On representations of groups and algebras in spaces with indefinite metric

E. V. Kissin ; V. S. Shulman

Contemporary Mathematics. Fundamental Directions, Dedicated to the memory of Professor N. D. Kopachevsky, Tome 67 (2021) no. 2, pp. 295-315.

Résumé

The paper contains a survey of known results on the structure of $J$-symmetric operator algebras in Pontryagin and Krein spaces, as well as on representations of groups and *-algebras in these spaces.

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