On equivalent conditions to quasi-perfectness of abelian *-semigroups

Autores: Nobuhisa Sakakibara
Localización: Collectanea mathematica, ISSN 0010-0757, Vol. 55, Fasc. 3, 2004, págs. 261-268
Idioma: inglés
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Resumen
- Let $S$ be an abelian $\ast$-semigroup. In this paper, we prove some equivalent conditions for that every positive definite function is a moment function on $S + S + S$ with a unique representing measure on the set of characters on $S$.