BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Claremont Center for the Mathematical Sciences - ECPv6.15.17.1//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-ORIGINAL-URL:https://colleges.claremont.edu/ccms X-WR-CALDESC:Events for Claremont Center for the Mathematical Sciences REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:20240310T100000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:20241103T090000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:20250309T100000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:20251102T090000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:20260308T100000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:20261101T090000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=America/Los_Angeles:20250304T150000 DTEND;TZID=America/Los_Angeles:20250304T160000 DTSTAMP:20260505T123546 CREATED:20250214T211058Z LAST-MODIFIED:20250227T210413Z UID:3702-1741100400-1741104000@colleges.claremont.edu SUMMARY:Claremont Topology Seminar: Carrie Frizzell (Scripps College) DESCRIPTION:We especially welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Carrie Frizzell (Scripps College) \nTitle: A Primer on Tropical Geometry \nAbstract: Max-plus and min-plus semifields—coined tropical semifields—appeared in the 1970s in the work of the computer scientist Imre Simon. Since then\, the field of tropical geometry has developed rapidly. In this talk\, we’ll present some basics of tropical geometry\, starting with tropical algebra and then passing to the geometric side via a few examples of tropical hypersurfaces. We will also discuss the relationship between classical algebraic curves and tropical curves. \n  URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-carrie-frizzell-scripps-college/ LOCATION:Estella 2099\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, United States CATEGORIES:Topology Seminar END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Los_Angeles:20250308T080000 DTEND;TZID=America/Los_Angeles:20250308T170000 DTSTAMP:20260505T123546 CREATED:20250212T183309Z LAST-MODIFIED:20250212T183631Z UID:3694-1741420800-1741453200@colleges.claremont.edu SUMMARY:N+12th Southern California Topology Colloquium DESCRIPTION:The Claremont Topology Seminar\, with funding from Pitzer College and the NSF\, is pleased to sponsor the N+12th Southern California Topology Colloquium (SCTC). SCTC is a one-day conference primarily attended by mathematicians from the Southern California area. This year\, the colloquium will be held at the Benson Auditorium at Pitzer College on \nSaturday\, March 8th\, 2025. \nAll talks will take place in Benson Auditorium on the Pitzer College campus. Light breakfast\, lunch\, coffee and snacks will be served in the foyer of Benson Auditorium. The speakers are \nDror Bar-Natan\, University of Toronto \nPatrick Orson\, California Polytechnic State University\, San Luis Obispo \nRhea Palak Bakshi\, University of California\, Santa Barbara \nSucharit Sarkar\, University of California\, Los Angeles \nThere is no registration fee\, but you must register to attend. More information can be found at the SCTC website below: \nhttps://sites.google.com/view/socaltopology/home   \n  \nContact SCTC 2025 organizers for more questions: \nBahar Acu\, \, Pitzer College\, Claremont Colleges \nKo Honda\, \, University of California\, Los Angeles \nYi Ni\, \, California Institute of Technology \nHelen Wong\, \, Claremont McKenna College\, Claremont Colleges \n  URL:https://colleges.claremont.edu/ccms/event/n12th-southern-california-topology-colloquium/ LOCATION:Benson Auditorium\, 1050 N Mills Ave.\, Claremont\, CA\, 91711\, United States CATEGORIES:Special Event,Topology Seminar ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Los_Angeles:20250311T150000 DTEND;TZID=America/Los_Angeles:20250311T160000 DTSTAMP:20260505T123546 CREATED:20250214T211215Z LAST-MODIFIED:20250303T222536Z UID:3703-1741705200-1741708800@colleges.claremont.edu SUMMARY:Claremont Topology Seminar: Iris Yoon (Wesleyan University) DESCRIPTION:We especially welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Iris Yoon (Wesleyan University) \nTitle: Dowker duality\, profunctors\, and spectral sequences \nAbstract: I will present three short\, new proofs of Dowker duality using various poset fiber lemmas. I will introduce modifications of joins and products of simplicial complexes called relational join and relational product complexes. These relational complexes can be constructed whenever there is a relation between simplicial complexes\, which includes the context of Dowker duality and covers of simplicial complexes. In this more general setting\, I will show that the homologies of the simplicial complexes and the relational complexes fit together in a long exact sequence. If time permits\, I’ll discuss similar results for profunctors\, which are generalizations of relations to categories. URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-iris-yoon-wesleyan-university/ LOCATION:Estella 2099\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, United States CATEGORIES:Topology Seminar END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Los_Angeles:20250318T080000 DTEND;TZID=America/Los_Angeles:20250318T170000 DTSTAMP:20260505T123546 CREATED:20250214T211316Z LAST-MODIFIED:20250214T211316Z UID:3704-1742284800-1742317200@colleges.claremont.edu SUMMARY:Claremont Topology Seminar: NO SEMINAR DESCRIPTION:No seminar this week due to Spring break! URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-no-seminar/ CATEGORIES:Topology Seminar END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Los_Angeles:20250325T150000 DTEND;TZID=America/Los_Angeles:20250325T160000 DTSTAMP:20260505T123546 CREATED:20250214T211453Z LAST-MODIFIED:20250324T000533Z UID:3705-1742914800-1742918400@colleges.claremont.edu SUMMARY:Claremont Topology Seminar: Reginald Anderson (Claremont McKenna College) DESCRIPTION:We especially welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Reginald Anderson (Claremont McKenna College) \nTitle: Kontsevich’s Recursive Formula for Rational Plane Curves \nAbstract: Gromov-Witten theory was developed in the 1990s as a curve-counting theory by integrating cohomology classes against a virtual fundamental class for a moduli space of stable maps. One early success of the theory was Kontsevich’s recursive formula for enumerating the number of rational plane curves through 3d-1 points in general position. Starting from a consideration of which genus 0 Gromov-Witten invariants for the complex projective plane can possibly be non-zero\, we will assemble a generating function for these invariants\, called the genus 0 Gromov-Witten potential for the complex projective plane. If time allows\, we will also use the fact that the potential satisfies a partial differential equation called the Witten-Dijkgraaf-Verlinde-Verlinde equation to solve for N_d\, the coefficients of the generating function\, which give the number of rational plane curves through 3d-1 points. \nThis talk follows p. 24-26 of these notes\, available at https://arxiv.org/abs/2501.03232. \nAll are welcome. URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-reginald-anderson-claremont-mckenna-college/ LOCATION:Estella 2099\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, United States CATEGORIES:Topology Seminar END:VEVENT END:VCALENDAR