chris questions

chris answers

• Taming meta implication in Isar proofs
• Haskell Writing myLength
• isabelle proving commutativity for add
• What rule does 'apply (rule)' or 'proof' use?
• Using "find_theorems" in Isabelle
• parsec using between to parse parens
• How to hide defined constants
• Is there a way to prove a program has no bug?
• How to replace ⋀ and ⟹ with ∀ and ⟶ in assumption
• Isabelle: Sledgehammer finds a proof but it fails