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Speaker:
Aaron Pixton
Affiliation:
MIT
Date:
Thu, 27/04/2017 - 11:15 - 12:15
Location:
MPIM Lecture Hall
Parent event:
Extra talk The Deligne-Mumford moduli space of stable curves of genus g admits a stratification by topological type.
These boundary strata define classes in the Chow ring of the moduli space of stable curves. I will describe
a natural generalization of these boundary strata classes to unstable topological types. I will then explain
how to use the generalized boundary strata classes to define a small subring of the Chow ring containing
every double ramification cycle.
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