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set_option blast.strategy "cc" set_option blast.cc.heq true definition ex1 (a b c a' b' c' : nat) : a = a' → b = b' → c = c' → a + b + c + a = a' + b' + c' + a' := by blast set_option pp.beta true print ex1
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import category_theory.concrete_category import o_minimal.definable /- The category of (literal) definable subsets of Rⁿ and definable functions between them (not just continuous ones). Used as the index category for "definable sheaves". -/ namespace o_minimal universe u variables {R : Type u} (S : struc R) struct...
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definition lt (a b : mynat) := a ≤ b ∧ ¬ (b ≤ a) instance : has_lt mynat := ⟨lt⟩ lemma lt_iff_succ_le (a b : mynat) : a < b ↔ succ a ≤ b := begin split, exact lt_aux_one a b, exact lt_aux_two a b, end
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import .classes import util.data.functor inductive lens_type | lens | traversal | prism universes u v /- Features - Lens types: lens, traversal, prism, indexed (...), - conversion - lens laws - parametric lens laws -/ def const {α : Sort u} {β : Sort v} (x : α) (_ : β) := x instance {α} : functor (cons...
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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) 2020 Bhavik Mehta, Edward Ayers, Thomas Read. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Bhavik Mehta, Edward Ayers, Thomas Read -/ import category_theory.limits.shapes.binary_products import category_theory.limits.shapes.constructions.preserve_bi...
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/- Copyright (c) 2018 Scott Morrison. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Scott Morrison -/ import tactic.fin_cases import data.nat.prime import group_theory.perm.sign import data.finset.intervals example (f : ℕ → Prop) (p : fin 3) (h0 : f 0) (h1 : f 1) (h2...
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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: Gabriel Ebner -/ import system.io leanpkg.toml open io io.proc variable [io.interface] namespace leanpkg def exec_cmd (args : io.process.spawn_args) : io unit := do let cmdstr ...
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/- Copyright (c) 2020 Yury Kudryashov. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Yury Kudryashov, Johannes Hölzl, Mario Carneiro, Patrick Massot -/ import order.filter.basic data.set.countable /-! # Filter bases A filter basis `B : filter_basis α` on a type `α` ...
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-- Duration /- [Duration] is parameterized by an instance of type [SystemType], and it's a sub-attribute to [Efficient]. -/ import SystemModel.System inductive Duration (sys_type: SystemType): Prop | intro : (exists duration: sys_type ^.Contexts -> sys_type ^.Phases -> sys_type ^.Stakeholders -> @SystemInsta...
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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: Sebastian Ullrich Elaboration of syntax quotations as terms and patterns (in `match_syntax`). See also `./Hygiene.lean` for the basic hygiene workings and data types. -/ prelud...
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inductive Foo (n : Nat) class Bar (n: Nat) (α : Type u) (β: outParam (Type u)) where bar: Foo n → Fin (n+1) → α → β instance: Bar n (Foo (n+1)) (Foo n) := sorry example (t: Foo (n+2)) (s₁: Foo (n+1)) (s₂: Foo n) (t': Foo n) (hk: k < n + 1) (hm: m < n + 2): Bar.bar s₂ ⟨k, hk⟩ (Bar.bar s₁ ⟨m, ‹_›⟩ t) = t' := sorr...
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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.data.repr init.meta.format import init.meta.contradiction_tactic init.meta.constructor_tactic import init.meta.relation_tacti...
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import super open tactic constant nat_has_dvd : has_dvd nat attribute [instance] nat_has_dvd noncomputable def prime (n : ℕ) := ∀d, d ∣ n → d = 1 ∨ d = n axiom dvd_refl (m : ℕ) : m ∣ m axiom dvd_mul (m n k : ℕ) : m ∣ n → m ∣ (n*k) axiom nat_mul_cancel_one (m n : ℕ) : m = m * n → n = 1 example {m n : ℕ} : prime (m *...
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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: Stephen Morgan, Scott Morrison import category_theory.natural_isomorphism import category_theory.whiskering import category_theory.const import category_theory.opposites import ...
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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 algebra.indicator_function import topology.algebra.group import topology.continuous_on import topology.instances.ennreal /-! # Semicontinuous maps A fu...
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import data.polynomial import .determinants universes u v w namespace matrix variables {m n : Type u} [fintype m] [fintype n] [decidable_eq n] variables {R : Type v} [comm_ring R] [decidable_eq R] open polynomial def map {X Y : Type w} (f : X → Y) : matrix m n X → matrix m n Y := λ M i j, f (M i j) def characteris...
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/- Copyright (c) 2022 María Inés de Frutos-Fernández, Yaël Dillies. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: María Inés de Frutos-Fernández, Yaël Dillies -/ import tactic.positivity import data.real.nnreal /-! # Group seminorms This file defines norms and semin...
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#check ℕ #check bool #check ℕ → bool #check ℕ × bool #check ℕ → ℕ #check ℕ × ℕ → ℕ #check ℕ → ℕ → ℕ #check ℕ → (ℕ → ℕ) #check ℕ → ℕ → bool #check (ℕ → ℕ) → ℕ -- Declaring new constants and -- constructors for types constants α β : Type constant F : Type → Type constant G : Type → Type → Type #check α #check F α #ch...
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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 -/ namespace Lean inductive LBool := | false | true | undef namespace LBool instance : Inhabited LBool := ⟨false⟩ def neg : LBool → LBool | true ...
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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, Reid Barton, Simon Hudon, Kenny Lau -/ import data.equiv.basic /-! # Opposites In this file we define a type synonym `opposite α := α`, denoted by `αᵒᵖ` and two synon...
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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 Instances of `traversable` for types from the core library -/ import data.list.forall2 import data.set.lattice import control.traversable.lemmas universes u v section optio...
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/- Copyright (c) 2019 Michael Howes. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Michael Howes Defining a group given by generators and relations -/ import group_theory.free_group import group_theory.quotient_group variables {α : Type} /-- Given a set of relation...
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/- Copyright (c) 2020 David Wärn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: David Wärn -/ import category_theory.elements import category_theory.single_obj /-! # Actions as functors and as categories From a multiplicative action M ↻ X, we can construct a functor...
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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 Parallel computation of a computable sequence of computations by a diagonal enumeration. The important theorems of this operation are proven as terminates_paralle...
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import algebra.group algebra.category open eq sigma unit category algebra equiv set_option pp.implicit true set_option pp.universes true set_option pp.notation false section parameters {D₀ : Type} [C : precategory D₀] {D₂ : Π ⦃a b c d : D₀⦄ (f : hom a b) (g : hom c d) (h : hom a c) (i : hom b d), Type} ...
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/- Copyright (c) 2020 Yakov Pechersky. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Yakov Pechersky -/ import data.string.basic /-! # Parsers `parser α` is the type that describes a computation that can ingest a `char_buffer` and output, if successful, a term of ty...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl -/ import algebra.big_operators.basic /-! # Results about big operators with values in an ordered algebraic structure. Mostly monotonicity results for the `∑` operati...
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import data.list open perm example (p : Prop) (l : list nat) : ¬ l ~ l → p := by blast example (a : nat) : ¬ a = a → false := by blast example (A : Type) (p : Prop) (a b c : A) : a = b → ¬ b = a → p := by blast example (A : Type) (p : Prop) (a b c : A) : a = b → b ≠ a → p := by blast
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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: Sebastian Ullrich The Reader monad transformer for passing immutable State. -/ prelude import Init.Control.Basic import Init.Control.Id import Init.Control.Except namespace Re...
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#eval ``({pos . line := has_zero.zero, col := 1}).to_raw_expr.to_raw_fmt
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constant p : nat → nat → Prop constant p_trans : ∀ a b c, p a b → p b c → p a c definition lemma1 (a b c d : nat) : a = d → p b c → p a b → p a c := begin intros, apply p_trans, blast, blast end print lemma1
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/- Copyright (c) 2021 Alex J. Best. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Alex J. Best -/ import number_theory.cyclotomic.basic import ready_for_mathlib.homogenization open_locale big_operators open polynomial finset mv_polynomial -- TODO might be nice to h...
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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 measure_theory.measure.measure_space /-! # Typeclasses for measurability of operations In this file we define classes `has_measurable_mul` etc and prove do...
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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.algebra.basic /-! # Trivial Square-Zero Extension Given a module `M` over a ring `R`, the trivial square-zero extension of `M` over `R` is defined to be the `...
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/- Copyright (c) 2021 Riccardo Brasca. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Riccardo Brasca -/ import linear_algebra.free_module.finite.basic import linear_algebra.matrix.charpoly.coeff /-! # Characteristic polynomial We define the characteristic polynomi...
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/- Copyright (c) 2022 Jon Eugster. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jon Eugster -/ import algebra.char_p.basic import ring_theory.ideal.local_ring import algebra.is_prime_pow import data.nat.factorization.basic /-! # Characteristics of local rings > THI...
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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, Jeremy Avigad -/ import order.zorn import order.copy import data.set.finite import tactic.monotonicity /-! # Theory of filters on sets ## Main definitions * `filter`...
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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 -/ prelude import Init.Core import Init.Data.ToString.Basic structure FloatSpec where float : Type val : float lt : float → float → Prop le : ...
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/- Copyright (c) 2021 Rémy Degenne. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Zhouhang Zhou, Yury Kudryashov -/ import measure_theory.function.l1_space import analysis.normed_space.indicator_function /-! # Functions integrable on a set and at a filter We define...
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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 -/ prelude import Init.Core universes u v /- Classical reasoning support -/ namespace Classical axiom choice {α : Sort u} : Nonempty α → α noncomputable d...
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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: Stephen Morgan, Scott Morrison import category_theory.products import category_theory.types import category_theory.natural_isomorphism import data.opposite universes v₁ v₂ u₁ u...
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import data.real.basic import algebra.group.pi set_option pp.beta true /- In this file, we'll learn about the ∀ quantifier, and the disjunction operator ∨ (logical OR). Let P be a predicate on a type X. This means for every mathematical object x with type X, we get a mathematical statement P x. In Lean, P x has ty...
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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 Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.category_theory.limits.shapes.split_coequalizer import Mathlib.category_theory.limits.preserves...
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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 geometry.manifold.algebra.smooth_functions import linear_algebra.finite_dimensional import analysis.normed_space.inner_product /-! # Constructing exampl...
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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 IdempotentAdditiveMagma structure IdempotentAdditiveMagma (A : Type) : Type := (plus : (A → (A → A))) (idempotent_plus : (∀ {x : A} , (plus x x) = x)) ope...
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/- Copyright (c) 2015 Floris van Doorn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn Colimits in a category -/ import .limits ..constructions.opposite open is_trunc functor nat_trans eq -- we define colimits to be the dual of a limit namespace c...
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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 topology.maps import order.filter.pi /-! # Constructions of new topological spaces from old ones > THIS FILE IS SYNCHRONIZED ...
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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.computation.correctness_terminating import data.nat.fib import tactic.solve_by_elim /-! # Approximations for Continued Fraction...
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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 /-! # Relation chain This file provides basic results about `list.chain` (definition in ...
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/- Copyright (c) 2022 E.W.Ayers. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: E.W.Ayers -/ import Lean.Meta.PPGoal import Lean.Widget.InteractiveCode import Lean.Widget.InteractiveGoal import Lean.Data.Lsp.Extra import Lean.Elab.InfoTree namespace Lean.Widget regi...
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universes u v -- setOption pp.binderTypes False set_option pp.implicit true set_option trace.compiler.llnf true -- set_option trace.compiler.boxed true namespace x1 def f (x : Bool) (y z : Nat) : Nat := match x with | true => y | false => z + y + y end x1 namespace x2 def f (x : Nat) : Nat := x end x2 namespa...
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/- Copyright (c) 2015 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Jeremy Avigad Cardinality calculations for finite sets. -/ import .to_set .bigops data.set.function data.nat.power data.nat.bigops open nat eq.ops namespace finset variables {...
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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 open tactic meta def fsplit : tactic unit := do [c] ← target >>= instantiate_mvars >>= whnf >>= get_constructors_for | tactic.fail "fsplit tactic failed, target ...
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/- Copyright (c) 2015 Robert Y. Lewis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Robert Y. Lewis The intermediate value theorem. -/ import .real_limit open real analysis set classical noncomputable theory private definition inter_sup (a b : ℝ) (f : ℝ → ℝ) := sup...
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/- Copyright (c) 2021 Kalle Kytölä. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kalle Kytölä, Yury Kudryashov -/ import topology.algebra.module.weak_dual import analysis.normed_space.dual import analysis.normed_space.operator_norm /-! # Weak dual of normed space >...
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import data.real.basic /- In the previous file, we saw how to rewrite using equalities. The analogue operation with mathematical statements is rewriting using equivalences. This is also done using the rw tactic. Lean uses ↔ to denote equivalence instead of ⇔. In the following exercises we will use the lemma: sub_...
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import data.nat.basic import tactic.squeeze import data.list.perm namespace tactic namespace interactive setup_tactic_parser /-- version of squeeze_simp that tests whether the output matches the expected output -/ meta def squeeze_simp_test (key : parse cur_pos) (slow_and_accurate : parse (tk "?")?) (use_iota_e...
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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 linear_algebra.determinant import topology.algebra.ring /-! # Topological properties of matrices This file is a place to collect topological results about matrices...
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/- Copyright (c) 2018 Mario Carneiro and Kevin Buzzard. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Mario Carneiro, Kevin Buzzard -/ import data.equiv.algebra import linear_algebra.linear_combination import ring_theory.ideal_operations import ring_theory.subring o...
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/- Copyright (c) 2021 Rémy Degenne. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Rémy Degenne -/ import measure_theory.lp_space /-! # Conditional expectation The conditional expectation will be defined for functions in `L²` by an orthogonal projection into a compl...
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/- clarksters seg8st; https://github.com/sgoldberg02/cs2120f21mycopy.git (should end with .git). -/ /- EQUALITY -/ /- #1 Suppose that x, y, z, and w are arbitrary objects of some type, T; and suppose further that we know (have proofs of the facts) that x = y, y = z, and w = z. Give a very, very short English pro...
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import standard using pair -- Test tuple notation check (3, false, 1, true)
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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 algebra.group.inj_surj import algebra.group_with_zero.defs import algebra.hom.units import logic.nontrivial import group_theory.group_action.units /-! # Group...
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import ..fibrant open prod prod.ops open fib_eq /- Ported from the Lean HoTT library, trying to keep as close as possible to the original implementation. Changes while porting: change equality notation (from "=" to "~"), replace usages of "reflexivity" with "simp" tactic. The "simp" tactic allows to apply...
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import topology.algebra.ring import ring_theory.subring import ring_theory.ideal_operations import for_mathlib.nonarchimedean.open_subgroup universes u v variables {A : Type u} {B : Type v} variables [comm_ring A] [topological_space A] [topological_ring A] variables [comm_ring B] [topological_space B] [topological_r...
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prelude constant N : Type.{1} definition B : Type.{1} := Type.{0} constant ite : B → N → N → N constant and : B → B → B constant f : N → N constant p : B constant q : B constant x : N constant y : N constant z : N infixr ` ∧ `:25 := and notation `if` c `then` t:45 `else` e:45 := ite c t e #check if p ∧ q then f x else ...
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/- Copyright (c) 2021 Anne Baanen. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Anne Baanen -/ import ring_theory.adjoin.basic import ring_theory.power_basis import linear_algebra.matrix.basis /-! # Power basis for `algebra.adjoin R {x}` This file defines the cano...
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-- def run1 (i : Nat) (n : Nat) (xs : List Nat) : Nat := n.repeat (fun r => dbg_trace ">> [{i}] {r}"; xs.foldl (fun a b => a + b) r) 0 def tst (n : Nat) : IO UInt32 := let ys := (List.replicate n 1); let ts : List (Task Nat) := (List.iota 10).map (fun i => Task.spawn fun _ => run1 (i+1) n ys); let ns : List Nat :...
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/- Copyright (c) 2017 Johannes Hölzl. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Johannes Hölzl, Mario Carneiro, Yury Kudryashov -/ import order.filter.pi import topology.bases import data.finset.order import data.set.accumulate import topology.bornology.basic impo...
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import standard structure Semigroup : Type := (carrier : Type) (mul : carrier → carrier → carrier) (mul_assoc : ∀ a b c : carrier, mul (mul a b) c = mul a (mul b c)) notation a `*` b := Semigroup.mul _ a b attribute Semigroup.carrier [coercion] structure morphism (S1 S2 : Semigroup) : Type := (mor : S1 → S2) (resp_m...
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structure Foo where name : String val : List Nat lower : Nat := List.length val inv : val.length >= lower flag : Bool deriving Hashable #eval hash <| { name := "Joe", val := List.iota 40, flag := true, inv := by decide : Foo } inductive Tree (α : Type) where | node : List (Tree α) → Bool → Tree α ...
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import logic data.prod open prod inhabited section variable {A : Type} variable {B : Type} variable Ha : inhabited A variable Hb : inhabited B include Ha Hb theorem tst : inhabited (Prop × A × B) end (* print(get_env():find("tst"):value()) *)
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import tactic import data.set import order.conditionally_complete_lattice import .sequences import .si_sequence import .topology import .sups noncomputable theory open_locale classical section bw variables {X: Type} [espace_metrique X] [conditionally_complete_linear_order X] open espace_metrique open set /-- FIXME...
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import basic import group_theory.order_of_element namespace myint lemma add_pair_eq {a b : ℕ × ℕ} : ⟦a⟧ + ⟦b⟧ = add_pair a b := rfl /- `quotient.ind` gives the correspondence between elements of a quotient type and equivalence classes of the underlying type. It states that to prove `β q` for every `q` in a quotient ...
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/- Copyright (c) 2018 Robert Y. Lewis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Robert Y. Lewis A tactic for discharging linear arithmetic goals using Fourier-Motzkin elimination. `linarith` is (in principle) complete for ℚ and ℝ. It is not complete for n...
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/- Benchmark for new code generator -/ inductive Expr | Val : Int → Expr | Var : String → Expr | Add : Expr → Expr → Expr | Mul : Expr → Expr → Expr | Pow : Expr → Expr → Expr | Ln : Expr → Expr open Expr partial def pown : Int → Int → Int | a, 0 => 1 | a, 1 => a | a, n => let b := pown a (n / 2); b * b * (if n ...
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/- Copyright (c) 2016 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Leonardo de Moura -/ prelude import init.logic init.algebra.classes init.meta init.meta.decl_cmds init.meta.smt.rsimp /- Make sure instances defined in this file...
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/- LoVe Demo 1: Definitions and Lemma Statements -/ import .lovelib namespace LoVe /- Types and Terms -/ #check ℕ #check ℤ #check empty #check unit #check bool #check ℕ → ℤ #check ℤ → ℕ #check bool → ℕ → ℤ #check (bool → ℕ) → ℤ #check ℕ → (bool → ℕ) → ℤ #check λx : ℕ, x #check λf : ℕ → ℕ, λg : ℕ → ℕ, λh : ℕ → ℕ...
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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: Johan Commelin, Scott Morrison -/ import algebraic_geometry.prime_spectrum.basic import algebra.category.Ring.colimits import algebra.category.Ring.limits import topology.sheaves.local...
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import Lean open Lean open Lean.Compiler #eval (do assert! hasCSimpAttribute (← getEnv) ``List.map_eq_mapTR : MetaM Unit) #eval (do assert! hasCSimpAttribute (← getEnv) ``List.append_eq_appendTR : MetaM Unit) #eval (do assert! !hasCSimpAttribute (← getEnv) ``List.append : MetaM Unit)
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/- Copyright (c) 2021 Jireh Loreaux. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jireh Loreaux -/ import algebra.algebra.spectrum import analysis.calculus.deriv import analysis.special_functions.pow /-! # The spectrum of elements in a complete normed algebra This f...
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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) when (failIff && messages.hasErrors) $ throwError "errors...
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import Lean.Linter.Util import Lean.Linter.Builtin import Lean.Linter.Deprecated import Lean.Linter.UnusedVariables import Lean.Linter.MissingDocs
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/- Copyright (c) 2015 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jeremy Avigad, Robert Y. Lewis The power operation on monoids and groups. We separate this from group, because it depends on nat, which in turn depends on other parts of algebra. We h...
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/- Copyright (c) 2014 Jeremy Avigad. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors Jeremy Avigad, Leonardo de Moura, Johannes Hölzl, Mario Carneiro -- QUESTION: can make the first argument in ∀ x ∈ a, ... implicit? -/ import logic.basic data.set.basic data.equiv.basic...
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import data.complex.basic import data.fintype.basic import data.matrix.basic import linear_algebra.determinant import linear_algebra.nonsingular_inverse import tactic noncomputable theory open_locale classical open_locale matrix open_locale big_operators universes u u' variables {m n l : Type u} [fintype m] [fint...
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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, Mario Carneiro -/ import data.list.set data.list.comb init.data.array universes u v w def pnat := {n : ℕ // n > 0} notation `ℕ+` := pnat def bucket_array (...
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set_option pp.implicit true set_option pp.binder_types false -- set_option trace.compiler.boxed true partial def contains : String → Char → Nat → Bool | s c i := if s.atEnd i then false else if s.get i == c then true else contains s c (s.next i) def main : IO Unit := let s1 := "hello" in IO.println (contai...
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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.tactic namespace Mathlib namespace tactic
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/- Copyright (c) 2020 Yury G. Kudryashov. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Yury G. Kudryashov -/ import analysis.normed_space.basic /-! # Extended norm In this file we define a structure `enorm 𝕜 V` representing an extended norm (i.e., a norm that can t...
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import logic context variable {A : Type} variable f : A → A → A variable one : A variable inv : A → A infixl `*` := f postfix `^-1`:100 := inv definition is_assoc := ∀ a b c, (a*b)*c = a*b*c definition is_id := ∀ a, a*one = a definition is_inv := ∀ a, a*a^-1 = one end inductive group_struc...
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/- Copyright (c) 2021 Riccardo Brasca. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Riccardo Brasca, Johan Commelin -/ import analysis.normed.group.SemiNormedGroup import category_theory.preadditive.additive_functor import analysis.normed.group.hom_completion /-! # ...
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/- Linear Diophantine equation solver Author: Marc Huisinga -/ import Lean.Data.HashMap open Lean namespace Int def roundedDiv (a b : Int) : Int := Id.run <| do let mut div := a / b let sgn := if a ≥ 0 ∧ b ≥ 0 ∨ a < 0 ∧ b < 0 then 1 else -1 let rest := (a % b).natAbs if 2*rest ≥ b.natAbs then ...
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/- Copyright (c) 2018 Robert Y. Lewis. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Robert Y. Lewis, Mario Carneiro, Johan Commelin -/ import data.int.modeq import data.zmod.basic import number_theory.padics.padic_numbers import ring_theory.discrete_valuation_ring im...
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/- Copyright (c) 2020 Kevin Buzzard. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Kevin Buzzard, Bryan Gin-ge Chen, Robert Y. Lewis, Scott Morrison -/ import tactic.doc_commands /-! # Core tactic documentation This file adds the majority of the interactive tactics...
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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 Mathlib.PrePort import Mathlib.Lean3Lib.init.default import Mathlib.category_theory.limits.shapes.equalizers import Mathlib.category_theory.limits.shapes.pullbacks...
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/- Copyright (c) 2016 Floris van Doorn. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Floris van Doorn, Clive Newstead -/ import algebra.homotopy_group .sphere open eq is_trunc trunc_index pointed algebra trunc nat is_conn fiber pointed namespace is_trunc -- Lem...
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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, Kyle Miller, Mario Carneiro -/ import data.nat.gcd.basic import logic.function.iterate import data.finset.nat_antidiagonal import algebra.big_operators.basic import...
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namespace hidden universe u inductive eq {α : Type u} (a : α) : α → Prop | refl : eq a @[elab_as_eliminator] theorem subst {α : Type u} {a b : α} {P : α → Prop} (h₁ : eq a b) (h₂ : P a) : P b := eq.rec h₂ h₁ -- BEGIN theorem symm {α : Type u} {a b : α} (h : eq a b) : eq b a := subst h (eq.refl a) ...