On the homotopical classification of DJ-mappings of infnitely dimensional spheres

DOI10.4064/fm-120-2-143-149zbMath0556.55001OpenAlexW1193012265MaRDI QIDQ3219460

Bogdan Przeradzki

Publication date: 1984

Published in: Fundamenta Mathematicae (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/211461

zbMATH Keywords

Leray-Schauder degreeinfinite dimensional Hilbert spaceDJ-homotopy classes of DJ-mappings

Mathematics Subject Classification ID

Fixed-point theorems (47H10) Degree, winding number (55M25) Fixed-point theorems on manifolds (58C30) Inner product spaces and their generalizations, Hilbert spaces (46C99) Topology of infinite-dimensional manifolds (57N20) Homotopy and topological questions for infinite-dimensional manifolds (58B05) Homotopy groups of special types (55Q70)

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