upcoming events

< 2019 >
December
«
»
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
2
3
  • 4:15 PM
    4:15 PM-5:15 PM
    December 3, 2019

    1 Oxford Street, Cambridge, MA 02138 USA

    1 Oxford Street, Cambridge, MA 02138 USA

    Speaker: Niky Kamran – McGill University

    The anisotropic Calderon inverse problem consists in recovering the metric of a compact connected Riemannian manifold with boundary from the knowledge of the Dirichlet-to-Neumann map at fixed energy. A fundamental result due to Lee and Uhlmann states that there is uniqueness in the analytic case. We shall present counterexamples to uniqueness in cases when:

    1) The metric smooth in the interior of the manifold, but only H\”older continuous on one connected component of the boundary, with the Dirichlet and Neumann data being measured on the same proper subset of the boundary.
    2) The metric is smooth everywhere and Dirichlet and Neumann data are measured on disjoint subsets of the boundary.

    This is joint work with Thierry Daude (Cergy-Pontoise) and Francois Nicoleau (Nantes).

4
5
6
  • 3:30 PMGAUGE-TOPOLOGY-SYMPLECTIC SEMINAR
    3:30 PM-4:30 PM
    December 6, 2019

    1 Oxford Street, Cambridge, MA 02138 USA

    1 Oxford Street, Cambridge, MA 02138 USA

    Speaker: Song Sun – Berkeley

    The Donaldson-Uhlenbeck-Yau theorem relates the existence of Hermitian-Yang-Mills connections over a compact Kahler manifold with algebraic stability of a holomorphic vector bundle. This has been extended by Bando-Siu in 1994 to a class of singular Hermitian-Yang-Mills connections on reflexive sheaves. We study tangent cones of these singular connections in the geometric analytic sense, and show that they can be characterized in terms of certain algebro-geometric invariants of reflexive sheaves. In a sense, this can be viewed as a “local” version of the Donaldson-Uhlenbeck-Yau correspondence.  Based on joint work with Xuemiao Chen (University of Maryland). 

    Future schedule is found here: https://scholar.harvard.edu/gerig/seminar

  • 3:30 PMGAUGE-TOPOLOGY-SYMPLECTIC SEMINAR

    GAUGE-TOPOLOGY-SYMPLECTIC SEMINAR

    3:30 PM-4:30 PM
    December 6, 2019

    1 Oxford Street, Cambridge, MA 02138 USA

    1 Oxford Street, Cambridge, MA 02138 USA

    Speaker: Song Sun – Berkeley
    Abstract:

    TBA

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
January
January
January
January

news

Harvard Coronavirus Resources and Links

CrimsonClear.harvard.edu Site to attest to daily wellness before entering Harvard Campus Facilities. Harvard COVID-19 Training--Access Harvard Environmental Health & Safety course on basic COVID-19 safety...
Read more

David Kazhdan Awarded Shaw Prize

David Kazhdan, Professor Emeritus of Mathematics at Harvard and Professor of Mathematics at Hebrew University, Jerusalem, Israel was co-recipient along with Alexander Beilinson of The...
Read more

2020 Undergraduate Prizes and Awards

Congratulations to the recipients of the Mathematics Department's undergraduate prizes and awards this year! David Mumford Undergraduate Mathematics Prize From the income of the gift...
Read more

Math Seminars Online

Harvard Math is pleased to participate in the rapidly expanding Mathseminars.org project, a powerful resource for discovering international online research seminars and conferences. Mathseminars.org
Read more

See more news