Note on Centrally Extended su(2/2) and Serre Relations
arXiv:0903.0511 · doi:10.1002/prop.200900052
Abstract
We point out that the nontrivial central extension of the superalgebra $su(2/2)$ is related to the some not so well-known Serre relations.
6 pages, LATEX, v2: added references; v3: small changes and added reference