[PHK_seminar] [Cohomology]Wednesday 13 Nov, Yaroslav Bazaikin

[Petr Somberg]

 This is just a remainder of our seminar starting soon!

> Cohomology in algebra, geometry, physics and statistics
> Wednesday, 13 November 2024 - 13:30 to 14:30
> Place: Institute of Mathematics of ASCR, Žitná 25, Praha 1, the  blue
> lecture  room  + ZOOM meeting
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> Speaker: Yaroslav  Bazaikin, Jan Evangelista Purkyně University in Ústí
> nad Labem Title: On Chern-Losik class for codimension two foliations
> Abstract
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> Losik classes generalize characteristic classes of foliations using
> Gelfand-Fuchs cohomology approach. The Chern-Losik class for foliations
> of codimension one was constructed by Losik, and he also showed the
> non-triviality of this class for a foliation with two leaves with a
> hyperbolic holonomy group. In the talk the construction of the
> Chern-Losik class to foliations of arbitrary codimension is done. The
> non-triviality of the Chern-Losik class of codimension two foliations is
> investigated. Examples of codimension two foliations with nontrivial
> Chern-Losik class are constructed.
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> The results were obtained jointly with Anton Galaev and Yuri Efremenko.
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> We shall open the seminar room + ZOOM at 13.15 for virtual coffee and
> close the room at 15:00
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> Join Zoom Meeting
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> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU9
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> MeetingID:99598413922
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> Passcode:Galois
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> For more information see the seminar web page at
> https://www.math.cas.cz/index.php/events/seminar/16
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