Effective cones of higher codimension cycles on moduli spaces of curves
 
 
Description:  I will report on joint work with Dawei Chen where we study effective cones of higher codimension cycles on moduli spaces of curves.
We show certain geometrically defined cycles span extremal rays in the effective cone. In particular, we prove that codimension two boundary strata are extremal. We also construct infinitely many extremal
codimension two cycles on moduli spaces of marked genus one and two curves.
Date:  2014-07-09
Start Time:   14:30
Speaker:  Izzet Coskun (Univ. of Illinois at Chicago, USA)
Institution:  University of Illinois at Chicago (USA)
Place:  Room 5.5 DMat
Research Groups: -Algebra and Combinatorics
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