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SUMMARY:Shiji Lyu (Princeton)
DTSTART:20230310T200000Z
DTEND:20230310T210000Z
DTSTAMP:20260407T214459Z
UID:agstanford/103
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/agstanford/1
 03/">Behavior of some invariants in characteristic $p$</a>\nby Shiji Lyu (
 Princeton) as part of Stanford algebraic geometry seminar\n\nLecture held 
 in Room 383-N.\n\nAbstract\nThere are many numerical invariants of a ring 
 in characteristic $p$ measuring its singularity. In this talk\, we will di
 scuss two classical ones\, Hilbert-Kunz multiplicity and the $F$-signature
 \, and a rather recent one\, the $F$-rational signature. We will discuss s
 everal properties of these invariants\, including semi-continuity and beha
 vior under smooth extensions.\n
LOCATION:https://researchseminars.org/talk/agstanford/103/
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