Abstract
An irreducible criterion of the imaginary Verma modules for the twisted affine Nappi-Witten Lie algebra $\widetilde{H}_{4}[\sigma]$ is determined. For a (reducible) imaginary Verma module, explicit characterizations of the maximal submodule, imaginary vacuum vectors, and the composition structure are also given.
Funding Statement
Supported by China NSF grants 11801477, 11771281.
Citation
Xue CHEN. "Imaginary Verma modules for the twisted affine Nappi-Witten Lie algebra $\widetilde{H}_{4}[\sigma]$." Hokkaido Math. J. 50 (3) 327 - 344, October 2021. https://doi.org/10.14492/hokmj/2019-169
Information
