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BEGIN:VEVENT
SUMMARY:Sabrina Pauli (Universitetet i Oslo)
DTSTART:20200729T100000Z
DTEND:20200729T110000Z
DTSTAMP:20260416T144627Z
UID:MotivesAndWhatNot072020/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MotivesAndWh
 atNot072020/1/">Quadratic dynamic and excess intersection</a>\nby Sabrina 
 Pauli (Universitetet i Oslo) as part of Motives and What Not\n\n\nAbstract
 \nOne can view Fulton and MacPherson's intersection product of an excess i
 ntersection as a limit of proper intersections. In my talk I will introduc
 e a quadratic version of this dynamic process to compute excess intersecti
 ons in oriented Chow. As an application\, I will compute several Euler num
 bers valued in GW(k)\, for example the count of lines on a quintic threefo
 ld expressed as the sum of local contributions of the lines on the Fermat 
 quintic threefold that deform with a generic deformation.\n
LOCATION:https://researchseminars.org/talk/MotivesAndWhatNot072020/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Doosung Park (Universität Zürich)
DTSTART:20200729T113000Z
DTEND:20200729T123000Z
DTSTAMP:20260416T144627Z
UID:MotivesAndWhatNot072020/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MotivesAndWh
 atNot072020/2/">Triangulated categories of logarithmic motives over a fiel
 d</a>\nby Doosung Park (Universität Zürich) as part of Motives and What 
 Not\n\n\nAbstract\nThere are many non A1-invariant cohomology theories lik
 e Hodge cohomology theories. To incorporate these in the framework of tria
 ngulated categories of motives\, we can instead use a compactification of 
 A1 in logarithmic geometry\, which we call Cube. One technical problem is 
 that Cube does not admit a multiplication map\, so Cube is not an interval
  object in the sense of Morel and Voevodsky. In particular\, the naive Sin
 g functor is not useful. In this talk\, I will explain how to construct a 
 Sing functor for Cube that can be used to compare Voevodsky's motives and 
 logarithmic motives.\n
LOCATION:https://researchseminars.org/talk/MotivesAndWhatNot072020/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tariq Syed (Universität Duisburg-Essen)
DTSTART:20200729T143000Z
DTEND:20200729T153000Z
DTSTAMP:20260416T144627Z
UID:MotivesAndWhatNot072020/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MotivesAndWh
 atNot072020/3/">The cancellation of projective modules of rank 2 with a tr
 ivial determinant</a>\nby Tariq Syed (Universität Duisburg-Essen) as part
  of Motives and What Not\n\n\nAbstract\nI will begin with a brief survey o
 f the results on the cancellation problem of projective modules over commu
 tative rings (i.e. algebraic vector bundles on affine schemes). Motivated 
 by this\, I will introduce the generalized Vaserstein symbol and explain i
 ts applications to the cancellation problem and the generalized Serre ques
 tion on algebraic vector bundles.\n
LOCATION:https://researchseminars.org/talk/MotivesAndWhatNot072020/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Akhil Mathew (University of Chicago)
DTSTART:20200729T160000Z
DTEND:20200729T170000Z
DTSTAMP:20260416T144627Z
UID:MotivesAndWhatNot072020/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MotivesAndWh
 atNot072020/4/">On K(1)-local TR</a>\nby Akhil Mathew (University of Chica
 go) as part of Motives and What Not\n\n\nAbstract\nThe K(1)-localization o
 f algebraic K-theory was first studied by Thomason\, who showed that it is
  filtered by étale cohomology under mild hypotheses. Using some recent ad
 vances in the theory of topological Hochschild homology and cyclotomic spe
 ctra\, I will explain some general properties of K(1)-local TR and an anal
 og of Thomason's result in this context.\n
LOCATION:https://researchseminars.org/talk/MotivesAndWhatNot072020/4/
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