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arXiv · 2409.18141

Evolutionary integro-differential equations of scalar type on locally compact groups

Santiago Gómez Cobos·Joel E. Restrepo·Michael Ruzhansky
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Abstract

We study existence, uniqueness, norm estimates and asymptotic time behaviour (in some cases can be claimed to be sharp) for the solution of a general evolutionary integral (differential) equation of scalar type on a locally compact separable unimodular group $G$ governed by any positive left invariant operator (unbounded and either with discrete or continuous spectrum) on $G$. We complement our studies by proving some time-space (Strichartz type) estimates for the classical heat equation, and its time-fractional counterpart, as well as for the time-fractional wave equation. The latter estimates allow us to give some results about the well-posedness of nonlinear partial integro-differential equations. We provide many examples of the results by considering particular equations, operators and groups through the whole paper.

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Santiago Gómez Cobos, Joel E. Restrepo, Michael Ruzhansky. 2024-09-18. Evolutionary integro-differential equations of scalar type on locally compact groups. https://arxiv.org/abs/2409.18141

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