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Current Colloquia & Seminars

  1. EGN Polyfold Lab Meeting: Scale Calculus 201 + Polyfold building blocks

    Location: MSRI: Baker Board Room
    Speakers: Benjamin Filippenko (University of California, Berkeley), Katrin Wehrheim (University of California, Berkeley), Zhengyi Zhou (University of California, Berkeley)

    We will discuss inverse and implicit function theorems in Scale Calculus. 
    In the second hour, we will collaboratively make a list of existing, expected, and desirable local-local models towards describing more pseudoholomorphic curve moduli spaces as zero sets of scale-Fredholm sections.

    Updated on Apr 20, 2018 11:42 AM PDT
  2. EGN Main Seminar: Knot homology and Hilbert schemes

    Location: MSRI: Simons Auditorium
    Speakers: Evgeny Gorsky

    I will describe recent results and conjectures relating knot invariants (such as HOMFLY-PT polynomial and Khovanov-Rozansky homology) to algebraic geometry of the Hilbert scheme of points on the plane. The talk is based on joint works with Andrei Negut, Jacob Rasmussen and Matthew Hogancamp.

    Updated on Apr 20, 2018 10:59 AM PDT
  3. EGN Main Seminar: Monoidal Gerbes and Cohomological Hall (co)Algebras

    Location: MSRI: Simons Auditorium
    Speakers: Sven Meinhardt (University of Sheffield)

    I will introduce the concept of monoidal gerbes and show how to use them to twist suitable monoidal tensor categories. We will see interesting examples of this construction related to moduli stacks of objects in Calabi-Yau categories. For 3-Calabi-Yau categories we can go even further by constructing interesting monoidal functors. This allows us to define the Cohomological Hall (co)Algebra.

    Updated on Apr 20, 2018 11:34 AM PDT