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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 1995 Volume 186, Number 9, Pages 87–96 (Mi sm69)

Exotic groups and quotients of loop groups

S. V. Lyudkovskii

General Physics Institute named after A. M. Prokhorov, Russian Academy of Sciences

Abstract: A study is made of various category-theoretic properties of exotic groups. Exotic groups that are non-commutative and non-metrizable are constructed for the first time. A proof is given of a theorem on the construction of exotic groups by means of groups of continuous maps (or maps of smoothness $r<\infty$) from a real complete space (respectively, a locally compact manifold) to a locally compact group (respectively, a Lie group) via factorization. It is shown that quotients of loop groups or generalized loop groups with respect to their closed normal subgroups are either commutative exotic groups, or else non-exotic groups.

UDC: 512.546+517.986

MSC: Primary 22A10; Secondary 22D10, 22E65

Received: 18.05.1993


 English version:
Sbornik: Mathematics, 1995, 186:9, 1313–1323

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© Steklov Math. Inst. of RAS, 2026