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All Colloquia & Seminars

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  1. MSRI Evans Talk: Finite dimensional Banach Spaces

    Location: 60 Evans Hall, UC Berkeley
    Speakers: Pierre Colmez (Institut de Mathématiques de Jussieu)

    The algebraic closure of the field ${\bf Q}_p$ of $p$-adic number is infinite dimensional over ${\bf Q}_p$, hence its completion ${\bf C}_p$ is also infinite dimensional.  I will describe objects that can be thought of as finite dimensional vector spaces over ${\bf C}_p$ up to finite dimensional ${\bf Q}_p$-vector spaces and explain what kind of properties they have. I will end up with some recent applications.

    Updated on Nov 24, 2014 10:00 AM PST
  2. Number Theory Seminar: Wild ramification and K(π; 1) spaces

    Location: 740 Evans Hall

    Speaker: Piotr Achinger

     

    A smooth variety in characteristic zero is Zariski-locally a K(π; 1) space, i.e., has trivial higher homotopy groups. This fact is of crucial importance in Artin’s proof that l-adic cohomology agrees with singular cohomology over C. The characteristic p variant of this is not known—we do not even know whether the affine plane is a K(π; 1) in positive characteristic! I will show how to reduce this question to a “Bertini-type” statement regarding wild ramification of l-adic local systems on affine spaces, which might be of independent interest. I will verify this statement in the special case of local systems of rank 1 and speculate on how one might treat the general case.

    Updated on Nov 25, 2014 09:48 AM PST
  3. Colloquium

    Location: MSRI: Simons Auditorium
    Created on Sep 02, 2014 12:56 PM PDT
  4. Joint Seminar

    Location: MSRI: Simons Auditorium
    Created on Sep 03, 2014 10:27 AM PDT
  5. GRT Research Seminar

    Location: MSRI: Simons Auditorium
    Created on Sep 03, 2014 12:39 PM PDT
  6. Number Theory Seminar

    Location: 740 Evans Hall
    Created on Sep 12, 2014 01:33 PM PDT
  7. NGM Research Seminar

    Location: MSRI: Simons Auditorium
    Updated on Oct 01, 2014 12:07 PM PDT
  8. NGM Research Seminar

    Location: MSRI: Simons Auditorium
    Updated on Oct 01, 2014 12:07 PM PDT
  9. GRT Pizza Seminar

    Location: MSRI: Simons Auditorium
    Updated on Sep 03, 2014 04:22 PM PDT
  10. Grad Student Seminar

    Location: MSRI: Simons Auditorium
    Updated on Oct 10, 2014 04:43 PM PDT
  11. Colloquium

    Location: MSRI: Simons Auditorium
    Created on Sep 02, 2014 12:58 PM PDT
  12. GRT Research Seminar

    Location: MSRI: Simons Auditorium
    Created on Sep 03, 2014 12:46 PM PDT
  13. Number Theory Seminar

    Location: 740 Evans Hall
    Created on Sep 12, 2014 01:34 PM PDT

Past Seminars

seminar
  1. Seminar Number Theory Seminar

    Created on Sep 12, 2014 01:29 PM PDT
  2. Seminar GRT Research Seminar

    Created on Sep 03, 2014 12:26 PM PDT
There are more then 30 past seminars. Please go to Past seminars to see all past seminars.