Previous Conferences & Workshops

Nov
20
2024

Combinatorics of Fundamental Physics Workshop

Organizers: Nima Arkani-Hamed, June Huh, Thomas Lam, and Bernd Sturmfels

This event aimed to foster collaboration between mathematicians and physicists. The focus was on the intersection of combinatorial geometry and fundamental physics, covering...

Nov
19
2024

Joint IAS/PU Groups and Dynamics Seminar

Spanning Trees of Simple Planar Graphs
Alex Kontorovich
4:30pm|314 Fine Hall

We prove the exponential growth of the cardinality of the set of numbers of spanning trees in simple planar graphs on n vertices, answering a question from 1969. The proof uses a connection with continued fractions and advances towards Zaremba’s...

Nov
19
2024

Symplectic Geometry Seminar

The Asymptotic Mean Action and the Asymptotic Linking Number For Pseudo-Rotations
Abror Pirnapasov
1:00pm|Simonyi 101 and Remote Access

By the Birkhoff Ergodic Theorem, the asymptotic mean action of an area-preserving map is defined almost everywhere. Bramham and Zhang asked whether, if a map is a pseudo-rotation, its asymptotic mean action is defined everywhere and is constant. In...

Nov
19
2024

Computer Science/Discrete Mathematics Seminar II

Quadratic Stability of the Brunn-Minkowski Inequality
10:30am|Simonyi 101 and Remote Access

The Brunn-Minkowski inequality is a fundamental result in convex geometry controlling the volume of  the sum of subsets of $\mathbb{R}^n$. It asserts that for  sets $A,B\subset \mathbb{R}^n$ of equal volume and a parameter $t\in(0,1)$, we have $|tA+...

Nov
19
2024

Combinatorics of Fundamental Physics Workshop

Organizers: Nima Arkani-Hamed, June Huh, Thomas Lam, and Bernd Sturmfels

This event aimed to foster collaboration between mathematicians and physicists. The focus was on the intersection of combinatorial geometry and fundamental physics, covering...

Nov
18
2024

Joint IAS/PU Arithmetic Geometry

Hodge structures and representation theory
3:35pm|*Princeton University, Fine Hall 224*

Kazhdan-Lusztig theory provides a pattern of applying tools of algebraic geometry,
such as the theory of Frobenius or Hodge weights, to numerical problems of representation theory.
These techniques have been used in representation theory over a field...

Nov
18
2024

Computer Science/Discrete Mathematics Seminar I

Induced Subgraphs and Pathwidth
Maria Chudnovsky
10:30am|Simonyi 101 and Remote Access

Tree decompositions, and in particular path decompositions, are a powerful tool in both structural graph theory and graph algorithms. Many hard problems become tractable if the input graph is known to have a tree decomposition of bounded “width”...

Nov
18
2024

Combinatorics of Fundamental Physics Workshop

Organizers: Nima Arkani-Hamed, June Huh, Thomas Lam, and Bernd Sturmfels

This event aimed to foster collaboration between mathematicians and physicists. The focus was on the intersection of combinatorial geometry and fundamental physics, covering...