Japanese mathematician Masaki Kashiwara awarded the Abel Prize 2025

The Norwegian Academy of Science and Letters has decided to award the Abel Prize 2025 to Professor Masaki Kashiwara at Research Institute for Mathematical Sciences (RIMS), Kyoto University, Japan, and Kyoto University Institute for Advanced Study (KUIAS), Kyoto University, Japan.

Masaki Kashiwara has during more than half a century in mathematics opened the door to a new mathematical field. He has built bridges and created tools. He has proven astonishing theorems with methods no one had imagined. He has been a true mathematical visionary.

Like Niels Henrik Abel (1802-1829) himself, Masaki Kashiwara (b.1947) showed excellence already when very young. He remembers his love of algebra being kindled at school by a problem called Tsurukamezan, about calculating the numbers of cranes and turtles, respectively, from knowing the total numbers of heads and legs. He loved being able to generalise a method to solve any problem. From there on he has continued to find new approaches and create new methods to solve mathematical problems throughout his astonishing mathematical life.

At the University of Tokyo, he first encountered his mentor Mikio Sato (1928–2023), by enrolling for his senior year seminar. Sato had founded a new field – algebraic analysis – and in 1970 Kashiwara completed his Master’s thesis under his supervision. This thesis established the foundations of D-Module Theory, a new basis for studying systems of linear differential equations with algebraic analysis, when Kashiwara was just 23. For the next 25 years this thesis remained only available in Japanese, but it continued to have such great impact and influence, that it was eventually translated to English.

Broad spectrum of mathematics

With his Master’s thesis as a starting point, Kashiwara continued his remarkable mathematical career with new and groundbreaking discoveries and solutions. His numerous achievements have exerted great influence on various fields of mathematics and contributed strongly to their development. Over the years many mathematicians have been inspired through Kashiwara’s ideas.

While still a graduate student, Kashiwara travelled to France with Sato and fellow mathematician Takahiro Kawai, where he met his lifelong collaborator, Pierre Schapira. After completing his Ph.D. at Kyoto University in 1974, Kashiwara was appointed Associate Professor at Nagoya University. In 1977 he went as a researcher to MIT, before returning to Japan in 1978, where he has remained ever since at the Research Institute for Mathematical Sciences (RIMS), Kyoto University. He became Professor Emeritus following his retirement in 2010 and has continued his research as Project Professor at RIMS. He has also served as Program-Specific Professor since 2019 at the Kyoto University Institute for Advanced Study (KUIAS), specially established as a hub for the world’s most advanced research.

Read more at the official Abel Prize page. 

A new handbook provides tools for researchers in the science-policy interface

The Finnish Academy of Science and Letters has published a handbook for researchers on science-for-policy.

Pathways to Impact: Researcher’s Handbook on Science-for-Policy is a new handbook published by the Finnish Academy of Science and Letters. It provides strategic tools for strengthening the impact of research in policy-making. It answers questions such as: how is research knowledge transferred to policy-makers? And when is the right time to engage in a policy process?

The handbook can be downloaded from the Finnish Academy website.

“High-quality, multidisciplinary research knowledge is needed to support policy-makers in addressing interconnected societal challenges. Recognising that researchers already face a lot of pressures in their academic work, we wanted to produce a handbook that would make societal impact work more accessible and approachable for researchers. Indeed, we aim to encourage and motivate researchers to engage in societal impact work”, explains knowledge broker Linda Lammensalo.

“The handbook aims to assist researchers in different stages of their careers to excel in their impact work.”

The handbook, for example, outlines different stages of policy-making, with a focus on the Finnish national context. It also includes practical tips from the Finnish Prime Minister’s Office in responding to policy-makers’ knowledge requests. It contains interactive tools to practice and reflect on one’s own experiences and expertise, as well as concrete examples from other researchers who have already engaged in impact work.

According to Lammensalo, the handbook can give researchers a good starting point for their impact work.

“We hope that the handbook will inspire researchers to discover new pathways for increasing the impact of their research.”