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DTSTART:20070311T020000
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DTSTAMP:20251004T193319
DTSTART;TZID=America/Detroit:20251009T153000
DTEND;TZID=America/Detroit:20251009T170000
SUMMARY:Workshop / Seminar:Schubert Polynomials Lecture 6: Schubert polynomials for 321-avoiding permutations
DESCRIPTION:In addition to proving several additional identities for back-stable Schubert polynomials\, we will give determinantal and (new?) tableau formulas for these polynomials for 321-avoiding permutations.
UID:140306-21886900@events.umich.edu
URL:https://events.umich.edu/event/140306
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4096
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250930T082225
DTSTART;TZID=America/Detroit:20251009T153000
DTEND;TZID=America/Detroit:20251009T162000
SUMMARY:Lecture / Discussion:The Department of Astronomy 2025-2026 Colloquium Series Presents:
DESCRIPTION:\"Connecting planetary properties with formation: a new paradigm emerges\"\n\nAbstract: One of the central challenges facing planet formation theory is in understanding how  observed planetary properties – their masses\, orbital characteristics\, bulk properties and atmospheric compositions – are connected to their formation in host protoplanetary disks (PPDs).   Forming planets accrete pebbles\, planetesimals\, and gas with a wide range of chemical compositions as they migrate through their  evolving PPDs.   Essential to these processes  is how angular momentum is transported and removed from disks.  Recent powerful MHD simulations and a wide range of ALMA and JWST observations  confirm that MHD disk winds and not disk turbulence likely  play the dominant role.   In this talk\, I will review these advances\, their consequences for a new paradigm for planet formation\, and discuss several current projects in my group on the effects of such winds on planetary populations and planetary properties such as their mass-radius relations.
UID:140052-21886541@events.umich.edu
URL:https://events.umich.edu/event/140052
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:astronomy,astrophysics
LOCATION:West Hall - 411
CONTACT:
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