Past Seminars

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  • Ko Honda
    Tue Nov 20, 2018
    4:00 pm
    Convex surface theory and bypasses are extremely powerful tools for analyzing contact 3-manifolds.  In particular they have been successfully applied to many classification problems.  After reviewing convex surface theory in dimension three,  we explain how to generalize many of their properties to higher dimensions.  ...
  • Ko Honda
    Tue Nov 20, 2018
    4:00 pm
    Convex surface theory and bypasses are extremely powerful tools for analyzing contact 3-manifolds.  In particular they have been successfully applied to many classification problems.  After reviewing convex surface theory in dimension three,  we explain how to generalize many of their properties to higher dimensions.  ...
  • TBA
    Tue Nov 20, 2018
    3:00 pm
  • Rolando de Santiago
    Tue Nov 20, 2018
    3:00 pm
    The works of F. Murray and J. von Neumann outlined a natural method to associate a von Neumann algebra to a group. Since then, an active area of research seeks to investigate which structural aspects of the group extend to its von Neumann algebra.  The difficulty of this problem is best illustrated by Conne's landmark result which states...
  • Travis Scholl
    Tue Nov 20, 2018
    3:00 pm
    Multilinear maps is a new hot topic in cryptography because they offer a significant number of applications. The main open problem in this area is constructing a secure and efficiently computable multilinear map. In this talk, we introduce cryptographic multilinear maps, go through several applications, and then discuss some possible obstructions...
  • Fan Yang
    Tue Nov 20, 2018
    11:00 am
       In this talk, we consider the largest singular value of the so-called separable covariance matrix Y=A^{1/2}XB^{1/2}, where X is a random matrix with i.i.d. entries and A, B are deterministic covariance matrices (which are non-negative definite symmetric). The separable covariance matrix is commonly used in e.g. environmental study,...
  • Rolando De Santiago
    Tue Nov 20, 2018
    11:00 am
    This talk is aimed (mostly) at undergraduate students.  Abstract: In the 1930’s and 1940’s, Murray and von Neumann developed a theory of operators on Hilbert spaces, which heuristically may be thought of as infinite matrices acting on infinite dimensional vector spaces. Their works include a procedure which starts with an infinite...