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DTSTAMP:20251202T085317
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SUMMARY:Workshop / Seminar:RCGD Seminar Series on Social Connection: Kristina Smiley
DESCRIPTION:Kristina Smiley\nUniversity of Michigan\nHow Hormones and Sensory Cues Shape the Parental Brain\nMarch 9\, 2026\n\nABOUT THE SERIES\n\nThe Winter 2026 RCGD Seminar Series: The Ties that Bond: Interdisciplinary Perspectives on Social Connection\n\nThis seminar series brings together senior and early-career scholars to explore fundamental questions about how we connect\, protect\, and care. Talks will highlight lifespan and comparative approaches to understanding social connection\, physiological implications of social and race-related stressors\, and diverse conceptualizations of what it means to belong—from romantic and parent–child relationships to group and societal dynamics to technology-mediated interactions.\n\nRobin Edelstein\, Professor of Psychology at the University of Michigan and an affiliate of the Research Center for Group Dynamics\, has organized this series. She will introduce the series at this kick-off event that doubles as a faculty meeting.\n\nThe first seminar in the series will be Jan. 26. Join us on Mondays to learn about the biological\, social\, and developmental pathways that shape human connection.\n\nThese events are held Mondays from 3:30 to 5.\nIn person: ISR Thompson 1430\, unless otherwise specified.\nOrganized by Robin Edelstein\nAs permissions allow\, seminars are later posted to our YouTube playlist.
UID:142308-21890446@events.umich.edu
URL:https://events.umich.edu/event/142308
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Medicine,Social Sciences,Psychology,Biology
LOCATION:Institute For Social Research - 1430
CONTACT:
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DTSTAMP:20260304T174808
DTSTART;TZID=America/Detroit:20260309T160000
DTEND;TZID=America/Detroit:20260309T170000
SUMMARY:Livestream / Virtual:An introduction to Dirac geometry and reduction schemes for concurrent Dirac structures.
DESCRIPTION:I will provide first a gentle introduction to Dirac geometry\, which is a way to unify pre-symplectic and Poisson geometry\, as well as turning possibly singular Poisson structures into a perfectly smooth object. \n\nAfter this\, I will consider a particular situation of transferring Dirac structures which is the following:\ngiven an embedded submanifold X of a Dirac manifold (M\, L_M) and given p: X -> Y a smooth surjective submersion\, we want to derive the minimal set of conditions to transfer the Dirac structure L_M on M to a Dirac structure L_Y on Y. These conditions are however not compatible with concurrence\, which is a generalization for Dirac structures of the notion of commuting Poisson pairs. \n\nThen I will characterize a geometric structure\, more precisely a vector bundle E\subset TM|_X that is a \emph{witness} for concurrence: it allows to transfer weakly concurrent Dirac structures on M to weakly concurrent Dirac structures on Y. We show that the Marsden-Ratiu reduction in Poisson geometry is exactly a special case of this construction. Furthermore\, in the presence of a Hamiltonian action of a Lie group G on L_M\, there is a natural candidate for a witness E. \n\nThe main results carry over to the case of complex Dirac structures. This allows us to give an extension of the bi-Hamiltonian reduction of Casati\, Magri e Pedroni in terms of our framework and provide a (conjectural) interpretation of it in terms of complex Dirac structures. \n\nThis talk is based on a joint work with Dan Aguero\, Pedro Frejlich and Igor Mencattini.
UID:143124-21892178@events.umich.edu
URL:https://events.umich.edu/event/143124
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics,Seminar,Virtual
LOCATION:Off Campus Location
CONTACT:
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