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DTSTAMP:20240325T002528
DTSTART;TZID=America/Detroit:20240328T160000
DTEND;TZID=America/Detroit:20240328T170000
SUMMARY:Workshop / Seminar:Commutative Algebra Seminar: Splitting of vector bundles on toric varieties
DESCRIPTION:In 1964\, Horrocks proved that a vector bundle on a projective space splits as a sum of line bundles if and only if it has no intermediate cohomology. Generalizations of this criterion\, under additional hypotheses\, have been proven for other toric varieties\, for instance by Eisenbud-Erman-Schreyer for products of projective spaces\, by Schreyer for Segre-Veronese varieties\, and Ottaviani for Grassmannians and quadrics. This talk is about a splitting criterion for arbitrary smooth projective toric varieties\, as well as an algorithm for finding indecomposable summands of sheaves and modules in the more general setting of Mori dream spaces.
UID:120671-21845115@events.umich.edu
URL:https://events.umich.edu/event/120671
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics,seminar
LOCATION:East Hall - 3088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240118T165351
DTSTART;TZID=America/Detroit:20240328T160000
DTEND;TZID=America/Detroit:20240328T173000
SUMMARY:Workshop / Seminar:Deformation theory via the cotangent complex
DESCRIPTION:TBA
UID:117419-21839280@events.umich.edu
URL:https://events.umich.edu/event/117419
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4096
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240320T213401
DTSTART;TZID=America/Detroit:20240328T160000
DTEND;TZID=America/Detroit:20240328T170000
SUMMARY:Workshop / Seminar:Differential Equations Seminar: A new singularity model of the Kahler-Ricci flow
DESCRIPTION:The Kahler-Ricci flow is a fully non-linear strictly parabolic equation that deforms compact Kahler manifolds. Being non-linear\, it develops finite time singularities. I will present a new singularity model of the flow and describe our efforts to find it. This is joint work with Deruelle-Sun\, Cifarelli-Deruelle\, and Bamler-Cifarelli-Deruelle.
UID:118951-21841933@events.umich.edu
URL:https://events.umich.edu/event/118951
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240321T084806
DTSTART;TZID=America/Detroit:20240328T160000
DTEND;TZID=America/Detroit:20240328T172000
SUMMARY:Workshop / Seminar:Effects of Caste-Based Affirmative Action in Governance on Socioeconomic Networks and Resource Provision
DESCRIPTION:We study the impacts of political affirmative action for historically disadvantaged caste groups in Bihar\, India on village social and economic networks. To estimate the causal impacts of the policy\, we conduct surveys in communities around the discontinuity in the state government’s policy assignment rule. We find that the marginal constituency assigned to the reservation policy experiences a drop in cross-caste network links and an increase in homophily. Consistent with increased homophily\, reservation leads to less social learning when information is introduced to the community. While reservation is active\, we find no change in the salience of caste concerns and no shifts in beliefs about trustworthiness\, competence\, or work ethic\, among others\, across caste. Finally\, consistent with prior work\, reservation improves access to redistribution schemes. Both lower and upper castes benefit\, indicating no crowd-out at the expense of upper castes.\n\nThis talk is presented by the Economic Development Seminar\, sponsored in part by the Department of Economics through a generous gift given by Jay and Beth Rakow. This talk is also sponsored by the International Policy Center at the Ford School.
UID:117999-21840336@events.umich.edu
URL:https://events.umich.edu/event/117999
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Development,Economics,seminar
LOCATION:Lorch Hall - 201
CONTACT:
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