A quantum analog of the Poincare-Birkhoff-Witt theorem

Details A quantum analog of the Poincare-Birkhoff-Witt theorem A quantum analog of the Poincare-Birkhoff-Witt theorem

2000-05-10

arxiv.org/abs/math/0005101v1

Algebra and Logic, v.38, N4, July-August, 1999, 259-276.

Mathematics

Quantum Algebra

27 pages

Scientific paper

We reduce the basis construction problem for Hopf algebras generated by skew-primitive semi-invariants to a study of special elements, called ``super-letters,'' which are defined by Shirshov standard words. In this way we show that above Hopf algebras always have sets of PBW-generators (``hard'' super-letters). It is shown also that these Hopf algebras having not more than finitely many ``hard'' super-letters share some of the properties of universal enveloping algebras of finite-dimensional Lie algebras. The background for the proofs is the construction of a filtration such that the associated graded algebra is obtained by iterating the skew polynomials construction, possibly followed with factorization.

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