From khavkine at math.cas.cz  Fri Nov  1 00:14:40 2024
From: khavkine at math.cas.cz (Igor Khavkine)
Date: Fri, 1 Nov 2024 00:14:40 +0100
Subject: [PHK_seminar] =?utf-8?q?=5BCohomology=5DWednesday_30_Oct=2C_?=
 =?utf-8?b?xaB0xJtww6FuIEhvbHVi?=
In-Reply-To: <2388b5aac8cb9813d8b8f6cdae5bba80@math.cas.cz>
References: <2388b5aac8cb9813d8b8f6cdae5bba80@math.cas.cz>
Message-ID: <3ae4dca3-2aa4-4481-8a2d-e4c4bdeaf20d@math.cas.cz>

Dear All,

The video recording of the talk by ?t?p?n Holub from this week is now 
available on YouTube at

   https://youtu.be/mxosz4k2Z44

The slides and a copy of the demonstration Isabelle file are available from

   https://users.math.cas.cz/~hvle/PHK/HolubCombinatorics2024.pdf
   https://users.math.cas.cz/~hvle/PHK/PresentationWeb.thy

These links have also been recorded at the ResearchSeminars announcement

   https://researchseminars.org/talk/PHK-cohomology-seminar/112/

Best,

Igor

On 10/28/24 1:00 PM, sender of seminar announcement via phk_seminar wrote:
> Wednesday, 30 October 2024 - 13:30 to 14:30
> Place: Institute of Mathematics of ASCR, ?itn? 25, Praha 1, the blue 
> lecture room +ZOOM meeting
> 
> Speaker: ?t?p?n Holub, Charles University
> Title: Combinatorics on Words in Isabelle/HOL
> 
> Abstract
> 
> Wednesday, 27 November 2024 - 13:30 to 14:30 Institute of Mathematics of 
> ASCR, ?itn? 25, Praha 1, the blue lecture room + ZOOM meeting
> 
> The talk will present the ongoing project of formalization of 
> combinatorics on words in the computer proof assistant Isabelle/HOL. 
> Independently of the particular formalized topic, the talk will attempt 
> to serve as an introduction to Isabelle/HOL for beginners.
> 
> ?
> 
> ----------------------------------------------------------------------------------------------
> 
> We shall open the seminar room + ZOOM at 13.15 for coffee and close the 
> room at 15:00
> 
> 
> Join Zoom Meeting
> 
> 
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU 
> <https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09>9
> 
> 
> MeetingID:99598413922
> 
> Passcode:Galois
> 
> 
> 
> 
> 
> 
> 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 at math.cas.cz
> 
> 
> _______________________________________________
> phk_seminar mailing list
> phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar


From phk_seminar_announcement at math.cas.cz  Mon Nov  4 13:00:01 2024
From: phk_seminar_announcement at math.cas.cz (phk_seminar_announcement at math.cas.cz)
Date: Mon, 04 Nov 2024 12:00:01 +0000
Subject: [PHK_seminar] [Cohomology]Wednesday 6 Nov,  Zoran Skoda
Message-ID: <a55979fcf74061df390729632b704a9f@math.cas.cz>

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From somberg at karlin.mff.cuni.cz  Wed Nov  6 10:45:14 2024
From: somberg at karlin.mff.cuni.cz (Petr Somberg)
Date: Wed, 6 Nov 2024 10:45:14 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 6 Nov,  Zoran Skoda
In-Reply-To: <a55979fcf74061df390729632b704a9f@math.cas.cz>
References: <a55979fcf74061df390729632b704a9f@math.cas.cz>
Message-ID: <195.113.30.248.1051.5fca87e45f342308ca6b81c6fa171d5f.squirrel@webmail.karlin.mff.cuni.cz>

 The seminar for today is going to start soon!


> Cohomology in algebra, geometry, physics and statistics
> Wednesday, 6 November 2024 - 13:30 to 14:30
> Place: ZOOM meeting
>
>
> Speaker: Zoran Skoda, University of Zadar
> Title: Braiding phenomena in cyclic homology
> Abstract
>
>
> Unlike the case of Hochschild (co)homology and most other cohomology
> theories, the original constructions of cyclic (co)homology in 1980s did
> not have coefficients. In a variant, Hopf cyclic homology, the
> coefficients were discovered around 2000 as stable anti-Yetter--Drinfeld
> modules, reminding of Yetter--Drinfeld (YD) modules familiar from the
> center construction. Bressler observed that cyclic nerve of a groupoid is
> determined by the ordinary nerve of its inertia groupoid. Thus I
> conjectured in late 2002 that passing to the appropriate monoidal
> category of sheaves one could replace the (sheaves over) inertia by
> taking the monoidal center of the (sheaves over) original groupoid. This
> has been proved in 2004 in two variants, well known by Hinich on orbifold
> case and another by me. As monoidal center involves braiding, it pointed
> that requiring or adding braidings can provide examples of cyclic
> homology with coefficients; I constructed some toy examples using
> standard resolutions and Bohm, Stefan and others independently much more
> realistic examples using distributive laws. It fits also with work of
> Kaledin who introduced new kind of traces to treat coefficients. Kowalzig
> has recently also explained anti- for YD modules in the case of centers
> of certain bimodule categories. This talk is to outline motivations and
> my present picture of these braiding (or Yang--Baxter) phenomena in
> cyclic homology.
>
> ------------------------------------------------------------
>
>
> We shall open ZOOM at 13.15 for virtual coffee and close the room at
> 15:00
>
>
>
>
>
> Join Zoom Meeting
>
>
>
>
>
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU9
>
>
>
>
>
> MeetingID:99598413922
>
>
>
>
>
> Passcode:Galois
>
>
>
> 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 at math.cas.cz
> _______________________________________________
> phk_seminar mailing list phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar
>
>



From phk_seminar_announcement at math.cas.cz  Mon Nov 11 13:00:02 2024
From: phk_seminar_announcement at math.cas.cz (phk_seminar_announcement at math.cas.cz)
Date: Mon, 11 Nov 2024 12:00:02 +0000
Subject: [PHK_seminar] [Cohomology]Wednesday 13 Nov,  Yaroslav  Bazaikin
Message-ID: <2a82eef8dd028a09dbb94245dc5ce795@math.cas.cz>

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From somberg at karlin.mff.cuni.cz  Wed Nov 13 11:15:44 2024
From: somberg at karlin.mff.cuni.cz (Petr Somberg)
Date: Wed, 13 Nov 2024 11:15:44 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 13 Nov, Yaroslav  Bazaikin
In-Reply-To: <2a82eef8dd028a09dbb94245dc5ce795@math.cas.cz>
References: <2a82eef8dd028a09dbb94245dc5ce795@math.cas.cz>
Message-ID: <195.113.30.248.1051.81d77611e7cf5ef90abc91f8f02c76e6.squirrel@webmail.karlin.mff.cuni.cz>


 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, ?itn? 25, Praha 1, the  blue
> lecture  room  + ZOOM meeting
>
> Speaker: Yaroslav  Bazaikin, Jan Evangelista Purkyn? University in ?st?
> nad Labem Title: On Chern-Losik class for codimension two foliations
> Abstract
>
>
> 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.
>
>
>
>
>
> The results were obtained jointly with Anton Galaev and Yuri Efremenko.
>
>
> ------------------------------------------------------------------------
> We shall open the seminar room + ZOOM at 13.15 for virtual coffee and
> close the room at 15:00
>
>
> Join Zoom Meeting
>
>
>
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU9
>
>
>
> MeetingID:99598413922
>
>
>
> Passcode:Galois
>
>
>
>
>
>
> 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 at math.cas.cz
> _______________________________________________
> phk_seminar mailing list phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar
>
>



From phk_seminar_announcement at math.cas.cz  Mon Nov 18 13:00:01 2024
From: phk_seminar_announcement at math.cas.cz (phk_seminar_announcement at math.cas.cz)
Date: Mon, 18 Nov 2024 12:00:01 +0000
Subject: [PHK_seminar] [Cohomology]Wednesday 20 Nov,  Anton Galaev
Message-ID: <eb7a3752864d67328585a0b4189813b9@math.cas.cz>

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From khavkine at math.cas.cz  Mon Nov 18 16:40:39 2024
From: khavkine at math.cas.cz (Igor Khavkine)
Date: Mon, 18 Nov 2024 16:40:39 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 13 Nov, Yaroslav Bazaikin
In-Reply-To: <2a82eef8dd028a09dbb94245dc5ce795@math.cas.cz>
References: <2a82eef8dd028a09dbb94245dc5ce795@math.cas.cz>
Message-ID: <a5e7647f-989d-4197-bf04-c3ff7e0e22fd@math.cas.cz>

Dear All,

The video recording of the talk by Yaroslav Bazaikin from last week is 
now available on YouTube at

   https://youtu.be/GyH_qBrlFNg

The slides are available from

   https://users.math.cas.cz/~hvle/PHK/Bazaikin2024.pdf

These links have also been recorded at the ResearchSeminars announcement

   https://researchseminars.org/talk/PHK-cohomology-seminar/114/

Best,

Igor

On 11/11/24 1:00 PM, sender of seminar announcement via phk_seminar wrote:
> Wednesday, 13 November 2024 - 13:30 to 14:30
> Place: Institute of Mathematics of ASCR, ?itn? 25, Praha 1, the blue 
> lecture room + ZOOM meeting
> 
> Speaker: Yaroslav Bazaikin, Jan Evangelista Purkyn? University in ?st? 
> nad Labem
> Title: On Chern-Losik class for codimension two foliations
> 
> Abstract
> 
> 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.
> 
> 
> The results were obtained jointly with Anton Galaev and Yuri Efremenko.
> 
> ------------------------------------------------------------------------
> 
> We shall open the seminar room + ZOOM at 13.15 for virtual coffee and 
> close the room at 15:00
> 
> 
> Join Zoom Meeting
> 
> 
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU 
> <https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09>9
> 
> 
> MeetingID:99598413922
> 
> 
> Passcode:Galois
> 
> 
> 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 at math.cas.cz
> 
> 
> _______________________________________________
> phk_seminar mailing list
> phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar


From somberg at karlin.mff.cuni.cz  Wed Nov 20 10:59:20 2024
From: somberg at karlin.mff.cuni.cz (Petr Somberg)
Date: Wed, 20 Nov 2024 10:59:20 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 20 Nov,  Anton Galaev
In-Reply-To: <eb7a3752864d67328585a0b4189813b9@math.cas.cz>
References: <eb7a3752864d67328585a0b4189813b9@math.cas.cz>
Message-ID: <195.113.30.248.1051.a9ede3f4a4e95057636f4e0675cb23e7.squirrel@webmail.karlin.mff.cuni.cz>


 This is just the remainder that our seminar is going to start rather soon!

> Cohomology in algebra, geometry, physics and statistics
> Wednesday, 20 November 2024 - 13:30 to 14:30
> Place: ZOOM  meeting
>
>
> Speaker: Anton Galaev, University  of Hradec Kralove
> Title: Conformally homogeneous Lorentzian spaces
> Abstract
>
>
> This is a joint work with Dmitri Alekseevsky. We prove that if a simply
> connected non-conformally flat conformal Lorentzian manifold (M,c) admits
> an essential transitive group of conformal transformations, then there
> exists a metric g?c such that (M,g) is a complete homogeneous plane wave.
> We also prove that the group of conformal transformations of a
> non-conformally flat simply connected homogeneous plane wave (M,g)
> consists of homotheties, hence it is a 1-dimensional extension of the
> group of isometries.
>
>
>
>
> --------------------------------------------------------------
>
>
> We shall open the ZOOM at 13.15 for coffee and close the room at 15:00
>
>
>
>
>
> Join Zoom Meeting
>
>
>
>
>
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU9
>
>
>
>
>
> MeetingID:99598413922
>
>
>
>
>
> Passcode:Galois
>
>
>
> 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 at math.cas.cz
> _______________________________________________
> phk_seminar mailing list phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar
>
>



From khavkine at math.cas.cz  Mon Nov 25 01:38:27 2024
From: khavkine at math.cas.cz (Igor Khavkine)
Date: Mon, 25 Nov 2024 01:38:27 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 20 Nov, Anton Galaev
In-Reply-To: <eb7a3752864d67328585a0b4189813b9@math.cas.cz>
References: <eb7a3752864d67328585a0b4189813b9@math.cas.cz>
Message-ID: <0096ac2d-7209-4e4d-b1b2-d5252130a6d2@math.cas.cz>

Dear All,

The video recording of the talk by Anton Galaev from last week is now 
available on YouTube at

   https://youtu.be/H22vO0RaFcs

The slides are available from

  
https://users.math.cas.cz/~hvle/PHK/Galaev_conformally_homogeneous_2024.pdf

These links have also been recorded at the ResearchSeminars announcement

   https://researchseminars.org/talk/PHK-cohomology-seminar/115/

Best,

Igor

On 11/18/24 1:00 PM, sender of seminar announcement via phk_seminar wrote:
> Wednesday, 20 November 2024 - 13:30 to 14:30
> Place: ZOOM meeting
> 
> Speaker: Anton Galaev, University of Hradec Kralove
> Title: Conformally homogeneous Lorentzian spaces
> 
> Abstract
> 
> This is a joint work with Dmitri Alekseevsky.?We prove that if a simply 
> connected non-conformally flat conformal Lorentzian manifold (M,c) 
> admits an essential transitive group of conformal transformations, then 
> there exists a metric g?c such that (M,g) is a complete homogeneous 
> plane wave. We also prove that the group of conformal transformations of 
> a non-conformally flat simply connected homogeneous plane wave (M,g) 
> consists of homotheties, hence it is a 1-dimensional extension of the 
> group of isometries.
> 
> 
> --------------------------------------------------------------
> 
> We shall open the ZOOM at 13.15 for coffee and close the room at 15:00
> 
> 
> Join Zoom Meeting
> 
> 
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU 
> <https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09>9
> 
> 
> MeetingID:99598413922
> 
> 
> Passcode:Galois
> 
> 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 at math.cas.cz
> 
> 
> _______________________________________________
> phk_seminar mailing list
> phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar


From phk_seminar_announcement at math.cas.cz  Mon Nov 25 13:00:01 2024
From: phk_seminar_announcement at math.cas.cz (phk_seminar_announcement at math.cas.cz)
Date: Mon, 25 Nov 2024 12:00:01 +0000
Subject: [PHK_seminar] [Cohomology]Wednesday 27 Nov,  Pedro H. Carvalho
Message-ID: <b029f1a792d58f634ec8abf0e98b6f60@math.cas.cz>

An HTML attachment was scrubbed...
URL: <http://list.math.cas.cz/pipermail/phk_seminar/attachments/20241125/f66705c3/attachment.html>

From hvle at math.cas.cz  Wed Nov 27 10:54:01 2024
From: hvle at math.cas.cz (hvle)
Date: Wed, 27 Nov 2024 10:54:01 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 27 Nov,  Pedro H. Carvalho
In-Reply-To: <b029f1a792d58f634ec8abf0e98b6f60@math.cas.cz>
References: <b029f1a792d58f634ec8abf0e98b6f60@math.cas.cz>
Message-ID: <acfff7233d39e72e8863afa0de16214e@math.cas.cz>

Dear  All,


  Our seminar today shall take place at the library   and not at Konirna

at the usual time!


Regards,

Van





On 2024-11-25 13:00, sender of seminar announcement via phk_seminar 
wrote:
> Wednesday, 27 November 2024 - 13:30 to 14:30
> Place: Institute of Mathematics of ASCR, ?itn? 25, Praha 1, the
> seminar room Konirka in the front building + ZOOM meeting
> 
>  Speaker: Pedro H. Carvalho, University of Hradec Kralove
> Title: Homological reduction of Poisson structures
> 
>  Abstract
> From Roytenberg-?evera, we know that Poisson manifolds are in
> one-to-one correspondence with symplectic NQ-manifolds of degree one.
> Cattaneo-Zambon further extended this relation to the level of
> reduction with their graded geometric approach to Poisson reduction.
> Based on these ideas, we explain how homotopy Poisson structures may
> arise as homological models for Poisson reduced spaces obtained from
> more general reduction setups. Our results extend the classical
> homological formulation of hamiltonian reduction of symplectic and
> Poisson manifolds due to Kostant-Sternberg and Stasheff.
> 
> --------------------------------------------------------------
> 
> We shall open the seminar room+ ZOOM at 13.15 for coffee and close the
> room at 15:00
> 
> Join Zoom Meeting
> 
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU
> [1]9
> 
> MeetingID:99598413922
> 
> Passcode:Galois
> 
>  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 at math.cas.cz
> 
> Links:
> ------
> [1] 
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09
> _______________________________________________
> phk_seminar mailing list
> phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar

From somberg at karlin.mff.cuni.cz  Wed Nov 27 11:48:21 2024
From: somberg at karlin.mff.cuni.cz (Petr Somberg)
Date: Wed, 27 Nov 2024 11:48:21 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 27 Nov,  Pedro H. Carvalho
In-Reply-To: <b029f1a792d58f634ec8abf0e98b6f60@math.cas.cz>
References: <b029f1a792d58f634ec8abf0e98b6f60@math.cas.cz>
Message-ID: <195.113.30.248.1051.c477891af96ab104f71e83660ec38e19.squirrel@webmail.karlin.mff.cuni.cz>


 This is just a remainded of our seminar for today, which
exceptionally takes its present form in the library (and
not in Konirna as usual!)

==========================================================================

> Cohomology in algebra, geometry, physics and statistics
> Wednesday, 27 November 2024 - 13:30 to 14:30
> Place: Institute of Mathematics of ASCR, ?itn? 25, Praha 1,  the seminar
> room Konirka in  the front building + ZOOM  meeting
>
> Speaker: Pedro H. Carvalho, University  of Hradec Kralove
> Title: Homological reduction of Poisson structures
> Abstract
>
>
> From Roytenberg-?evera, we know that Poisson manifolds are in one-to-one
> correspondence with symplectic NQ-manifolds of degree one.
> Cattaneo-Zambon further extended this relation to the level of reduction
> with their graded geometric approach to Poisson reduction. Based on these
> ideas, we explain how homotopy Poisson structures may arise as
> homological models for Poisson reduced spaces obtained from more general
> reduction setups. Our results extend the classical homological
> formulation of hamiltonian reduction of symplectic and Poisson manifolds
> due to Kostant-Sternberg and Stasheff.
> --------------------------------------------------------------
> We shall open the seminar room+ ZOOM at 13.15 for coffee and close the
> room at 15:00
>
>
> Join Zoom Meeting
>
>
>
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU9
>
>
>
> MeetingID:99598413922
>
>
>
> Passcode:Galois
>
>
>
>
>
>
>
>
>
> 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 at math.cas.cz
> _______________________________________________
> phk_seminar mailing list phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar
>
>



From somberg at karlin.mff.cuni.cz  Wed Nov 27 12:10:46 2024
From: somberg at karlin.mff.cuni.cz (Petr Somberg)
Date: Wed, 27 Nov 2024 12:10:46 +0100
Subject: [PHK_seminar] [Cohomology]Wednesday 27 Nov, Pedro H. Carvalho]
Message-ID: <195.113.30.248.1051.3ec99846e0f67aaf48f57d11480fcfc6.squirrel@webmail.karlin.mff.cuni.cz>


 There is last minute change - the seminar will take place
in the seminar room on the third floor in the front building
of the Math. Institute.

>
> This is just a remainded of our seminar for today, which
>exceptionally takes its present form in the library (and
>not in Konirna as usual!)
>
>==========================================================================
>
>> Cohomology in algebra, geometry, physics and statistics
>> Wednesday, 27 November 2024 - 13:30 to 14:30
>> Place: Institute of Mathematics of ASCR, ?itn? 25, Praha 1,  the seminar
>> room Konirka in  the front building + ZOOM  meeting
>>
>> Speaker: Pedro H. Carvalho, University  of Hradec Kralove
>> Title: Homological reduction of Poisson structures
>> Abstract
>>
>>
>> From Roytenberg-?evera, we know that Poisson manifolds are in one-to-one
>> correspondence with symplectic NQ-manifolds of degree one.
>> Cattaneo-Zambon further extended this relation to the level of reduction
>> with their graded geometric approach to Poisson reduction. Based on these
>> ideas, we explain how homotopy Poisson structures may arise as
>> homological models for Poisson reduced spaces obtained from more general
>> reduction setups. Our results extend the classical homological
>> formulation of hamiltonian reduction of symplectic and Poisson manifolds
>> due to Kostant-Sternberg and Stasheff.
>> --------------------------------------------------------------
>> We shall open the seminar room+ ZOOM at 13.15 for coffee and close the
>> room at 15:00
>>
>>
>> Join Zoom Meeting
>>
>>
>>
>> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU9
>>
>>
>>
>> MeetingID:99598413922
>>
>>
>>
>> Passcode:Galois
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> 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 at math.cas.cz
>> _______________________________________________
>> phk_seminar mailing list phk_seminar at math.cas.cz
>> https://list.math.cas.cz/listinfo/phk_seminar
>>
>>
>
>
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