check_conv now only performs beta-eta-normalization when equations cannot be combined just by transitivity.
check_conv now only performs beta-eta-normalization when equations
cannot be combined just by transitivity.

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