- Pontrjagin product
- Математика: понтрягинское произведение
Универсальный англо-русский словарь. Академик.ру. 2011.
Универсальный англо-русский словарь. Академик.ру. 2011.
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Representation theory — This article is about the theory of representations of algebraic structures by linear transformations and matrices. For the more general notion of representations throughout mathematics, see representation (mathematics). Representation theory is… … Wikipedia
Kreinräume — In der Funktionalanalysis ist ein Kreinraum (nach Mark Krein) ein Hilbertraum mit einer abgeschwächten Struktur: einem i.A. indefiniten inneren Produkt anstelle des üblichen Skalarprodukts. Eine genaue Definition findet sich weiter unten. In… … Deutsch Wikipedia
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Signature operator — Let X be a 4k dimensional compact Riemannian manifold. The signature operator is a elliptic differential operator defined on a subspace of the space of differential forms on X , whose analytic index is the same as the topological signature of the … Wikipedia
Kreinraum — In der Funktionalanalysis ist ein Kreinraum (nach Mark Krein) ein Hilbertraum mit einer abgeschwächten Struktur: einem i.A. indefiniten inneren Produkt anstelle des üblichen Skalarprodukts. Eine genaue Definition findet sich weiter unten. In… … Deutsch Wikipedia