|Maintainer||Benedikt Schmidt <email@example.com>|
Subsumption of terms and substitutions.
t2 with respect to the subsumption order modulo AC.
Returns True if
s2 are equal with respect to the subsumption order modulo AC.
Canonical representations for substitutions
Returns a substitution that is equivalent modulo renaming to the given substitution.
for testing only
Returns the variables occuring in
t together with the contexts they appear in.
Note that certain contexts (and variables only occuring in such contexts) are
ignored by this function.
The function is used to guess renamings of variables, i.e., if t is a renaming of s,
then variables that occur in equal contexts in t and s are probably renamings of