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DTSTART:20070311T020000
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DTSTAMP:20260215T213840
DTSTART;TZID=America/Detroit:20260217T150000
DTEND;TZID=America/Detroit:20260217T160000
SUMMARY:Workshop / Seminar:Student Commutative Algebra: Openness of the Splinter Locus in Positive Characteristic
DESCRIPTION:A splinter is a ring R for which all finite ring extensions R -> S split as a map of R-modules. While this is a characteristic free property\, it exhibits wildly different behavior in various characteristics. In this talk\, we prove that under mild hypotheses\, the locus of primes p in R with the local ring R_p a splinter is Zariski-open. In particular\, we define a splinter test ideal\, and show that this construction behaves well under localization to conclude that the vanishing set of this ideal is exactly the non-splinter locus.
UID:145506-21897445@events.umich.edu
URL:https://events.umich.edu/event/145506
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 3088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260217T152054
DTSTART;TZID=America/Detroit:20260217T154500
DTEND;TZID=America/Detroit:20260217T161500
SUMMARY:Workshop / Seminar:SEAS
DESCRIPTION:
UID:144269-21895083@events.umich.edu
URL:https://events.umich.edu/event/144269
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Sessions
LOCATION:
CONTACT:
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