We consider variational principles related to V. I. Arnold's
stability criteria for steady-state solutions of the
two-dimensional incompressible Euler equation. Our goal is to
investigate under which conditions the quadratic forms defined by
the...
I will present the cosmological weak lensing results from the
Dark Energy Survey (DES) using its first three years of data, taken
on the 4m Blanco telescope at CTIO. This analysis spans the full
DES footprint, more than 4000 sq. deg. of sky, with...
As solutions can be efficiently verified, any NP-complete
problem can be solved by exhaustive search. Unfortunately, even for
small instances the running time for exhaustive search becomes very
high.
Abstract 1: The time delay measured between the images of
gravitationally lensed quasars probes a combination of angular
diameter distances and the mass profile of the lens. Observational
campaigns to measure such systems have reported a...
Legendrian torus knots were classified by Etnyre and Honda. I
will explain the classification of Legendrian torus links. In
particular, I will describe restrictions on the Legendrian torus
knots that can be realized as the components of a Legendrian...
Human learning outstrips modern machine learning and AI in at
least three abilities: rapid robust learning, in effectively open
worlds, in near-real time with very little energy. Mathematical
formalization of signature human abilities has the...
“Negative Energy, Quantum Information and
Causality”
Einstein’s equations of gravity show that too much negative
energy can lead to causality violations and causal paradoxes such
as the so-called "grandfather paradox.”...
The topic of the talk will be Floer theories on exact symplectic
orbifolds with smooth contact boundary. More precisely, I will
first describe the construction, which only uses classical
transversality techniques, of a symplectic cohomology group
on...
In 1986, Hooley applied (what practically amounts to) the
general Langlands reciprocity (modularity) conjecture and GRH in a
fresh new way, over certain families of cubic 3-folds. This
eventually led to conditional near-optimal bounds for the
number...
