Past Events

Suppose you have a fixed number of boxes with a square base. These are transported in containers that also have a square base. In order to save space one wants to make containers small while still being able to hold all boxes. How large would the...

A planar set that contains a unit segment in every direction is called a Kakeya set. These sets have been studied intensively in geometric measure theory and harmonic analysis since the work of Besicovich (1928); we find a new connection to game...

Finding ways of getting from place to place has occupied humanity since the dawn of civilization. The Romans built roads, Moses parted the waters, Dorothy clicked her heels (cf. the Wizard of Oz). Mathematicians settle for studying graphs. A graph is...

Denial-of-service (DoS) attacks are one of the biggest threats in the Internet. The predominant approaches to deal with DoS-attacks are to use filtering, redundancy and information hiding. However, against an insider, all of these mechanisms might be...

When Colombus left Spain in 1492, sailing West, he knew that the Earth was round and was expecting to land in Japan. Seventeen centuries earlier, around 200 BC, Eratosthenes had shown that its circumference was 40,000 km, just by a smart use of...

When Colombus left Spain in 1492, sailing West, he knew that the Earth was round and was expecting to land in Japan. Seventeen centuries earlier, around 200 BC, Eratosthenes had shown that its circumference was 40,000 km, just by a smart use of...

We prove the global asymptotic stability of shear flows close to planar Couette flow in the 2D incompressible Euler equations. Specifically, given an initial perturbation of the Couette flow which is small in a suitable sense, we show that the...

I will describe results concerning evolution equations involving nonlocal terms. Particular examples will include the Surface Quasi-Geostrophic equation (SQG) and its generalizations. I will discuss a nonlinear maximum principle for linear nonlocal...

In 1757, Euler presented to the Berlin Academy of Sciences the basic equations of fluid mechanics. As pointed out by V.I. Arnold in 1966, the Euler equations for incompressible fluids have a very simple geometric interpretation that combines the...

In this talk the speaker will identify elementary mathematical frameworks for the study of old and new drag racing beliefs. In this manner some myths are validated, while others are destroyed. The first part of the talk will be a historical account...