HOPF HEAPS AND HOPF ALGEBRAS OF TRANSLATIONS

Speaker(s)

TOMASZ BRZEZIŃSKI

Affiliation

Prifysgol Abertawe, Cymru

Date

April 17, 2024, 5:15 p.m.

Link

https://uw-edu-pl.zoom.us/j/95105055663?pwd=TTIvVkxmMndhaHpqMFUrdm8xbzlHdz09

Information about the event

405 IMPAN & ZOOM

Seminar

North Atlantic Noncommutative Geometry Seminar

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Grunspan and Schauenburg have proven that quantum torsors (introduced by the former) are closely connected with Hopf-Galois objects. In this talk, I will present, in part, the dualisation of this connection and, in part, a new characterisation of quantum cotorsors, or Hopf heaps, in terms of Galois-type actions of the associated translation Hopf algebras (not available in the dual setup). The talk is based on a joint work with Małgorzata Hryniewicka.

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