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CANCELLED Chow-theoretic vs. K-theoretic Gromov-Witten invariants

Presented by: 
Adeel Khan
Thursday 26th March 2020 - 16:00 to 17:00
INI Seminar Room 1
Let X be a smooth projective complex variety.  We prove the comparison between the Gromov-Witten invariants of X with their K-theoretic variants defined by Givental and Lee.  The key ingredient is a virtual Grothendieck-Riemann-Roch formula on the moduli stack of stable maps, which is used to compare Kontsevich’s virtual fundamental class with the one constructed by Behrend-Fantechi.  

University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons