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.

The Laiseang archiving project ensures the preservation of unique records of languages in the region which have been gathered by more than two dozen linguists at, and in collaboration with Dutch universities over the last 40 years.

Negotiation can only really be an alternative to warfare, if the parties agree on a framework of rules and procedures. And if the confidence of the partners may increase in another. But negotiations continue to wage war by peaceful means.

The Old Observatory is located on the grounds of the Hortus. This is the oldest surviving university observatory in the world. Since 1633, the University of Leiden has used the various rooms for the education of students. The Visitor Center on the ground floor of the Old Observatory is part of the Hortus…

On the 27th of June, Timothy Mac Hadjah successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Timothy on this achievement!

Artistic research has come of age, and with it the Orpheus Institute. Founded twenty years ago, the Institute’s purpose from the start has been to pursue research through the practice of musicians.

Nowadays, most Europeans speak a language belonging to the Indo-European language family. However, very different languages were spoken on our continent before the arrival of the Indo-Europeans. The EUROLITHIC project tries to find answers to the question which languages these were and where they came…

On Wednesday, 14 May 2025, Catherine O'Regan will deliver the annual Van Vollenhoven Lecture

In the last decades, activity-based protein profiling (ABPP) has emerged as a powerful chemical tool that may aid the ever-challenging drug discovery process.

Archaeological and related essays on the Jordan Valley in honour of Gerrit van der Kooij on the occasion of his sixty-fifth birthday

From where litter ends up to which languages are spoken in Leiden and The Hague: over 50 interesting, surprising, complex and entertaining questions were sent in for the Citizen Science project to mark our 444th anniversary. Not one but two Citizen Science projects will be starting this year in Leiden…

Although migration and integration have become important concepts today as a result of globalization, migration movements, integration, and multiculturalism have always been part of the history of Europe. Few people realize how many ethnic groups participated in migration within Europe or into Europe…

The Greek and Roman History Team concentrates on the study of the economies, societies and cultures of the large empires of the Graeco-Roman world, starting with the empires of Alexander the Great and his successors.

Note: use Chrome as browser!

Due to the almost complete disappearance of the archive of the Old Dutch West India Company (WIC, 1621-1674) not much is known about the ships and crews of this company. In this project we start the reconstruction of this basic information making use of new digital humanities techniques to extract this…

This is a yearly event where we move in one week from the physics of light through the composition of the microscope, fluorescence microscopy and end up with some image analysis All the lectures are backed by practicals to really put your obtained knowledge into practice

‘Hey, look! There’s Rembrandt van Rijn! And isn’t that Princess Beatrix?’ Keep your eyes peeled during the 444 manhunt on 29 June and you may just bump into a host of celebrities from the past and the present.

How do we process language and speech? How do we integrate information at different levels – intonation, sentence structure, meaning, tone, words, sounds - and how does information at one level interact with information at another level?

In this dissertation, matching, entropy, holes and expansions come together. The first chapter is an introduction to ergodic theory and dynamical systems.

Essays in Honour of Olivier P. Nieuwenhuyse

The National-Socialist Movement in the Netherlands - the NSB - remained the only legal party in the Netherlands during most of the Second World War.

Would you like to teach at a secondary school, but don't yet have a teaching qualification and are not yet proficient in Dutch? ICLON Leiden University is developing a special programme for internationals.

The aim of this project is to get a clear overview of sustainability efforts being made within the faculties, as well as making lasting connections with and between university staff and students involved in these efforts. The Leiden University Green Office (LUGO) aims to play a connecting role in this…

Do you have any questions about the Industrial Ecology master’s programme? Please contact us! It is also possible to schedule a call with our study advisors or one of our students. Moreover, we have online Walk-In hours every third Friday of the month.

Arts and leisure, Arts and leisure

The International Arbitration Training Course, offered by Leiden Law School in cooperation with the Permanent Court of Arbitration, focuses on the theory and practice of international arbitration as a distinct field of the law and field of legal practice.

The Summer School on International Humanitarian Law is designed by the Grotius Centre Kalshoven-Gieskes Forum on International Humanitarian Law.

Lecture

Study information, Workshop

How should European financial law best integrate considering the interaction of the relevant legal systems?

Past, Present and Future of Nubian Communities in Sudan

The dissociative chemisorption of a molecule on a transition metal surface represents a rate-limiting step in many heterogeneously catalyzed processes, whereby most chemicals are made. In spite of the importance of this reaction, an accurate first principles approach to modeling it does not yet exist.…

The research question is that unconscious perseverative cognition (UPC) is responsible for a considerable part of cardiovascular (CV) activity that occurs even in the absence of threats and other stressors that one may encounter in one’s daily life.

This is an Erasmus+ International Credit Mobility project of Leiden University Medical Centre with University of Havana.

Studies on the Disappearance of the Amphora Phenomenon

Subproject of

To complete your application for LUC The Hague, you need to submit all of the required documents in the Leiden University application portal (uSis).

Here we provide information on the ways through which the Institute of Psychology aims to foster responsible scholarship practices: conducting research with integrity, and meeting the needs for better quality and efficiency in psychological science.

The coastal site of Butrint is situated on a peninsula in south-western Albania, opposite the island of Corfu and Apulia in southern Italy (across the Adriatic Sea). In Medieval times, Butrint served as a connecting bridge between East and West – between Byzantium and the Latin world.

From taking general introductions to developing your personal specialty; on topics ranging from the city council to the ‘new world order’; with forays into economics, history and philosophy: during Politicologie: Nationale en Internationale Politiek, a world will open up for you.