GEN_TYVARIFY : thm -> thm
STRUCTURE
SYNOPSIS
Replace a theorem’s type variables with fresh versions
DESCRIPTION
A call to GEN_TYVARIFY th replaces (with INST_TYPE) the type variables occurring in theorem th’s conclusion that do not also appear in any of th’s hypotheses. The new type variables are generated by successive calls to gen_tyvar, so should not have been seen before.
FAILURE
Never fails.
COMMENTS
The derived rule FULL_GEN_TYVARIFY will instantiate all of a theorem’s type variables, whether or not they appear in the hypotheses.
SEEALSO
HOL  Trindemossen-1