K-rings of moduli spaces of stable curves of genus 0

Add to your list(s) Download to your calendar using vCal

• Matt Larson, Stanford
• Tuesday 28 February 2023, 15:00-16:00
• CMS MR14.

If you have a question about this talk, please contact Dhruv Ranganathan.

The Deligne-Mumford-Knudsen moduli space of n-pointed stable curves of genus 0 is a smooth projective variety of dimension n – 3. We construct an integral isomorphism from its Grothendieck ring of vector bundles to its Chow cohomology ring which satisfies a Hirzebruch-Riemann-Roch-type formula. This isomorphism, which is unrelated to the Chern character, can be used to reduce many K-theoretic computations to easier problems in intersection theory. Joint with Shiyue Li, Sam Payne, and Nick Proudfoot.

This talk is part of the Algebraic Geometry Seminar series.

This talk is included in these lists:

• Algebraic Geometry Seminar
• All CMS events
• All Talks (aka the CURE list)
• CMS Events
• CMS MR14
• DPMMS Lists
• DPMMS Pure Maths Seminar
• DPMMS info aggregator
• DPMMS lists
• Hanchen DaDaDash
• Interested Talks
• School of Physical Sciences
• bld31

Note that ex-directory lists are not shown.