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SUMMARY:Sang-Gyun Youn (Seoul National University\, South Korea)
DTSTART:20250331T080000Z
DTEND:20250331T090000Z
DTSTAMP:20260422T180705Z
UID:QGS/128
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/QGS/128/">A 
 Khintchine inequality for central Fourier series on non-Kac compact quantu
 m groups</a>\nby Sang-Gyun Youn (Seoul National University\, South Korea) 
 as part of Quantum Groups Seminar [QGS]\n\n\nAbstract\nThe study of Khintc
 hine inequalities has a long history in abstract harmonic analysis. While 
 there is almost no possibility of non-trivial Khintchine inequality for ce
 ntral Fourier series on compact connected semisimple Lie groups\, it has t
 urned out that a strong contrast holds within the framework of compact qua
 ntum groups. Specifically\, a Khintchine inequality with operator coeffici
 ents is proved for arbitrary central Fourier series in a large class of no
 n-Kac compact quantum groups. The main examples include the Drinfeld-Jimbo
  q-deformations\, the free orthogonal quantum groups\, and the quantum aut
 omorphism groups.\n
LOCATION:https://researchseminars.org/talk/QGS/128/
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