[PHK_seminar] [Cohomology]Wednesday 4 Mar, Andrey Krutov

[Igor Khavkine]

Dear All,

The video recording of the recent talk by Andrey Krutov is now available 
on YouTube at

   https://youtu.be/pUBbQbkjKM8

Apologies for minor audio problems during recording.

The link has also been recorded at the ResearchSeminars announcement

   https://researchseminars.org/talk/PHK-cohomology-seminar/149/

Best,

Igor

On 3/2/26 1:00 PM, sender of seminar announcement via phk_seminar wrote:
> Wednesday, 4 March 2026 - 13:30 to 14:30
> Place: Institute of Mathematics of ASCR, Žitná 25, Praha 1, the blue 
> lecture room +ZOOM meeting
> 
> Speaker: Andrey Krutov, Mathematical Institute, Charles University
> Title: Non-integrable distributions with simple infinite-dimensional Lie 
> superalgebra of symmetries
> 
> Abstract
> 
> The only simple infinite-dimensional Lie algebras preserving a non- 
> integrable distribution are the algebras of contact vector fields in odd 
> dimensions. We formulate analogs of the above statement and prove them 
> for (super)varieties over algebraically closed fields of any 
> characteristic $p\geq0$.
> 
> 
> Over fields~$\mathbb{K}$ of characteristic $p>0$, we classify the 
> Weisfeiler gradings (briefly: W-gradings), those corresponding to a 
> maximal subalgebra of finite codimension, of the known simple vectorial 
> Lie (super)algebras with unconstrained shearing vector of heights of the 
> indeterminates, distinguish W-gradings of (super)algebras preserving 
> non-integrable distributions.
> 
> 
> Join work with D. Leites and I. Shchepochkina (arXiv:2309.16370)
> 
> ----------------------------------------------------
> 
> We shall open the seminar room and ZOOM meeting at 13.15 for (virtual) 
> coffee and close ZOOM at 15.00
> 
> 
> Join Zoom Meeting
> 
> 
> https://cesnet.zoom.us/j/99598413922? 
> pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09 <https://cesnet.zoom.us/ 
> j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09>
> 
> 
> Meeting ID:99598413922
> 
> Passcode:Galois
> 
> --------------------------------------------------------------------
> 
> 
> On Wednesday March 11 Russell Avdek shall give a lecture on Numerical 
> invariants of contact manifolds and their divisors <https:// 
> www.math.cas.cz/index.php/events/event/4130>
> 
> 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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