In this talk, we will discuss some joint work with Alexandru
Ionescu on the nonlinear inviscid damping near point vortex and
monotone shear flows in a finite channel. We will put these results
in the context of long time behavior of 2d Euler...
Many data analysis pipelines are adaptive: the choice of which
analysis to run next depends on the outcome of previous analyses.
Common examples include variable selection for regression problems
and hyper-parameter optimization in large-scale...
We define a quantum product on the cohomology of a symplectic
manifold relative to a Lagrangian submanifold, with coefficients in
a Novikov ring. The associativity of this product is equivalent to
an open version of the WDVV equations for an...
Supported by new observational capabilities, some of our basic
concepts in Milky Way research have changed over the last several
years. Our growing appreciation of the central bar of the Milky
Way, the radial migration of stars, the Galactic thick...
Sums of Dirichlet
characters ?n?x?(n)?n?x?(n) (where ?? is a
character modulo some prime rr, say) are one of the best
studied objects in analytic number theory. Their size is the
subject of numerous results and conjectures, such as the
Pólya...
Perverse sheaves and intersection cohomology are central objects
in geometric representation theory. This talk is about their
long-lost K-theoretic cousins, called K-motives. We will discuss
definitions and basic properties of K-motives and explore...
We discuss various (still open) questions on approximations of
finitely generated groups, focusing on finite-dimensional
approximations such as residual finiteness and soficity. We survey
our results on the existence, stability and quantification
of...
The Satisfiability problem is perhaps the most famous problem in
theoretical computer science, and significant effort has been
devoted to understanding randomly generated SAT instances. The
random k-SAT model (where a random k-CNF formula is chosen...
The study of hyperkaehler manifolds of lowest dimension (and of
gauge theory on them) leads to a chain of generalizations of the
notion of a quiver: quivers, bows, slings, and monowalls. This talk
focuses on bows, their representations, and...
