Difference between let and have keywords in lean 4...

Mathlib keeps rebuilding even after I `lake exe cache get`...

Lean4 Coercion between Nat/ Fin3/Fin9 with simp tactic pass the proof of 0=2...

How to Construct a Term Proof for an Existential (moved to -- 'Proof Assistants Beta')...

Lean 4: Agda user struggling to understand Lean's equality type, type mismatch, not reducing...

Lean4 lambda calculus DSL macro...

How to use the summation sign in lean?...

while_true_nonterm in Lean4...

Negation as a Conclusion from And.Intro and Or.Elim...

Categories in Lean4...

Lean4 string interpolation: Possible to format as hex?...

Composing dependent functions in Lean...

Associated types in Lean...

LEAN 4: Apparent Contradiction re Arguments that may be referenced by 'match'...

Why does this typecheck in Lean?...

Non-empty list examples from "Functional Programming in Lean" produce error: unsolved goal...

Simple dependent type example in lean4...

How to prove mathematical induction formulae in LEAN theorem prover?...

How to define mutual inductive propositions in Lean?...

How to include special characters like ≅ into "UnexpandM Syntax" syntax quotations?...

Creating a macro/elab which converts a new identifier into two existing identifiers...

confusion over meaning of underscore `_` in simple Lean example...

How to define free monads and cofree comonads in Lean4?...

Use obtain in tactic mode in Lean theorem prover...

Output of #check Nat.add...

How to change current working directory in Lean 4?...

How to do function composition in Lean 4?...

In Lean is there automatic detection of nearly identical definitions?...

How to prove a = b → a + 1 = b + 1 in lean?...

Leverage theorem in the reals for the natural numbers...