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arxiv: 2606.19343 · v1 · pith:X553KU7Enew · submitted 2026-04-11 · 🧮 math.FA

Multiparameter C-semigroups and multiparameter C-cosine functions

classification 🧮 math.FA
keywords multiparametercosinefunctionssemigroupsresultsseveralabstractanalyze
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In this paper, we present several new results concerning multiparameter $C$-semigroups. We introduce and systematically analyze the class of multiparameter $C$-cosine functions, providing several new structural results and applications to abstract multiparameter Cauchy problems of first/second order in locally convex spaces. We also consider automatic extensions of multiparameter $C$-semigroups and multiparameter $C$-cosine functions.

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