Artin L-functions associated to continuous representations of the absolute Galois group G_K of a global field K capture a lot of information about G_K as well as arithmetic properties of K.

This research project explores themes related to the system of close protection and surveillance (Dutch: bewaken en beveiligen) in the Netherlands.

Promotor: H.W. Lenstra, Jr., Co-promotor: B. de Smit

With the growth of cybercrime in recent years, there is an urgency to gain insight into the money laundering process and the actors involved. This study focusses on the money laundering process and maps the actors involved in banking malware and ransomware.

This project sets out to map, document and analyze instances of squatting in Leiden from 1970 to 1990, in order to set up an online Digital Archive of Squatting in Leiden. This archive will function as an online resource for academic research, as well as a starting point for public activities such as…

This dissertation addresses the position of artistic research within academia.

Understanding the evolving landscape of extremism in the 21st century.

Early November, a delegation of the Faculty of Science visited two Indonesian universities to shape the collaboration in bioscience. The Faculty also opened a new Indonesian office in Yogyakarta.

Leiden University strengthens the collaboration with the Chinese Xi’an Jiaotong University. The Chinese delegation visited the Faculty of Science to talk about collaborations in the field of life science and data science.

On this page, you can find a short description of the participating researchers.

In November, Springer published a book on The Future of Drone Use, edited by dr. Bart Custers, associate professor at eLaw, the Center for Law and Digital Technologies of Leiden University.

Acquiring and maintaining public support is frequently cited as an important requirement for governments fighting non-state actors. But how exactly can public support influence the course of counterterrorism campaigns and thereby contribute to an escalation or de-escalation of violence?

On 23 January 2020, Paula Kemp defended her thesis 'Enforced performance of commercial sales contracts in the Netherlands, Singapore and China'. The doctoral research was supervised by Prof. H.B. Krans and Prof. M.H. Wissink (RU Groningen).

Contact details and staff overview of the Leiden University Graduate School of Social and Behavioural Sciences.

LUCIS works with Science ON AIR to put its researchers in the spotlight. For that purpose, several online videos of LUCIS members have been produced.

This is a recording of the book launch of Susanna Lindberg's

It has become tradition: the opening of the faculty year in the Hortus Botanicus. This year, too, staff and students of the Faculty of Humanities gathered in the botanical garden on the first Wednesday of September to raise a glass to the new academic year.

Frank Chouraqui, University Lecturer of Philosophy, received the Faculty Teaching Prize during the Opening of the Faculty Year in the City Auditorium. ‘He knows how to make the boring interesting and fun.’

Campus The Hague's Faculty Board has a new member. Mikal Tseggai has passed on the baton to Marlou Grobben, making her this year's faculty assessor. So what exactly does an assessor do? What are Mikal's thoughts as she reflects on the past year and what are Marlou's plans? The two women are more than…

It was pouring with rain during the Opening of the Faculty Year, but in the Oranjerie, Dean Henk te Velde had a positive message for those present: the faculty is in better financial shape than expected, and a reorganisation is therefore off the table.

At the end of October, the Steering Committee, headed by Dean Mark Rutgers, gave the green light for the development of the new Faculty Strategic Plan for 2021-2026. How does this process go?

Two professors from China joining the research and education in Leiden, two Leiden professors going to China to share their knowledge and experiences in return. This is the exchange professorship between the Faculty of Science and Xi'an Jiaotong University (XJTU). This week, all four professors got…

Lotte Fikkers, university lecturer in English literature, received the Faculty Teaching Prize at the opening of the faculty year. ‘She is clearly very passionate about her profession.’

The next building to be renovated as part of the Humanities Campus project is the Van Eyckhof-Van Wijkplaats building. According to the current schedule, renovation work on the Van Eyckhof-Van Wijkplaats building will begin in the summer of 2020. Due to the fact that many classes are held in this building,…

The Faculty of Humanities has made a festive start to the academic year. On 7 September, staff members were able to meet each other at a drinks party in the Hortus botanicus.

The Humanities Faculty Teaching Award has been won by Olja Karmanova. The Russian lecturer was presented with the award during the opening of the faculty year.

The Faculty of Science celebrated the Chinese New Year on 26 January, with an event that was organised together with the Leiden Science China community. After a warm welcome and New Year Wishes by Dean Geert de Snoo, visitors could participate in various activities, such as a calligraphy lesson.

The Faculty of Science has reinforced the collaboration in China during a group trip late November. Representatives from four institutes visited ten Chinese top universities and interviewed over 130 students in PhD workshops in Beijing and Shanghai.

Who were the main artists and producers who generated new forms of popular music? What was the music like that was produced by artists in particular urban settings? How were particular lifestyles articulated to identify new audiences and what does this reveal about the way popular music contributed…

Can excessive worrying be reduced via stimulation of the vagus nerve?

Lange tijd wisten we ons thuis in een wereld die we meenden te hebben. Het bestaan in deze vertrouwde wereld vormde onze existentie, die we op een eigenlijke wijze op ons namen. Thans is de wereld echter niet meer wat hij was, en zijn we ook zelf niet meer wie we waren. ‘De wereld is weg’, zo dichtte…

The Editors of PAIR are always interested in suggestions for themed editions. Anyone wishing to propose a theme and/or to assist as a ‘guest editor’ should contact one of the editors of PAIR.

Philosophy of law is concerned with the the foundations of law.

Who will win this year's Teaching Prize of the Faculty of Humanities? On Thursday September 12th, we will find out during the faculty party in the Stadsgehoorzaal. Prior to the award ceremony you can come and listen to a mini lecture/HUM Talk of the four nominees in which they will give a sneak peek…

Assistant Professor Mike Schmidli has won the 2025 Faculty Teaching Prize. The Education Committee praised his commitment not only to teaching students well, but also to helping them develop into well-rounded individuals.

Thijs Porck, teacher at English Language and Culture, has won the faculty teaching prize. He was lauded for his enthousiasm, his creative ways of teaching, and his commitment to his students.

Much has been said regarding the global flows of information that are characteristic of modernity; it has been frequently stressed that these conduits are so deeply embedded that local or national environments may be imagined as having a global span. Thus, while we are now well aware that the imagination…

This research note argues that the “lone wolf” typology should be fundamentally reconsidered.

The profile area Political Legitimacy brings together researchers from multiple research institutes within Leiden University.

This thesis concerns the relation bettween the good reduction of Shimura varieties and the associated loop groups.

Schuurman examines how Russia is escalating its covert operations against European countries.

In 2012, the Dutch National Coordinator for Security and Counterterrorism and the Dutch Probation Service launched a reintegration project for offenders on probation or parole who were (suspected to be) involved in jihadist extremism or terrorism. The initiative's primary goal was to reduce the chance…

The second and final report on the Netherlands‘ crime-terror nexus has analysed all fourteen profiles of individuals arrested in 2015 for offences of terrorism.

Digitalisation to achieve sustainable (administrative) justice.

Why are people sometimes unable to change, even if they want to? Why is it so difficult to change political institutions, or to abandon outdated ways of thinking? This book suggests that we can understand the phenomenon of resistance to change in individuals and institutions by returning to Hegel, one…

The course is taught by experts from Leiden University’s Institute of Security and Global Affairs (ISGA) and guest speakers from the Centre for Professional Learning (CPL). They bring academic depth and practical experience from the fields of security policy, counterterrorism, and international rela…

As of today, several educational films, lectures and other faculty-related issues can be easily viewed our own Youtube channel! A link to our channel has been placed on our homepage.

A hidden disability can make studying a considerable challenge, partly because of the disability itself, but also because others may not realise that extra support is justified. To overcome this problem, the Faculty of Humanities is introducing the Hidden Disabilities Sunflower.

At the OWL faculty day about 150 newcomers met their fellow students and had a chance to check out the study and research facilities at the Faculty of Science. The OWL introduction week is specially for new international bachelor’s and master’s students at Leiden University.