Termination proof in Isabelle...

Isabelle/Pure Isabelle/HOL Isabell/Isar conceptual questions...

Type Unification failed for bool * bool ⇒ bool * bool...

What does it mean for a fact used in Isabelle to have a number after the name?...

Certified calculations in a proof assistant...

Unification problem with HOL-style alpha-conversion in Coq (matching the equality)...

Isabelle structure proof...

How to introduce forall in Isabelle...

Isabelle labeled graph definition...

cases vs case_tac/induct vs induct_tac...

Specifying direction of rule in Isabelle/HOL...

Recursion in a lambda expression...

proving Predicate logic with Isabelle...

Is it possible to write non-automatic formalizations in Isar?...

HOL Theorem Prover: Adding to existing theory...

Translating from HOL interpreter to TAC_PROOF with THENL...

Theorem proving from first principles using SML with HOL inference rules...

Exception on ACCEPT_TAC after THEN in HOL...