APRIL 20 (SAT) Hybrid Event: Kavli IPMU x ICRR 30th Joint Public Lecture: "Hyper-Kamiokande Experiment & Singularities"

February 13, 2024
Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI)


This coming April 20 (Sat), the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI) and the Institute for Cosmic Ray Research (ICRR) will host our joint public lecture, "Hyper-Kamiokande Experiment & Singularities". We look forward to seeing you there in person or online. Kavli IPMU Professor Yukari Ito will give a talk, "The Mystery Behind the Singularities - An encounter between Geometry and Algebra".

This public lecture is recommended for those with junior high school level science knowledge and above. Admission is free. There is no limit to seating online, but pre-registration is required.

For more details about the event, and where to register, please visit the ICRR website here.

Event Summary

Time & Date: 1PM - 4PM, April 20 (Sat), 2024
Venue: Kashiwanoha Conference Center (Kashiwa city) or online
Host: Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) and the Institute for Cosmic Ray Research (ICRR)
Co-host: Kashiwa City Board of Education, Mitsui Fudosan Co., Ltd. (Special support)
Supported by: Kashiwa city
Difficulty level: Junior high school level
Admission: Free

  • Onsite seating: 400 (if the number of registrations exceeds seating capacity, we will hold a lottery)
  • Online viewing: No limit

Registration: Fill out a registration form here

  • Onsite registration deadline: April 10 (Wed)
  • Online registration deadline: April 18 (Thu)

How to take part: Once you have registered for the event, you will receive an email from us with the details.

080-4866-2631 (10am - 5pm weekdays, ICRR PR Office)
04-7136-5981 / Email: koukai-kouza_at_ipmu.jp (Kavli IPMU PR Office)
* Note: Please change _at_ to @



1:00PM - 1:50PM

Lecture 1

How the Hyper-Kamiokande Project will change Particle Physics and the Universe

Speaker: Atsushi Takeda (ICRR Associate Professor)

The Hyper-Kamiokande, currently under construction and scheduled to begin observations in 2027, will be a gigantic water Cherenkov-type detector about 10 times the effective mass of the currently operating Super-Kamiokande. The detector will be used for a wide range of research projects, including the study of neutrino particle properties, searching for nucleon decay and dark matter-derived neutrinos. The detector will help uncover the origin of matter in the universe by measuring the difference between neutrino and antineutrino properties, and will explore how matter has evolved by observing neutrinos from supernova explosions that produce neutron stars and black holes. This presentation will explain the frontiers of space and particle research being developed at the Hyper-Kamiokande, and the preparations that are underway for its construction. Besides research, Takeda enjoys swimming and hot springs.

1:50PM - 2:40PM

Lecture 2

The Mystery Behind the Singularities - An encounter between Geometry and Algebra

Speaker: Yukari Ito (Kavli IPMU Professor)

When you see a piece of origami, can you imagine how it was folded? In algebraic geometry, we study figures that are defined algebraically using polynomials, and sometimes they have singularities. A singularity is a sharp point that is different from its surroundings. Sometimes, a black hole is called a singularity in space. Singularities can be created by algebraic operations called groups. It is like the corner created when you fold a piece of origami paper. I will talk about how the geometry of the singularity resolution of a figure corresponds to the algebraic operation of a group used to create the singularity. In other words, this is a mathematical story about how to fold a piece of origami by returning it to it's original form as a piece of paper.

3:00PM - 4:00PM

Researcher cross talk and Q&A time with the audience