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DTSTART:20070311T020000
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DTSTAMP:20260211T135224
DTSTART;TZID=America/Detroit:20260225T160000
DTEND;TZID=America/Detroit:20260225T170000
SUMMARY:Workshop / Seminar:Probability and Analysis Seminar: Finite time singularities in the Landau equation with very hard potentials
DESCRIPTION:The Landau equation\, introduced by Lev Landau in 1936\, is one of the central equations in kinetic theory. We consider the Landau equation with very hard potentials $\gamma \in (\sqrt{3}\,2]$\, which is known to admit global smooth solutions for homogeneous data. Inspired by hydrodynamic limits from kinetic equations to fluid equations\, we construct smooth\, strictly positive initial data that develop a finite-time singularity by lifting imploding singularities from the compressible Euler equations. In self‑similar variables\, the solution becomes asymptotically hydrodynamic—the distribution function converges to a local Maxwellian\, while the hydrodynamic fields develop an asymptotically self‑similar implosion whose profile coincides with a smooth imploding profile of the compressible Euler equations.  To our knowledge\, this provides the first example of a collisional kinetic model which is globally well-posed in the homogeneous setting\, but admits finite time singularities for inhomogeneous data.\n \nThis is joint work with Jacob Bedrossian (UCLA)\, Maria Gualdani (UT Austin)\, Sehyun Ji (UChicago)\, Vlad Vicol (NYU)\, and Jincheng Yang (JHU).
UID:145282-21897003@events.umich.edu
URL:https://events.umich.edu/event/145282
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4088
CONTACT:
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DTSTAMP:20260223T020145
DTSTART;TZID=America/Detroit:20260225T160000
DTEND;TZID=America/Detroit:20260225T170000
SUMMARY:Workshop / Seminar:Student AIM Seminar: A Beginner’s introduction to optimal control theory
DESCRIPTION:In this talk I describe the basic deterministic control problem and how to solve it using the method of the adjoint function. The method is motivated through examination of the problem’s structure and properties its solutions would exhibit. Hopefully by the end of this talk you’ll know what an adjoint function is\, be able to solve basic optimal control problems\, and have an idea of when solutions exist.
UID:145805-21897837@events.umich.edu
URL:https://events.umich.edu/event/145805
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Applied Mathematics
LOCATION:East Hall - 3088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260219T221509
DTSTART;TZID=America/Detroit:20260225T160000
DTEND;TZID=America/Detroit:20260225T170000
SUMMARY:Workshop / Seminar:Topology seminar: Top-dimensional cohomology of the congruence subgroup Gamma_{0\,n}(p)
DESCRIPTION:Let Gamma_{0\,n}(p) be the congruence subgroup of level p of SL_n(Z) whose first column is congruent to (*\,0\,\dots\,0)^t \mod p. The cohomology of this subgroup has connections to problems in algebraic K-theory and number theory. Borel and Serre (1973) showed that the rational cohomology of Gamma_{0\,n}(p) vanishes above degree n(n+1)/2. \n\nWe prove that the top-dimensional rational cohomology group of Gamma_{0\,n}(p) vanishes for all p equal to 2\,3\,5\,7\,13 and when n is at least 3\, as well as for all primes p at most 6n-14. We also reprove the known non-vanishing result that this group is nonzero for n=2 for every prime p\, and we establish a new non-vanishing for n=3 for all primes p not equal to 2\,3\,5\,7\,13. \n\nIn this talk\, I will outline the ideas behind these results and briefly survey what is known about the top-dimensional cohomology of related congruence subgroups.
UID:143836-21894104@events.umich.edu
URL:https://events.umich.edu/event/143836
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 3866
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260324T085405
DTSTART;TZID=America/Detroit:20260225T160000
DTEND;TZID=America/Detroit:20260225T170000
SUMMARY:Meeting:Unpacking the News with U-M Faculty Experts
DESCRIPTION:Each session offers a space to pause\, sort out what’s happening\, and engage in thoughtful\, civil discussion with peers. Bring your questions\, your curiosity\, and your perspective—no preparation required.\n\nJosh Pasek is Professor of Communication & Media and Political Science\, Faculty Associate at the Center for Political Studies\, Institute for Social Research\, and Associate Director of the Michigan Institute for Data Science at the University of Michigan.
UID:143802-21894059@events.umich.edu
URL:https://events.umich.edu/event/143802
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Civic Learning,Civic Engagement,Undergraduate,Talk,Social Impact,Politics,Media,In Person,Free,Education,Culture
LOCATION:Michigan League - Room 4
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260210T150634
DTSTART;TZID=America/Detroit:20260225T160000
DTEND;TZID=America/Detroit:20260225T173000
SUMMARY:Lecture / Discussion:WCEE Lecture. The Roots of Russia’s War on Ukraine
DESCRIPTION:Putin’s regime has advanced various pretexts for invading Ukraine\, including NATO expansion\, Ukraine’s alleged “neo-Nazi government\,” and a supposed genocide against ethnic Russians in the Donbas. These false claims are rooted in a narrative of the so-called historical unity of Russians and Ukrainians. After tracing the historical origins of Russia’s unwillingness to accept an independent Ukrainian state\, this talk examines these Putinist narratives alongside the real motivations behind Russian aggression\, which lie in late Soviet and post-Soviet developments. Key factors include diverging political and social trajectories in Russia and Ukraine\, conflicting interpretations of the Soviet past\, and the distorted perception of Ukraine shared by Putinist elites and many ordinary Russians. The full-scale invasion of Ukraine is not merely about reclaiming historically “Russian” territories\; it is also an attempt to eliminate a political and social model that the Russian dictator finds profoundly threatening. In this sense\, the war represents an extension of his assault on Russia’s own civil society as well as a continuation of a long-standing Russian crusade against Western influences.\n   \nBorn and educated in Ukraine when it was part of the Soviet Union\, Serhy Yekelchyk received a Ph.D. from the University of Alberta. He is the author of eight books on modern Ukrainian history\, Stalinism\, and Russo-Ukrainian relations. His monograph *Stalin’s Citizens: Everyday Politics in the Wake of Total War* (Oxford University Press\, 2014) was the recipient of the Best Book Award from the American Association for Ukrainian Studies\, and its Ukrainian translation in 2019 received a special diploma of the Lviv Book Forum. His survey of Ukrainian history\, *Ukraine: Birth of a Modern Nation* (Oxford University Press\, 2007)\, was *Choice Magazine’s* Book of the Year and went on to be translated into five languages. Yekelchyk is currently working on the third\, considerably expanded\, edition of his popular book about the Euromaidan Revolution and Russian aggression in Ukraine\, *Ukraine: What Everyone Needs to Know* (Oxford University Press\, 2020). Yekelchyk has written op-eds for the *Washington Post*\, *Wall Street Journal*\, and *Politico*. His interview credits include the BBC History Magazine\, CNN\, the *New York Times*\, and numerous other international media outlets. A professor of History and Slavic Studies at the University of Victoria\, Yekelchyk is current president of the Canadian Association for Ukrainian Studies.\n\nZoom Registration Link: https://myumi.ch/z98x4\n\nIf there is anything we can do to make this event accessible to you\, please contact us at gosiak@umich.edu. Please be aware that advance notice is necessary as some accommodations may require more time for the university to arrange.
UID:144934-21896166@events.umich.edu
URL:https://events.umich.edu/event/144934
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:ukraine,russia
LOCATION:Weiser Hall - Room 555
CONTACT:
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DTSTAMP:20260225T120227
DTSTART;TZID=America/Detroit:20260225T163000
DTEND;TZID=America/Detroit:20260225T180000
SUMMARY:Other:Beginner Bike Repair Workshops with WoW (FREE!)
DESCRIPTION:Want to be ready to fix a flat in a pinch? Adjust your gears for smoother riding? Interested in learning basic bike repair? \n \nJOIN WOLVERINES ON WHEELS FOR OUR FIRST BEGINNER BIKE EDUCATIONAL WORKSHOPS! SIGN UP REQUIRED.\nWednesdays Feb 25 & Mar 25 from 4:30-6pm in the Duderstadt Fabrication Underground. \n \nYou will be working on recycled WoW bikes so please do not bring your own bike into the facilities for these workshops--you can get repair support on your own bike at our drop-in hours.\n \nThese workshops will center on ABCQuick Checks and the basics of bike maintenance. All bikes\, tools\, and materials will be provided so please just show up with an enthusiasm to learn and participate with our volunteers. Sign up here! https://calendly.com/wolverinesonwheels-admin-umich/abcquick-check-workshop \n \nInterested in volunteering or have other questions? Email wolverinesonwheels-admin@umich.edu
UID:145017-21896552@events.umich.edu
URL:https://events.umich.edu/event/145017
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:
LOCATION:Duderstadt Fabrication Underground
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260225T120250
DTSTART;TZID=America/Detroit:20260225T170000
DTEND;TZID=America/Detroit:20260225T180000
SUMMARY:Conference / Symposium:Guest Speaker Event with Dr. Harold Neighbors 
DESCRIPTION:Join us on Zoom this Wednesday\, the 25th\, at 5 PM for a presentation by Dr. Harold Neighbors on his work in public health and racial disparities in health and mental health disorders. This session is perfect for anyone affected by this and for students interested in pre-health fields. Learn from Dr. Neighbors and gain valuable insight into this important topic.
UID:145843-21897946@events.umich.edu
URL:https://events.umich.edu/event/145843
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:
LOCATION:Online
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260218T082906
DTSTART;TZID=America/Detroit:20260225T170000
DTEND;TZID=America/Detroit:20260225T180000
SUMMARY:Social / Informal Gathering:Maze in Blue
DESCRIPTION:Join us on Wednesday\, February 25\, 2026 from 5-6 PM in 302 West Hall!
UID:145654-21897639@events.umich.edu
URL:https://events.umich.edu/event/145654
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:astronomy,astrophysics
LOCATION:West Hall - 302
CONTACT:
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