Kd and B-comod generates B*k[d]-comod?

Let B be a k-bialgebra (associative, coassociative, unitary and counitary) and g an indeterminate. Denote B*k[g] the free product of the k-algebras B and k[d]. Declare g to be group-like, so that...

09 September 2017 5,127 0 View