BEGIN:VCALENDAR VERSION:2.0 PRODID:-//University of Utah Math Department//Commutative Algebra Seminar//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Commutative Algebra Seminar - Fall 2014 X-WR-CALDESC:Commutative Algebra Seminar at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20140829T151000-youngsu-kim@math.utah.edu DTSTART;TZID=America/Denver:20140829T151000 DTEND;TZID=America/Denver:20140829T161000 DTSTAMP:20260824T165229Z SUMMARY:Quasi-Gorensteinness of Extended Rees Algebras DESCRIPTION:Speaker: Youngsu Kim\, University of California, Riverside\n\nLet R be a Noetherian ring and I an ideal. It is well known that if the associated graded ring gr_I(R) is Cohen-Macaulay or Gorenstein, then so is R. However, the converse does not hold true in general. Therefore, it is interesting to investigate under which conditions good properties of R transfer … LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20140919T151000-ilya-smirnov@math.utah.edu DTSTART;TZID=America/Denver:20140919T151000 DTEND;TZID=America/Denver:20140919T161000 DTSTAMP:20260824T165229Z SUMMARY:Global properties of Hilbert-Kunz multiplicity DESCRIPTION:Speaker: Ilya Smirnov\, University of Virginia\n\nHilbert-Kunz multiplicity is an invariant of a local ring in characteristic p > 0. I will talk about global properties of this invariant viewed as a function on the spectrum of a ring, and compare the results to the classical theory of multiplicity developed in connection with resolution of … LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20140926T151000-bregje-pauwels@math.utah.edu DTSTART;TZID=America/Denver:20140926T151000 DTEND;TZID=America/Denver:20140926T161000 DTSTAMP:20260824T165229Z SUMMARY:Separable and Galois extensions in tensor triangulated categories DESCRIPTION:Speaker: Bregje Pauwels\, UCLA\n\n LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20140926T151000-jesse-burke@math.utah.edu DTSTART;TZID=America/Denver:20140926T151000 DTEND;TZID=America/Denver:20140926T161000 DTSTAMP:20260824T165229Z SUMMARY:Higher homotopies and Golod rings DESCRIPTION:Speaker: Jesse Burke\, UCLA\n\nWe study free resolutions of R = Q/I modules using A-infinity structures on Q-free resolutions. These higher homotopies give a very general change of rings theorem for free resolutions, and a construction of Q-free resolutions of all R-syzygies of R-modules. We use these tools to study Golod … LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141003T151000-nathan-geer@math.utah.edu DTSTART;TZID=America/Denver:20141003T151000 DTEND;TZID=America/Denver:20141003T161000 DTSTAMP:20260824T165229Z SUMMARY:Some remarks on quantum sl(2) DESCRIPTION:Speaker: Nathan Geer\, Utah State University\n\nThere are several different flavors of quantum sl(2) based on a common algebraic presentation given by generators and uncommunicative relations. In this talk I will discuss an algebra we call the unrolled quantum group and its category of representations. In particular, I will discuss how to … LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141010T151000-zheng-yang@math.utah.edu DTSTART;TZID=America/Denver:20141010T151000 DTEND;TZID=America/Denver:20141010T161000 DTSTAMP:20260824T165229Z SUMMARY:Cohomology over graded complete intersections of codimension two DESCRIPTION:Speaker: Zheng Yang\, University of Nebraska-Lincoln\n\n LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141031T151000-billy-sanders@math.utah.edu DTSTART;TZID=America/Denver:20141031T151000 DTEND;TZID=America/Denver:20141031T161000 DTSTAMP:20260824T165229Z SUMMARY:Homological dimension, a derived equivalence, and the New Intersection Theorem DESCRIPTION:Speaker: Billy Sanders\, University of Kansas\n\n LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141107T151000-jonathan-kujawa@math.utah.edu DTSTART;TZID=America/Denver:20141107T151000 DTEND;TZID=America/Denver:20141107T161000 DTSTAMP:20260824T165229Z SUMMARY:Tensor triangular geometry for Lie superalgebras DESCRIPTION:Speaker: Jonathan Kujawa\, University of Oklahoma\n\nBalmer has shown us how to define a topological space (known as the spectrum) for any tensor triangulated category. The definition is very much in the spirit of the spectrum of a commutative ring and, indeed, you can recover the spectrum of a commutative ring using Balmer's setup. More generally, … LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141114T151000-sean-sather-wagstaff@math.utah.edu DTSTART;TZID=America/Denver:20141114T151000 DTEND;TZID=America/Denver:20141114T161000 DTSTAMP:20260824T165229Z SUMMARY:Two questions about Ext DESCRIPTION:Speaker: Sean Sather-Wagstaff\, North Dakota State University\n\n LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141121T151000-jonathan-monta%C3%B1o@math.utah.edu DTSTART;TZID=America/Denver:20141121T151000 DTEND;TZID=America/Denver:20141121T161000 DTSTAMP:20260824T165229Z SUMMARY:Minimal multiplicities and depth of blowup algebras DESCRIPTION:Speaker: Jonathan Montaño\, Purdue University\n\nIn this talk we discuss recent generalizations to non m-primary ideals of the conditions of minimal multiplicity. We discuss the interplay between these conditions and the depths of blowup algebras. We will also show a bound on the reduction number of ideals having a Cohen-Macaulay associated graded … LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141205T151000-pedro-teixeira@math.utah.edu DTSTART;TZID=America/Denver:20141205T151000 DTEND;TZID=America/Denver:20141205T161000 DTSTAMP:20260824T165229Z SUMMARY:Syzygy gap fractals and F-threshold functions DESCRIPTION:Speaker: Pedro Teixeira\, Knox College\n\n LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT BEGIN:VEVENT UID:20141212T151000-felipe-perez@math.utah.edu DTSTART;TZID=America/Denver:20141212T151000 DTEND;TZID=America/Denver:20141212T161000 DTSTAMP:20260824T165229Z SUMMARY:Using F -modules to measure singularities DESCRIPTION:Speaker: Felipe Perez\, University of Michigan\n\n*F*-modules were introduced by Lyubeznik in order to study properties of local cohomology modules in positive characteristic. Since then, *F*-modules have been found to have different applications in commutative algebra and algebraic geometry. The goal of this talk is twofold. First, to show how … LOCATION:LCB 323 URL:http://math.utah.edu/caseminar/2014-fall/ END:VEVENT END:VCALENDAR