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Transformation monoid minimisation
For every , the full transformation monoid is the set of (total) functions from to , equipped with the standard function composition. The symmetric group is the subroup of composed of all the permutations. What is the complexity of the following decision problems with respect to the parameter : Problem 1: Given a submonoid generated by two elements, does there exist an integer smaller than such that can be embedded in ? Problem 2: Given a subgroup generated by two elements, does there exist an integer smaller than such that can be embedded in ?
