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Jun
11
2025

Princeton University Informal Physics Seminar

Boundary Scattering and Non-invertible Symmetries in 1+1 Dimensions
Soichiro Shimamori
2:30pm|Jadwin Hall, 4th Floor, PGI Space

Abstract: Recent studies by Copetti, Córdova and Komatsu have revealed that when non-invertible symmetries are spontaneously broken, the conventional crossing relation of the S-matrix is modified by the effects of the corresponding topological...

Jun
13
2025

IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar

Three 20 Minute Research Talks
Shuo Zhang , Kifung Chan and May Sela
9:15am|Remote Access

Shuo Zhang (Morningside Center of Mathematics):Composed Dehn twist exact sequence through quilts and $(A_\infty,n)$ modules

We prove the quilted Floer cochain complexes form $(A_\infty,n)$ modules over the Fukaya category $Fuk(M \times M^-)$. Then...

Jun
17
2025

Computer Science/Discrete Mathematics Seminar II

Upper Bounds for Multicolour Ramsey Numbers
Marius Tiba
10:30am|Simonyi Hall 101 and Remote Access

The $r$-colour Ramsey number $R_r(k)$ is the minimum $n \in \mathbb{N}$ such that every $r$-colouring of the edges of the complete graph $K_n$ on $n$ vertices contains a monochromatic copy of $K_k$. We prove, for each fixed $r \ge 2$, that 

$$R_r(k)...

Jun
20
2025

IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar

A toric case of the Thomas-Yau conjecture
Jacopo Stoppa
9:15am|Remote Access

We consider a class of Lagrangian sections L contained in certain Calabi-Yau Lagrangian fibrations (mirrors of toric weak Fano manifolds). We prove that a form of the Thomas-Yau conjecture holds in this case: L is Hamiltonian isotopic to a special...