2 papers
math.FA2016
Superposition in Modulation Spaces with Ultradifferentiable Weights
Maximilian Reich
In the theory of nonlinear partial differential equations we need to explain superposition operators. For modulation spaces equipped with particular ultradifferentiable weights thi…
math.FA2016
Multiplication and Composition in Weighted Modulation Spaces
Maximilian Reich, Winfried Sickel
We study the existence of the product of two weighted modulation spaces. For this purpose we discuss two different strategies. The more simple one allows transparent proofs in vari…