[PHK_seminar] [Fwd: [Cohomology]Wednesday 23 Apr, Giles Gardam]

[Petr Somberg]

 This is just the gentle remainder of our seminar starting soon!

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     Cohomology in algebra, geometry, physics and statistics




         Wednesday, 23 April 2025 - 13:30 to 14:30

         Place: Institute of Mathematics of ASCR, Žitná 25, Praha 1,  ZOOM
meeting




         Speaker: Giles Gardam, University of Bonn

         Title: The Kaplansky conjectures



         Abstract


There is a series of four long-standing conjectures on group rings that
are attributed to Kaplansky. For example, the zero divisor conjecture
states that the group ring of a torsion-free group over a field has no
zero divisors. I will discuss what is known about these conjectures and my
disproof of the unit conjecture.
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We shall open the  ZOOM meeting at 13.15 for coffee and close it at 15:00


Join Zoom Meeting


https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU9


MeetingID:99598413922


Passcode:Galois




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On the   next   Wednesday   April 30,  Malkhaz Bakuradze, Iv.
Javakhishvili Tbilisi State University, shall continue his lecture  The
transfer and Symplectic Cobordism II

https://www.math.cas.cz/index.php/events/event/3887











          For more information see the seminar web page at

          https://www.math.cas.cz/index.php/events/seminar/16




         Cohomology in algebra, geometry, physics and statistics mailing list

         phk_seminar at math.cas.cz

         https://list.math.cas.cz/listinfo/phk_seminar@math.cas.cz





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