Date

2024年4月19日 (金) 13:00 14:00

OIST organizer: OIST Center for Quantum Technologies (OCQT) and Bill Munro (Quantum Engineering & Design Unit) | OIST members are welcome to attend all scientific sessions.

Date

2024年5月29日 (水) 15:00

Speaker : Professor Neal Bez, Saitama University

Title : The Brascamp-Lieb Inequality

 

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Date

2024年5月15日 (水) 10:00 11:00

Speaker: Professor Jana Björn, Linköping University and OIST TSVP Visiting Scholar

Title: The Dirichlet Problem and Boundary Regularity for Nonlinear Parabolic Equations

Abstract: As shown by Serrin in 1964, the growth at an isolated singularity of solutions to the elliptic equation div A(x, ∇u) = 0 in Rn (including p-harmonic functions with p > 1) is exactly determined by the dimension n and the parameter p associated with the equation. In this talk, I will discuss growth and integrability properties for p-harmonic Green functions and their gradients on weighted Rn, with a p-admissible weight, as well as on complete metric spaces equipped with a doubling measure supporting a p-Poincar´e inequality. In these situations, the dimension n is replaced by the local growth of the underlying measure near the isolated singularity, and the obtained growth and integrability exponents are sharp.

Date

2024年5月8日 (水) 10:00 11:00

Speaker:  Professor Anders Björn, Linkoping University and OIST TSVP Visiting Scholar

Title: The Dirichlet problem and boundary regularity for nonlinear parabolic equations    

Abstract: The p-parabolic equation \[ \partial_t u = \Delta_p u := \dvg(|\nabla u|^{p-2}\nabla u) \] is a nonlinear cousin of the classical heat equation. As such, it offers both difficulties and advantages compared with the heat equation. In the talk, we consider the Perron method for solving the Dirichlet problem for the p-parabolic equation in general bounded domains in $R^{n+1}$. Compared to space-time cylinders, such domains allow the space domain to change in time. Of particular interest will be boundary regularity for such domains, i.e. whether solutions attain their boundary data in a continuous way. Relations between regular boundary points and barriers will be discussed, as well as some peculiar examples and surprising phenomena related to boundary regularity. Towards the end I will discuss the same type of questions for two other nonlinear cousins of the heat equation, the porous medium equation \[ \partial_t u = \dvg(u^m) \] and the so-called normalized p-parabolic equation \[ \partial_t u = |\nabla u|^{2-p}\Delta_p u. \] The talk is based on collaborations with Jana Bj\"orn (Link\"oping), Ugo Gianazza (Pavia), Mikko Parviainen (Jyv\"askyl\"a) and Juhana Siljander (Jyv\"askyl\"a).

Date

2024年4月17日 (水) 15:00 16:00

Speaker: Dr. Brian Seguin, Associate Professor, Loyola University Chicago

Date

2024年4月15日 (月) 11:00

Seminar: by Dr. Daniel Stroppa from Dectris on Fast 4D STEM with ARINA Hybrid-Pixel Detector

 

Dr. Daniel Stroppa from Dectris will be giving a talk on their ARINA Hybrid-Pixel Detector for 4D-STEM at 11 am April the 15th in Meeting Room C016 in Lab 1. 

Date

2024年4月16日 (火) 15:00 16:00

Eoghan McDowell,  OIST

Title: Spin representations of the symmetric group which reduce modulo 2 to Specht modules

Date

2024年4月10日 (水) 15:00

QG visitor seminar.
Speaker: Adi Armoni (Swansea University).
Title: 't Hooft model as a String Theory.

Date

2024年4月12日 (金) 15:00 16:00

Join us for an interactive presentation with Rik van Gorp, the co-founder of Heratec, as he shares his entrepreneurial journey and insights into developing groundbreaking green technologies. 

Date

2024年4月10日 (水) 13:00 14:00

Speaker:  Professor Ugur G. Abdulla, Analysis and Partial Differential Equations Unit, OIST

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