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SUMMARY:Giles Gardam (University of Bonn)
DTSTART:20250423T113000Z
DTEND:20250423T123000Z
DTSTAMP:20260502T045031Z
UID:PHK-cohomology-seminar/130
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/PHK-cohomolo
 gy-seminar/130/">The Kaplansky conjectures</a>\nby Giles Gardam (Universit
 y of Bonn) as part of Prague-Hradec Kralove seminar Cohomology in algebra\
 , geometry\, physics and statistics\n\n\nAbstract\nThere is a series of fo
 ur long-standing conjectures on group rings that are attributed to Kaplans
 ky. For example\, the zero divisor conjecture states that the group ring o
 f a torsion-free group over a field has no zero divisors. I will discuss w
 hat is known about these conjectures and my disproof of the unit conjectur
 e.\n
LOCATION:https://researchseminars.org/talk/PHK-cohomology-seminar/130/
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