[PHK_seminar] [Cohomology]Wednesday 20 May, Igor Khavkine

[Petr Somberg]

 This is just a gentle reminder of our seminar!

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> Cohomology in algebra, geometry, physics and statistics
> Wednesday, 20 May 2026 - 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: Igor  Khavkine, Institute of Mathematics of ASCR
> Title: Compatibility complex for the conformal-to-Einstein operator
> Abstract
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> The conformal-to-Einstein operator is a conformally invariant linear
> overdetermined differential operator whose non-vanishing solutions
> correspond to Einstein metrics within a conformal class. I will discuss
> the construction of a compatibility complex for this operator under
> natural genericity assumptions on the Weyl curvature in dimension $n\gt
> 4$, which implies at most one independent solution. The construction is
> based on a method I previously proposed in [arXiv:1805.03751], that
> generally applies to operators of finite type and leverages existing
> symmetries and geometric properties of the starting operator. (based on
> [arXiv:2602.08510] w/ Josef Šilhan, Masaryk University)
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> We shall open the seminar room and ZOOM meeting at 13.15 for coffee and
> close ZOOM at 15.30
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> Join Zoom Meeting
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> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09
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> Meeting ID:99598413922
> 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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>
> Cohomology in algebra, geometry, physics and statistics mailing list
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