Mathematics Department

Upcoming Talks

This is a list of all upcoming talks for the next two weeks. Talks are from 3:45-4:45 p.m. in the Colloquium or Seminar Room, unless otherwise specified.

  • Jan
    19
  • On a class of multiscale problems arising in oceanic and atmospheric processes
    Time: 03:45 PM
    Colloquium Series

    View Abstract

    For the last few years I have been working on a set of problems ​in ocean and atmosphere dynamics. They including modeling sea-ice's melting and reemergence, laser beam propagation in a turbulent medium, and formation of tornadoes. These problems have the common feature of possessing temporal and spatial scales that range over a dozen orders of magnitude. Their mathematical models almost always end up being turbulent dynamical systems with large positive Lyapunov exponents, and very large dimensional phase spaces. While these problems are exceeding difficult, we are fortunate in the last two decades to have access to field data to inform our models. Machine learning in combination with solving PDEs numerically, and incorporating data assimilation are the techniques explored to get a handle on the level of complexity these problems present. In this talk I will introduce three problems and discuss various approaches we have taken to analyze them.
  • Jan
    23
  • TBD
    Darren Creutz
    USNA
    Location: CH320
    Time: 03:45 PM
    Operator Algebras and Dynamics Seminars
  • Jan
    27
  • Coasts in Times of Sea-Level Rise
    Bob Kopp
    Rutgers University
    Time: 12:00 PM
    Applied Math Seminar

    View Abstract

    Around the world, sea levels are rising in response to warming oceans, melting glaciers, and shrinking ice sheets – and even faster rise is projected in the coming century. In this talk, Prof. Robert Kopp will explore the different physical processes driving sea-level rise, the geological record of past sea-level changes, methods for assessing the probability of different levels of future changes, and the implications for future coastal flood risks.
  • Jan
    30
  • Obstruction to Lifting Cocycles on Groupoids and Associated C*-Algebras
    Marius Ionescu
    USNA
    Location: CH320
    Time: 03:45 PM
    Operator Algebras and Dynamics Seminars
  • Jan
    31
  • How the Rules of Engagement Affect the Emergence of Consensus
    Prof. Eitan Tadmor
    University of Maryland
    Location: Rickover 102
    Time: 07:00 PM
    Colloquium Series

    View Abstract

    Opinion dynamics in human crowds and flocking of birds are two prototypical examples for systems which are driven by the "social engagement" of members in such crowds. The "social engagements" are formulated by certain rules which quantify how each member is interacts with its neighbors. These local interactions may lead, over time, to global patterns of the whole crowd, such as the emergence of consensus of opinions, flocking of birds etc. We explore the question how specific rules of interaction lead to the emergence of consensus/flocking.
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