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PRODID:Mathematics Seminar Calendar
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UID:20230203T140141-31559@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY: From homotopy Lie brackets to thick morphisms of supermanifolds and non-linear functional-algebraic duality (NOTE UNUSUAL DAY)
DESCRIPTION:Speaker\: Theodore Voronov, University of Manchester\r\n I will give a motivation for homotopy Lie brackets and the corresponding morphisms preserving brackets "up to homotopy" (more precisely, for L-infinity morphisms and L-infinity algebras), and show how to describe them using supergeometry. So, instead of a single Poisson or Lie bracket, there is a whole sequence of operations with n arguments, n=1,2,3,..., satisfying a linked infinite sequence of identities replacing the familiar Jacobi identity for a Lie bracket; and, instead of a morphism as a linear map mapping a bracket to a bracket, there is a sequence of multi-linear mappings mixing brackets with different numbers of arguments, and, in particular, the binary bracket is preserved only up to an (algebraic) homotopy. Geometrically, such a sequence of multi-linear mappings assembles into one non-linear map of supermanifolds.\r\n\r\nFor the case of homotopy brackets of functions ("higher Poisson" or "homotopy Poisson" structure), this leads us to the question about a natural construction of non-linear mappings between algebras of smooth functions generalizing the usual pull-backs. I discovered such a construction some years ago. These are "thick morphisms" of (super)manifolds generalizing ordinary smooth maps. From a more general perspective, we arrive in this way at a non-linear analog of the classical functional-algebraic duality between spaces and algebras.
LOCATION:C204A Wells Hall
DTSTART:20230131T200000Z
DTEND:20230131T210000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=31559
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BEGIN:VEVENT
UID:20230203T140141-31523@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY:Derived cycles on Shimura varieties
DESCRIPTION:Speaker\: Keerthi Madapusi Pera, Boston College\r\nI’ll explain how methods from derived algebraic geometry can be applied to give a uniform definition of special cycle classes on integral models of Shimura varieties of Hodge type, verifying some consequences of Kudla’s conjectures on the modularity of generating series of cycles on Shimura varieties of Hermitian type.
LOCATION:C304 Wells Hall
DTSTART:20230213T200000Z
DTEND:20230213T210000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=31523
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BEGIN:VEVENT
UID:20230203T140141-31532@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Michail Savvas, University of Texas\r\n
LOCATION:C304 Wells Hall
DTSTART:20230227T200000Z
DTEND:20230227T210000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=31532
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BEGIN:VEVENT
UID:20230203T140141-30471@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Ivan Loseu, Yale University\r\n
LOCATION:C304 Wells Hall
DTSTART:20230313T190000Z
DTEND:20230313T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=30471
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BEGIN:VEVENT
UID:20230203T140141-31526@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY:TBA
DESCRIPTION:Speaker\: John Sheridan, Princeton University\r\n
LOCATION:C304 Wells Hall
DTSTART:20230320T190000Z
DTEND:20230320T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=31526
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BEGIN:VEVENT
UID:20230203T140141-31545@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Olivier Martin, Stony Brook University\r\n
LOCATION:C304 Wells Hall
DTSTART:20230417T190000Z
DTEND:20230417T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=31545
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BEGIN:VEVENT
UID:20230203T140141-31505@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY:TBA (note unusual day)
DESCRIPTION:Speaker\: Jaclyn Lang, Temple\r\n
LOCATION:C304 Wells Hall
DTSTART:20230421T190000Z
DTEND:20230421T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=31505
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BEGIN:VEVENT
UID:20230203T140141-29398@math.msu.edu
DTSTAMP:20230203T140141Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Ján Mináč, University of Western Ontario\r\n
LOCATION:Online (virtual meeting)
DTSTART:20230424T190000Z
DTEND:20230424T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=29398
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