Previous Conferences & Workshops

Nov
13
2014

Joint IAS/Princeton University Number Theory Seminar

Fourier--Jacobi periods on unitary groups
4:30pm|Fine 214, Princeton University

We formulate a conjectural identity relating the Fourier--Jacobi periods on unitary groups and the central value of certain Rankin--Selberg \(L\)-functions. This refines the Gan--Gross--Prasad conjecture. We give some examples supporting this...

Nov
12
2014

Topology of Algebraic Varieties

Universal Chow group of zero-cycles on cubic hypersurfaces
11:15am|S-101

We discuss the universal triviality of the \(\mathrm{CH}_0\)-group of cubic hypersurfaces, or equivalently the existence of a Chow-theoretic decomposition of their diagonal. The motivation is the study of stable irrationality for these varieties...

Nov
11
2014

Topology of Algebraic Varieties

Zarhin's trick and geometric boundedness results for K3 surfaces
François Charles
3:30pm|S-101

Tate's conjecture for divisors on algebraic varieties can be rephrased as a finiteness statement for certain families of polarized varieties with unbounded degrees. In the case of abelian varieties, the geometric part of these finiteness statements...

Nov
11
2014

Topology of Algebraic Varieties

Mixed Hodge theory: some intuitions
2:00pm|S-101

I will try to explain some intuitions and some history about (mixed) Hodge theory. Warning: the experts will not learn anything new.

Nov
11
2014

Topology of Algebraic Varieties

Birational Actions of \(\mathrm{SL}(n,\mathbb Z)\) II
Serge Cantat
11:00am|Physics Library, Bloomberg Hall 201

Consider a smooth complex projective variety \(M\). To understand the group of birational transformations (resp. regular automorphisms) of \(M\), one can use tools from Hodge theory, dynamical systems, and geometric group theory. I shall try to...

Nov
11
2014

Computer Science/Discrete Mathematics Seminar II

Asymptotic expansions of the central limit theorem and its applications
10:30am|S-101

In its simplest form, the central limit theorem states that a sum of n independent random variables can be approximated with error \(O(n^{-1/2})\) by a Gaussian with matching mean and second moment (given these variables are not too dissimilar). We...