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Nilpotent Frobenius actions and computing Frobenius closures of parameter ideal

Recent Developments in Commutative Algebra April 15, 2024 - April 19, 2024

April 15, 2024 (11:30 AM PDT - 12:30 PM PDT)
Speaker(s): Lance Edward Miller (University of Arkansas)
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Primary Mathematics Subject Classification No Primary AMS MSC
Secondary Mathematics Subject Classification No Secondary AMS MSC
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Nilpotent Frobenius actions and computing Frobenius closures of parameter ideal

Abstract

Computing Frobenius closures of ideals is a classically difficult problem. Starting in 2006 with work of Katzman-Sharp the problem is made tractable for Cohen-Macaulay rings.  Since roughly 2019, starting from work of Quy and Maddox, there has been an explosion of activity in computing Frobenius closure of parameter ideals. This has come by studying F-nilpotent singularities. In this talk, we will review the recent aspects of this research, applications of F-nilpotence to computing Frobenius test exponents, and the significant recent advances in F-nilpotent singularities that arose from this.

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Nilpotent Frobenius actions and computing Frobenius closures of parameter ideal

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