Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) is an international research program at RIKEN. It facilitates close collaborations among researchers from different disciplines in theoretical, mathematical and computational sciences. The ultimate goal of iTHEMS is to unravel the mystery of the Universe, matter, and life, as well as to solve key problems in modern society through interdisciplinary approaches.

## Upcoming Events

### Tropical Rain Forest

February 21 at 15:30 - 17:00, 2019

Prof. Akiko Satake (Professor, Department of Biology, Faculty of Science, Kyushu University)

Venue: Okochi Hall

Broadcast: #311, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English

### Symmetric Tornheim double zeta functions

February 25 at 15:00 - 16:00, 2019

Dr. Takashi Nakamura (Tokyo University of Science)

Let $s,t,u \in {\mathbb{C}}$ and $T(s,t,u)$ be the Tornheim double zeta function. We investigate some properties of symmetric Tornheim double zeta functions. As a corollary, we give explicit evaluat...more

Venue: Seminar Room #160

Event Official Language: English

### Joint value distribution of quadratic L-functions (joint work with Hirofumi Nagoshi)

February 25 at 16:20 - 17:20, 2019

Dr. Hidehiko Mishou (Tokyo Denki University)

In 1975, Voronin established the universality theorem for the Riemann zeta function. Roughly speaking this theorem asserts that any holomorphic function on 1/2<Re(s)<1 can be uniformly approximated b...more

Venue: Seminar Room #160

Event Official Language: English

### Theory of Operator Algebras (8th)

March 5 at 14:00 - 15:00, 2019

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Title: An introduction to operator algebras Abstract: Operators are linear maps from a (usually an infinite dimensional) linear space (most frequently the Hilbert space) to itself, which is like m...more

Venue: Seminar Room #160

Event Official Language: Japanese

### Theory of Operator Algebras (9th)

March 5 at 15:30 - 16:30, 2019

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Title: An introduction to operator algebras Abstract: Operators are linear maps from a (usually an infinite dimensional) linear space (most frequently the Hilbert space) to itself, which is like m...more

Venue: Seminar Room #160

Event Official Language: Japanese

### Workshop of Nuclear-Astrophysics by UKAKUREN/Japan Forum of Nuclear Astrophysics (JaFNA): Nuclear data & Heavy Element Nucleosynthesis

March 6 - 8, 2019

We are pleased to announce that we will have a meeting on Nuclear-Astrophysics at Hokkaido Univ. Especially this time we will focus on the impact of nuclear data & nucleosynthesis of heavy elements. G...more

Venue: Hokkaido University academic exchange hall

Event Official Language: Japanese

### Introduction to Public-Key Cryptography (9th)

March 6 at 13:30 - 15:00, 2019

Dr. Eren Mehmet Kıral (Visiting Scientist, iTHEMS)

Venue: Seminar Room #160

Event Official Language: English

### ZetaValue2019-iTHEMS Special Mathematics Colloquium

March 21 at 13:00 - 17:00, 2019

Dr. Kohji Matsumoto
(Nagoya University)

Dr. Jörn Steuding
(University of Würzburg, Germany)

Venue: Okochi Hall

Event Official Language: English

### Value distribution of zeta and L-functions and related topics

March 22 - 27, 2019

March 22–26, 2019 Main Conference (invited talks, posters and a limited number of short contributed talks) Welcome Reception: March 22, 2019 (18:00~20:00) Conference Dinner: March 25, 2019 (18:30...more

Venue: Okochi Hall / Large Meeting Room, 2F Welfare and Conference Building

Event Official Language: English

### iTHEMS-AIMR Joint Workshop "Medicine meets Mathematics"

March 29 at 10:00 - 17:00, 2019

Speakers: Takuya Ueda (Tohoku Univ. Hospital) Noriaki Ogawa (RIKEN iTHEMS) Takayuki Sakajo (Math. Dep., Kyoto Univ.) Yoshiki Sugitani (AIMR, Tohoku Univ.) Jun Seita (RIKEN MIH) Tetsuro Sekine (N...more

Venue: 3rd floor Lecture Theater, Katahira Campus, Tohoku University

Event Official Language: Japanese

### GRIPS-Sendai program

June 17 - August 9, 2019

GRIPS (Graduate-level Research in Industrial Projects for Students)-Sendai program was held last summer (June 18 - Aug. 10, 2018) with the support of iTHEMS as well as other institutions and companies...more

Venue: 4F Research Space, AIMR Main Building

Event Official Language: English

## Latest News

2019-02-08

### Summary of RIKEN-Berkeley workshop on Quantum Information Science (RB19)

RIKEN-Berkeley workshop on Quantum Information Science was held at Lawrence Berkeley National Lab. (building 66) from Jan.26 through 29, 2019. The workshop was started with general introductions t...more

2019-02-07

### Quantum annealing for polynomial systems of equations

The advent of Noisy Intermediate-Scale Quantum (NISQ) quantum computers has galvanized efforts towards discovering near-term applications. An algorithm for solving polynomial systems of equations was ...more

2019-01-31

### Back Reaction of 4D Conformal Fields on Static Geometry

In classical mechanics, a black hole is described by a vacuum solution with the horizon of the Einstein equation. For spherical case, it is the Schwarzschild metric, and the location of the horizon is...more

## Upcoming Visitors

### Ms. Masami Kajiura

Term: February 26 - March 8, 2019

Visiting Place: Main Research Building

### Dr. Gordon Baym

Senior Visiting Scientist, iTHEMS

Term: February 26 - March 26, 2019

Visiting Place: RIKEN Wako Campus