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Home » EGN Main Seminar: Localized Chern Characters for 2-periodic complexes

Seminar

EGN Main Seminar: Localized Chern Characters for 2-periodic complexes April 04, 2018 (02:00 PM PDT - 03:00 PM PDT)
Parent Program:
Location: MSRI: Simons Auditorium
Speaker(s) Bumsig Kim (Korea Institute for Advanced Study (KIAS))
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For a two-periodic complex of vector bundles, Polishchuk and Vaintrob have constructed its localized Chern character. This is a generalization of the usual one. We explore some basic properties of this localized Chern character.  In particular, we show that the cosection localization defined by Kiem and Li is equivalent to a localized Chern character operation for the associated two-periodic Koszul complex, strengthening a work of Chang, Li, and Li. We apply this equivalence to the comparison of virtual classes of moduli of epsilon-stable quasimaps and moduli of the corresponding LG stable quasimaps.

This is joint work with Jeongseok Oh.

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