Subgroups of quantum groups

We investigate the notion of a subgroup of a quantum group. We suggest a general definition, which takes into account the work that has been done for quantum homogeneous spaces. We further restrict our attention to reductive subgroups, where some faithful flatness conditions apply. Furthermore, we p...

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Veröffentlicht in:Quarterly journal of mathematics 2019-06, Vol.70 (2), p.509-533
1. Verfasser: Christodoulou, Georgia
Format: Artikel
Sprache:eng
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Zusammenfassung:We investigate the notion of a subgroup of a quantum group. We suggest a general definition, which takes into account the work that has been done for quantum homogeneous spaces. We further restrict our attention to reductive subgroups, where some faithful flatness conditions apply. Furthermore, we proceed with a categorical approach to the problem of finding quantum subgroups. We translate all existing results into the language of module and monoidal categories and give another characterization of the notion of a quantum subgroup.
ISSN:0033-5606
1464-3847
DOI:10.1093/qmath/hay054