Remarks on central extensions of the Galilei group in 2+1 dimensions

1995/08/28 by Y. Brihaye, Brihaye, Y., S. Giller +5
Mathematics · #FOS: Mathematics #Quantum Algebra (math.QA) #math.QA #q-alg

paper · pdf · doi:10.48550/arxiv.q-alg/9508020

15 pages,amstex

arxiv created 1995/08/28 · arxiv updated 2009/11/30

Abstract

Some properties of central extensions of 2+1 dimensional Galilei group are discussed. It is shown that certain families of extensions are isomorphic. An interpretation of new nontrivial cocycle is offered. A few bibliographical remarks are included.

Related

• On the isomorphism problem for central extensions II
• A central U(1)-extension of a double Lie groupoid
• On the isomorphism problem for central extensions I
• Hopf-Galois extensions with central invariants
• Notes on Central Extensions