y = f x y := rfl