Quantum torsors with fewer axioms

Details Quantum torsors with fewer axioms Quantum torsors with fewer axioms

2003-01-31

arxiv.org/abs/math/0302003v1

Mathematics

Quantum Algebra

7 pages

Scientific paper

We give a definition of a noncommutative torsor by a subset of the axioms
previously given by Grunspan. We show that noncommutative torsors are an
equivalent description of Hopf-Galois objects (without specifying the Hopf
algebra). In particular, this shows that the endomorphism of a torsor featuring
in Grunspan's definition is redundant.

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