Monday, December 21, 2020 - 09:00

Language: English


Tuesday, September 29, 2020 - 09:00 to 10:00

Speaker:  Mahir Can, Tulane University

Title: Spherical Varieties and Combinatorics

Abstract: Let G be a reductive complex algebraic group with a Borel subgroup B. A spherical G-variety is an irreducible normal G-variety X where B has an open orbit. If X is affine, or if it is projective but endowed with a G-linearized ample line bundle, then the group action criteria for the sphericality is in fact equivalent to the representation theoretic statement that a certain space of functions (related to X) is multiplicity-free as a G-module. In this talk, we will discuss the following question about a class of spherical varieties: if X is a Schubert variety for G, then when do we know that X is a spherical L-variety, where L is the stabilizer of X in G.


Monday, September 14, 2020 - 13:30 to 15:30

Title: The three-body problem from Newton to gravitational waves

Speaker: Dr. Alessandro Alberto Trani


The gravitational few-body problem is one of the oldest conundrums in astronomy and classical mechanics. Yet, its simplest instance, the three-body problem, has no general analytical solution and only a partial statistical solution has been achieved so far. With the birth of gravitational wave astronomy and the rise in exoplanet discoveries, the three-body problem is again becoming central to explaining astrophysical phenomena.

I will first describe our recent efforts in deriving a complete statistical solution to the non-hierarchical, chaotic three-body problem. I will then review the status of gravitational wave detections and our current understanding of their origin, and show how three-body interactions play a key role in several formation pathways of gravitational wave events. 


Friday, September 25, 2020 - 11:00 to 12:30

What kind of questions should I be asking when I meet someone from another culture for the first time?  How do I avoid making a bad first impression? What kind of communication strategy should I have?


Friday, October 23, 2020 - 16:00


Meeting ID: 921 6698 5125
Passcode: 883637


Recent discussions in neuroscience have been arguing about the necessity of a revision to our approach in neuroscience. A common approach in neuroscience starts from a phenomenon such as attention or memory as defined from our psychological heritage, trying to find a brain correlate of this phenomenon. This method has been argued to be suffering from two main problems first is the loosely defined psychological terms and second is the correlation fallacy that has been a major concern in neuroscience. We invited two experts in neuroscience from both OIST and RIKEN trying to get their insight on this problem and how different experimental, mathematical and analytical techniques will help us frame a new path in neuroscience research.

Topic: ONOS discussion seminar 
Time: Oct 23, 2020 04:00 PM Osaka, Sapporo, Tokyo



Friday, September 18, 2020 - 11:00 to 12:30

How can we describe the cultures of others? More importantly how do we describe our own culture? Join us to find out some language that you can use to answer these questions.


Thursday, September 17, 2020 - 17:00

Conversation practice for Advanced Japanese speakers!

Thursdays at 17:00

September 17th - December 10th, 2020

Zoom link-


Tuesday, September 15, 2020 - 17:00

JLPT (日本語能力試験)practice for all levels!

Every Tuesday from 5-6 PM

Zoom link to join-


Friday, September 18, 2020 - 12:00
  • Who: English learners with intermediate or above skills
  • What: Zoom discussion about current events in English
  • When: 12-1 PM,every other Friday
  • How: click to join at 12PM



Monday, November 2, 2020 - 16:00

Language: English