1303.6272 (Dan Solomon)

A Comment on the calculation of the Lie algebra cocycle in the book Loop
Groups    [PDF]

Dan Solomon

An expression for the Lie algebra cocycle corresponding to the central extension of the group GLres(H) is derived in the book Loop Groups [1]. It will be shown in this paper that some of the terms in this expression are ambiguous and in order to be evaluated correctly the trace operation must be properly defined.

View original: http://arxiv.org/abs/1303.6272