Previous Conferences & Workshops

Feb
08
2011

Computer Science/Discrete Mathematics Seminar II

Bypassing UGC From Some Optimal Geometric Inapproximability Results
Rishi Saket
10:30am|S-101

The Unique Games conjecture (UGC) has emerged in recent years as the starting point for several optimal inapproximability results. While for none of these results a reverse reduction to Unique Games is known, the assumption of bijective projections...

Feb
07
2011

Members’ Seminar

Recursively Applying Constructive Dense Model Theorems and Weak Regularity
2:00pm|S-101

Green and Tao [GT] used the existence of a dense subset indistinguishable from theprimes under certain tests from a certain class to prove the existence of arbitrarily longprime arithmetic progressions. Tao and Ziegler [TZ] showedsome general...

Feb
07
2011

Computer Science/Discrete Mathematics Seminar I

Fast Random Projections
Edo Liberty
11:15am|S-101

The Johnson-Lindenstrauss lemma (also known as Random Projections) states that any set of n points in Euclidian space can be embedded almost isometrically into another Euclidian space of dimension O(log(n)). The talk will focus on the efficiency of...

Feb
04
2011

Analysis/Mathematical Physics Seminar

Generalized Kepler Problems
2:00pm|S-101

For many elegant mathematical examples, one can 1) find theories behind them, 2) understand why they exist in the first place, 3) explore the consequences in math and physics. If one takes the Euler number as such an example, then the theory behind...

Feb
02
2011

Special Lecture in Geometry/Topology

Microlocal Theory of Sheaves and Applications to Non-Displaceability III
Pierre Schapira
4:00pm|S-101

In these two lectures, I will come back and develop the material outlined in the Monday Seminar. More precisely, I will explain with more details the notion of microsupport of sheaves and its behaviour with respect to the operations, in particular...

Feb
01
2011

Special Lecture in Geometry/Topology

Microlocal Theory of Sheaves and Applications to Non-Displaceability II
Pierre Schapira
4:00pm|S-101

In these two lectures, I will come back and develop the material outlined in the Monday Seminar. More precisely, I will explain with more details the notion of microsupport of sheaves and its behaviour with respect to the operations, in particular...

Feb
01
2011

Geometry and Cell Complexes Seminar

Topological Analysis of Grain Boundaries
Srikanth Patala
2:00pm|S-101

Polycrystalline materials, such as metals, ceramics and geological materials, are aggregates of single-crystal grains that are held together by highly defective boundaries. The structure of grain boundaries is determined by five geometric parameters...