Events for 11/08/2023 from all calendars

Noncommutative Geometry Seminar

Time: 10:00AM - 11:00AM

Location: BLOC 302

Speaker: Guo Chuan Thiang, Peking University

Title: Quantum kilogram and quantized commutator traces

Abstract: In the 70s, Helton-Howe uncovered intricate structure in the traces of commutators. In the 80s, physicists discovered macroscopic quantization in the quantum Hall effect, leading to a redefinition of the kilogram in 2019. I will explain how these are directly related, and offer some perspectives on the coarse geometry approach to index theory on noncompact manifolds.

Numerical Analysis Seminar

Time: 3:00PM - 4:00PM

Location: BLOC 302

Speaker: Annalisa Quaini, University of Houston

Title: Towards the computational design of smart nanocarriers

Abstract: Membrane fusion is a potentially efficient strategy for the delivery of macromolecular therapeutics into the cell interior. However, existing nanocarriers formulated to induce membrane fusion suffer from a key limitation: the high concentrations of fusogenic lipids needed to cross cellular membrane barriers lead to toxicity in vivo. To overcome this limitation, we are developing in silico models that will explore the use of membrane phase separation to achieve efficient membrane fusion with minimal concentrations of fusion-inducing lipids and therefore reduced toxicity. The models we consider are formulated in terms of partial differential equations posed on evolving surfaces, i.e., the surface of the nanocarrier that undergoes fusion. For the numerical solution, we use a fully Eulerian hybrid (finite difference in time and trace finite element in space) discretization method. The method avoids any triangulation of the surface and uses a surface-independent background mesh to discretize the problem. Thus, our method is capable of handling problems posed on implicitly defined surfaces and surfaces undergoing strong deformations and topological transitions.

Seminar in Random Tensors

Time: 3:00PM - 4:00PM

Location: BLOC 624

Speaker: JM Landsberg, TAMU

Title: Structure v. Randomness for Bilinear Maps, after Cohen and Moshkovitz

Groups and Dynamics Seminar

Time: 3:00PM - 4:00PM

Location: BLOC 628

Speaker: Zheng Kuang, Texas A&M University

Title: Growth of groups with finitely many incompressible elements

Abstract: I will define the class of groups of bounded type with finite cycles from tile inflations. Then I will show that if the set of incompressible elements of a group in this class is finite, then this group has subexponential growth with a bounded power in the exponent. Examples will be provided.

College of Arts & Sciences Faculty Affairs Team

Time: 4:00PM - 5:00PM

Location: Blocker 117