Mini Course: Machine Learning for Polymer Chemistry Session 3 Cancelled

A mini course on the application of machine learning in polymer chemistry

Professor Rong Tong is Associate Professor in Chemical Engineering at Virginia Tech 

5 lectures over 5 weeks.  October 16 to November 13 (Friday afternoons)

Update: today's session is cancelled

[Seminar] "Spin(7) Bubbles and Flops under Cohomogeneity-One Assumptions" by Enric Solé-Farré

Enric Solé-Farré (Beijing Institute of Mathematical Sciences and Applications): October 26, 4pm-5pm, lecture room L5D23.

Title: Spin(7) Bubbles and Flops under Cohomogeneity-One Assumptions

Abstract: In this talk, I will discuss geometric transitions and gauge theory on complete noncompact Spin(7) spaces with Aloff–Wallach principal orbits. Cohomogeneity-one symmetry reduces both the torsion-free Spin(7) equations and the invariant gauge theory equations to dynamical systems, providing a setting in which metric degenerations and curvature concentration can be visualised and studied explicitly.
On the gauge-theoretic side, I will describe the construction and moduli problem of invariant Spin(7)-instantons, including a compactification model incorporating both metric and gauge-theoretic bubbles. On the metric side, we will describe three families of asymptotically locally conical metrics, and describe bubble-like behaviour as in the gauge theoretic side. In particular, we will outline how two of the metrics are related by a Spin(7)-flop in the orbifold category, following the expectations of the physicists Cvetic--Gibbons--Lu--Pope and earlier results of Lehmann.
Based on joint work with Hanci Chi.

Coffee Hour at the Visiting Program

"Visiting Program Coffee Hour": informal discussions and getting to know each other, in the Visiting Program (TSVP) area in Lab 5 EF03

Mini Course: Practical Machine Learning for Polymer Chemistry 2

A mini course on the application of machine learning in polymer chemistry

Professor Rong Tong is Associate Professor in Chemical Engineering at Virginia Tech 

5 lectures over 5 weeks.  October 16 to November 13 (Friday afternoons)

TSVP Talk: "Special Holonomy in Geometry and Physics" by Izar Alonso Lorenzo

TSVP Talk
Language: English (no interpretation).
Target audience: General audience / everyone at OIST and beyond.
Freely accessible to all OIST members and guests without registration (also via Zoom).

TSVP Talk: Parallel and Convergent Processing of Value Information in the Primate Basal Ganglia by Hyoung Kim

TSVP Talk
Language: English (no interpretation).
Target audience: General audience / everyone at OIST and beyond.
Freely accessible to all OIST members and guests without registration (also via Zoom).

TSVP Talk: How the Brain Organizes and Reshapes Experience by Sue-Hyun Lee

TSVP Talk
Language: English (no interpretation).
Target audience: General audience / everyone at OIST and beyond.
Freely accessible to all OIST members and guests without registration (also via Zoom).

[Seminar] "Counting Tensor Invariants with Defect TQFT " by Michael Lathwood

Michael Lathwood (OIST): October 19, 4pm-5pm, lecture room L5D23.

Title: Counting Tensor Invariants with Defect TQFT 

Abstract: A tensor transforming under a unitary-orthogonal symmetry group carries finitely many invariant observables of each degree. Counting these so-called tensor invariants is an important problem in the theory of tensor models, and it reduces to counting tuples of permutations modulo a conjugation action.

In this talk, I will explain how this counting can be interpreted as the partition function of an untwisted Dijkgraaf-Witten topological quantum field theory with defects. The permutations groups appearing in the tensor invariant counting problem are exactly the defect data of a stratified manifold, and the tensor invariant is then the groupoid cardinality of the associated gauge groupoid. I conclude with physics applications coming from this perspective of tensor invariants.

This talk is based on forthcoming joint work with Remi Cocou Avhou, Noan Botcazou-Brasse, and Reiko Toriumi. 

Coffee Hour at the Visiting Program

"Visiting Program Coffee Hour": informal discussions and getting to know each other, in the Visiting Program (TSVP) area in Lab 5 EF03

Mini Course: Practical Machine Learning for Polymer Chemistry

A mini course on the application of machine learning in polymer chemistry

Professor Rong Tong is Associate Professor in Chemical Engineering at Virginia Tech 

5 lectures over 5 weeks.  October 16 to November 13 (Friday afternoons)