Previous Conferences & Workshops

Apr
10
2013

Special Number Theory Seminar

Solvability in Polynomials of Pell Equations in a Pencil and a Conjecture of Pink
2:00pm|S-101

The classical Pell equation $X^2-DY^2=1$, to be solved in integers $X,Y\neq 0$, has a variant for function fields (studied already by Abel), where now $D=D(t)$ is a complex polynomial of even degree and we seek solutions in nonzero complex...

Apr
09
2013

Analysis Seminar

Calibrations of Degree Two and Regularity Issues
Constante Bellettini
3:15pm|S-101

Calibrated currents naturally appear when dealing with several geometric questions, some aspects of which require a deep understanding of regularity properties of calibrated currents. We will review some of these issues, then focusing on the two...

Apr
09
2013

Computer Science/Discrete Mathematics Seminar II

"What is Geometric Entropy, and Does it Really Increase?"
Jozsef Beck
10:30am|S-101

We all know Shannon's entropy of a discrete probability distribution. Physicists define entropy in thermodynamics and in statistical mechanics (there are several competing schools), and want to prove the Second Law, but they didn't succeed yet (very...

Apr
08
2013

Members’ Seminar

Small Height and Infinite Non-Abelian Extensions
2:00pm|S-101

The Weil height measures the “complexity” of an algebraic number. It vanishes precisely at 0 and at the roots of unity. Moreover, a finite field extension of the rationals contains no elements of arbitrarily small, positive heights. Amoroso...

Apr
05
2013

Joint IAS/Princeton University Symplectic Geometry Seminar

Manifolds with G_2 Holonomy and Contact Structures
Sema Salur
1:30pm|Fine Hall 322

A 7-dimensional Riemannian manifold (M,g) is called a G_2 manifold if the holonomy group of its Levi-Civita connection of g lies inside G_2. In this talk, I will first give brief introductions to G_2 manifolds, and then discuss relations between G_2...