Quantum line bundles via Cayley-Hamilton identity

Details Quantum line bundles via Cayley-Hamilton identity Quantum line bundles via Cayley-Hamilton identity

1999-11-18

arxiv.org/abs/math/9911140v2

Mathematics

Quantum Algebra

LaTex file, 21 pages, minor correction in Aknowledgement

Scientific paper

As was shown in \cite{GPS} the matrix $L=|| l_i^j||$ whose entries $l_i^j$ are generators of the so-called reflection equation algebra is subject to some polynomial identity looking like the Cayley-Hamilton identity for a numerical matrix. Here a similar statement is presented for a matrix whose entries are generators of a filtered algebra being a "non-commutative analogue" of the reflection equation algebra. In an appropriate limit we get a similar statement for the matrix formed by the generators of the algebra $U(gl(n))$. This property is used to introduce the notion of line bundles over quantum orbits in the spirit of the Serre-Swan approach. The quantum orbits in question are presented explicitly as some quotients of one of the mentioned above algebras both in the quasiclassical case (i.e. that related to the quantum group $U_q(sl(n))$) and a non-quasiclassical one (i.e. that arising from a Hecke symmetry with non-standard Poincar\'e series of the corresponding symmetric and skewsymmetric algebras).

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