A characterization of real matrix semigroups.

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Nimeke: A characterization of real matrix semigroups.
Tekijät: Bauer, Benedict1 (AUTHOR) benedict.bauer@univie.ac.at, Gerhold, Stefan2 (AUTHOR)
Lähde: Research in Mathematics. Jan2024, Vol. 11 Issue 1, p1-10. 10p.
Asiasanat: *MATRIX exponential, *MATRIX decomposition, *FUNCTIONAL equations, *MARKOV processes, *GAUSSIAN processes
Abstrakti: We characterize all real matrix semigroups, indexed by the non-negative reals, which satisfy a mild boundedness assumption, without assuming continuity. Besides the continuous solutions of the semigroup functional equation, we give a description of solutions arising from non-measurable solutions of Cauchy's functional equation. To do so, we discuss the primary decomposition and the Jordan—Chevalley decomposition of a matrix semigroup. Our motivation stems from a characterization of all multi-dimensional self-similar Gaussian Markov processes, which is given in a companion paper. [ABSTRACT FROM AUTHOR]
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ISSN:27684830
DOI:10.1080/27684830.2023.2289203