Sequential conditions of integrability of Roumieu ultradistributions
arXiv:1910.14173
Abstract
We consider several general conditions for integrability of two Roumieu ultradistributions and prove their equivalence. The discussed sequential conditions are based on two classes of approximate units and allow one to introduce sequential defnitions of the convolution in the space of Roumieu ultradistributions, analogous to the known defnitions in the space of distributions.