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DTSTAMP:20250407T100702
DTSTART;TZID=America/Detroit:20250409T150000
DTEND;TZID=America/Detroit:20250409T160000
SUMMARY:Workshop / Seminar:Student Number Theory: The Fontaine-Wintenberger theorem
DESCRIPTION:Abstract: Let K be a perfectoid field of mixed characteristic (0\, p). Then\, one can form the tilt K^♭ of K\, which is a perfectoid field of characteristic p. The Fontaine-Wintenberger theorem says that the absolute Galois group of K and the absolute Galois group of K^♭ are isomorphic. In this talk\, we will define the tilting functor and construct its inverse using the Witt vectors. Then\, we will see a more conceptual proof using the almost purity theorem. This proof also motivated Scholze to define perfectoid algebras.
UID:134754-21874876@events.umich.edu
URL:https://events.umich.edu/event/134754
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 3088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250409T142032
DTSTART;TZID=America/Detroit:20250409T150000
DTEND;TZID=America/Detroit:20250409T160000
SUMMARY:Workshop / Seminar:Zumba Through Wellness Wednesday
DESCRIPTION:Rackham Student Government welcomes you to a couple hours of wellness and community bonding with fellow graduate students!Sign up for a FREE 50-minute Zumba session at NCRB!
UID:133847-21873616@events.umich.edu
URL:https://events.umich.edu/event/133847
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Sessions
LOCATION:NCRB
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250108T095323
DTSTART;TZID=America/Detroit:20250409T151000
DTEND;TZID=America/Detroit:20250409T161000
SUMMARY:Lecture / Discussion:MIPSE Seminar | RF Plasma Cathodes and Other Research Activities in the Plasma Propulsion Group at NRL
DESCRIPTION:Abstract:\nThis talk discusses recent work on RF plasma cathodes\, propellant agnostic electron sources for electric propulsion systems that enable new deep space exploration mission architectures such as in-situ resource utilization. We develop the fundamental theory for these devices and demonstrate its effectiveness at determining I-V characteristics and performance. From our measurements and model\, we project thruster performance and discuss the consequences for space exploration. Then we dive into non-ideal behavior that can be exhibited in these cathodes including sheath expansion and mode transitions. The remainder of the discussion will overview other plasma-related research activities in the NRL propulsion group.\n\nAbout the Speaker: \nDr. Marcel Georgin is an Aerospace Engineer at the Naval Research Laboratory in Washington\, D.C. He earned his bachelor’s degree in physics from McGill University in Montreal\, Canada\, and his Ph.D. in applied physics from the University of Michigan where he studied plasma instabilities in electron sources for electric propulsion systems. His research interests are at the intersection of plasma physics and engineering\, with a strong focus on space propulsion. He is currently working on a variety of plasma-related topics\, including propellant agnostic electron sources\, hypersonics environmental simulation\, advanced thermionic cathodes\, and more.\n\nThe seminar will be conducted in person and simulcast via Zoom: https://mipse.umich.edu/seminars_2425.php#winter2025
UID:130711-21866562@events.umich.edu
URL:https://events.umich.edu/event/130711
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:In Person,Michigan Engineering,Physics,Plasma,Propulsion,seminar,Talk
LOCATION:Electrical Engineering and Computer Science Building - 1003
CONTACT:
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