# Hot Topic

## The Journalist in Residence Workshop was held from June 1 to June 4

2018-06-18

From June 1 to June 4, Journalist in Residence Workshop was held at Tambara Institute of Mathematical Sciences of the University of Tokyo, located in a high-plain nature park 1,200 meters above sea level and 140 kilometers north of Tokyo. The "Journalist in Residence (JIR)" program in Mathematics started in 2010 with the support of the Mathematical Society of Japan. By the program, journalists in a broad sense stay at major math departments and institutes in Japan and talk to people (professors, students, visitors, librarians), attend seminars and conferences. The program aims to enhance the relationships between mathematicians and the general public. Then Journalist in Residence Workshop started in 2011 aiming to exchange information of JIR in different institutes among the participants as well as among host institutions. The workshop also fuctions as outreach of institutions. RIKEN iTHEMS began hosting this workshop from last year. This year, there were 10 journarists and 11 participants from RIKEN, 6 from universities and 3 from others. Young participants of RIKEN iTHEMS mainly explained their recent important achievements to the nonspecialists and matured participants explained thier experiences on academic journalism. The whether during the JIR workshop of this year was very nice and the participants hiked together around the Tambara marsh and the Tambara lake. The disscussion among the participants continued with joy until late in the evening.

iTHEMS Science Outreach Workshop 2018

June 1 - 4, 2018

# Upcoming Events

## Seminar

### Relative and equivariant Lagrangian Floer homology and Atiyah-Floer conjecture

June 19 at 14:30 - 16:00, 2018

Prof. Kenji Fukaya (Senior Visiting Scientist, iTHEMS / Permanent Member, Simons Center for Geometry and Physics, Stony Brook University, New York, USA)

Supported by RIKEN iTHEMS and Tuesday Seminar on Topology (Graduate School of Mathematical Sciences, The University of Tokyo).

Venue: Room 056, Graduate School of Mathematical Sciences, The University of Tokyo

Event Official Language: Japanese

## Math Lecture

### Introduction to Public-Key Cryptography (5th)

June 21 at 10:30 - 12:00, 2018

Dr. Eren Mehmet Kıral (Visiting researcher, RIKEN Center for Advanced Intelligence Project (AIP))

Venue: Seminar Room #160, 1F Main Research Building, RIKEN

Event Official Language: English

## Math Lecture

### Theory of Operator Algebras (2nd)

June 21 at 15:30 - 17:00, 2018

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Please note that the date and time of the 2nd lecture has been changed from May 21 10:30 to June 21 15:30.

Venue: Seminar Room #160, 1F Main Research Building, RIKEN

Event Official Language: English

## Seminar

### Introduction to spin-boson model

June 22 at 10:30 - 17:30, 2018

Dr. Takeo Kato (The Institute for Solid State Physics (ISSP), The University of Tokyo)

10:30-12:30 Introduction to spin-boson model @DR3 (14th Building 213)

14:00-15:30 Kondo effect @DR7 (14th Building 217)

16:00-17:30 Detail of NIBA formalism @DR7 (14th Building 217)

Venue: Yagami Campus, Keio University

Event Official Language: Japanese

## Math Lecture

### Computational Algebraic Statistics and its Applications

June 26 at 10:00 - 16:30, 2018

Prof. Satoshi Aoki (Professor, Department of Mathematics, Kobe University)

Lecture 1 (10:00-11:30)

An introduction of Groebner bases of polynomial rings

Lecture 2 (13:00-14:30)

Groebner bases theory in design of experiments

Lecture 3 (15:00-16:30)

Groebner bases theory in sampling problems of contingency tables

This introductory lecture is about statistical theory from the point of view of the computational algebraic statistics, in particular the applications of Groebner bases. The statistical theory is a fundamental tool in natural science, social science and humanities, and the Groebner basis is a topic related to multi-variable polynomials. The Lecture will start from an introduction to the Groebner basis which would have wide applications in mathematics, physics, biology, chemistry, engineering, information science and computer science. Therefore, we welcome scientists in any field who are interested in this subject.

The event official language is Japanese (slides and writing are in English).

Venue: #535-537, 5F, Main Research Building, RIKEN

Event Official Language: Japanese

## Colloquium

### Systems Biology of Cellular Rhythms

July 2 at 15:00 - 16:30, 2018

Prof. Albert Goldbeter (Professor, Unit of Theoretical Chronobiology, Faculty of Sciences, Université Libre de Bruxelles, Belgium)

Venue: Suzuki Umetaro Hall, 1F Bioscience Building, RIKEN

Broadcast: #305-2, Computational Science Research Building, R-CCS, Kobe Campus, RIKEN / SUURI-COOL (Kyoto), #204-205, 2F Maskawa Building for Education and Research, North Campus, Kyoto University / 2F Seminar Room, AIMR Main Building, Advanced Institute for Materials Research (AIMR), Tohoku University

Event Official Language: English

## Seminar

### Topological Photonics and the four-dimensional quantum Hall effect

July 3 at 15:00 - 17:00, 2018

Dr. Tomoki Ozawa (Senior Research Scientist, iTHEMS)

Event Official Language: English

## Workshop

### iCeMS-iTHEMS Joint Workshop on Interdisciplinary Biology

July 4 at 10:00 - 16:30, 2018

This is the first joint workshop between iCeMS (Kyoto Univ.) and iTHEMS (RIKEN). The WS is co-hosted by KUIAS (Kyoto Univ.), iTHEMS (RIKEN) and MACS Program (Kyoto Univ.). By exploring the forefront of experimental and mathematical biology, this workshop aims to stimulate novel research directions in these areas and strengthen the connection between Kyoto Univ. and RIKEN. Those who plan to attend the "get-together", please register before June 22 (Fri.) noon.

Co-hosted by

Kyoto University Institute for Advanced Study (KUIAS), Kyoto Univ.

Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS), RIKEN

MACS Program (MACS), Kyoto Univ.

Venue: #201, Maskawa Building for Education and Research, North Campus, Kyoto University

Event Official Language: English

## Math Lecture

### Theory of Operator Algebras (3rd)

July 12 at 15:30 - 17:00, 2018

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Venue: Seminar Room #160, 1F Main Research Building, RIKEN

Event Official Language: English

## Colloquium

### Bell's Theorem, Entanglement, Quantum Teleportation and All That

July 19 at 16:00 - 17:30, 2018

Prof. Anthony James Leggett (Professor, University of Illinois at Urbana-Champaign, USA)

iTHEMS-CEMS Joint Colloquium.

Professor Leggett is widely recognized as a world leader in the theory of low-temperature physics, and his pioneering work on superfluidity was recognized by the 2003 Nobel Prize in Physics.

Venue: Okochi Hall, 1F Laser Science Laboratory, RIKEN

Broadcast: #311, Computational Science Research Building, R-CCS, Kobe Campus, RIKEN / SUURI-COOL (Kyoto), #204-205, 2F Maskawa Building for Education and Research, North Campus, Kyoto University / 2F Seminar Room, AIMR Main Building, Advanced Institute for Materials Research (AIMR), Tohoku University

Event Official Language: English

## Seminar

### Number Theory Seminar

July 24 at 10:00 - 12:35, 2018

Dr. Masataka Ono (Keio University)

Dr. Shingo Sugiyama (Nihon University)

Mr. Yoshinosuke Hirakawa (Keio University)

This seminar is aimed at scientists in general, not only to mathematicians.

10:00-10:45 "Multiple zeta functions associated with 2-colored rooted trees" Masataka Ono

10:55-11:40 "Modular forms and trace formulas with applications to equidistributions of their Fourier coefficients" Shingo Sugiyama

11:50-12:35 "On a generalization of Dobinski's formula" Yoshinosuke Hirakawa

Venue: Seminar Room #160, 1F Main Research Building, RIKEN

Event Official Language: English

## Conference

### International Symposium on Quantum Fluids and Solids (QFS)

July 25 - 31, 2018

The International Symposium on Quantum Fluids and Solids (QFS) will be held at Ito International Research Center (IIRC) on Hongo campus of the University of Tokyo, Japan, from July 25 through 31, 2018. One of the sponsors of this conference is iTHEMS.

The QFS series started forty-three years ago making it one of the oldest series of international conferences in the field of low temperature physics. It has historically been focusing on physics of liquid and solid helium and hydrogen. But in this century its scope is expanding widely from laser cooled cold atoms to topological matters. At QFS2018 in Tokyo, this trend will be continued and with even more interdisciplinary aspects emphasized between the traditional subjects and those in broader physical systems.

Venue: Ito International Research Center (IIRC), Hongo Campus, The University of Tokyo

Event Official Language: English

# Person of the Week

## Self-introduction: Genki Ouchi

2018-06-18

I am Genki Ouchi, a SPDR of iTHEMS. I am a mathematician. My research field is algebraic geometry. In algebraic geometry, we study algebraic varieties, that is, spaces described by algebraic equations. Recently, I am interested in symmetry of algebraic varieties: infinite symmetry via complex dynamics and finite symmetry via finite groups.

When I study such subjects, I often use mathematical notion related to string theory like derived categories of coherent sheaves, Bridgeland stability conditions and elliptic genera etc. I would like to find interesting geometric phenomena inspired by outside of algebraic geometry. Moreover, I am happy if there are application of algebras (or mathematics) to other research fields.

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