clarified proven results: store thm only and retrieve proof later via Thm.proof_of (this may also impact parallelism, because internal join_proofs is deferred);
clarified proven results: store thm only and retrieve proof later via Thm.proof_of (this may also impact parallelism, because internal join_proofs is deferred);

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle