On August 29th Rob Tijdeman held his valedictory lecture in a full house Academy Building as a professor in Number Theory, entitled 'My life as a mathematician'. After his lecture he was appointed, in name of the Queen, Knight in the Order of the Dutch Lion by the maior of Leiderdorp.

On 11 February 2020, Clara van Dam defended her thesis 'Guidance documents of the European Commission in the Dutch legal order'. The doctoral research was supervised by Prof. W. den Ouden and Prof. J.E. van den Brink (UvA).

In this article, Amandine Lerusse, investigates how the order of performance information affects local politicians’ issue prioritisation decisions.

On 23 April, Rowie Stolk defended the thesis 'Interest group litigation in the Dutch polder: An interdisciplinary perspective on access to the courts'. The doctoral research was supervised by Ymre Schuurmans and Jerfi Uzman.

This research evaluates the Youth Act. It will provide an overview of how the transition takes place, whether the transformation process develops in the right direction and whether the legal safeguards are functioning properly.

Description of 20th century changes in the Dutch flora: Description and interpretation (1999 - 2005)

Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn

Dr. Cátia Antunes and prof. Jos Gommans both edited and contributed to this interesting book, that consists of articles that offers a new insight into the macro and micro worlds of the global Dutchman in Asia.

How did the Dutch Empire compare with other imperial enterprises? And how was it experienced by the indigenous peoples who became part of this colonial power?

Leiden University and the Dutch Royal Family maintain ties that go back to 1575, when William of Orange founded the University. Many members of the Royal Family have studied in Leiden and several have received an honorary doctorate.

This book examines how Muslim communities in the Netherlands perceive and experience extremism, counter-radicalisation policies, and Islamophobia.

On 25 January 2018 Yannick van den Brink defended his doctoral thesis titled ‘Voorlopige hechtenis in het Nederlands jeugdstrafrecht’ (‘Pre-trial detention in the Dutch juvenile justice system’). The doctoral research is supervised by Professor Ton Liefaard and Professor Mariëlle Bruning.

To what extent is the legislation and use of pre-trial detention of juveniles in the Netherlands in compliance with international children’s rights standards?

This article presents an in-depth evaluation of a specialized reintegration initiative within the Dutch Probation Service focused on individuals convicted or suspected of involvement in terrorism.

Political scientists Tom Louwerse, Simon Otjes & Cynthia van Vonno introduce the Dutch Parliamentary Behaviour Dataset, a record of parliamentary (voting) behaviour in the Dutch Tweede Kamer (Second Chamber, House of Representatives) since 1945.

LIACS prof. Grzegorz Rozenberg is one of the world leaders in research on Theoretical Computer Science and Natural Computing. He is often called the guru of Natural Computing.

LIACS prof. Grzegorz Rozenberg is one of the world leaders in research on Theoretical Computer Science and Natural Computing. He is often called the guru of Natural Computing.

An overview of awards and prizes granted to our staff and students in 2018, as well as special appointments and royal distinctions.

This book explores the intellectual history of the Dutch empire from the sixteenth century to the postcolonial era, going beyond systemic thinkers to understand how empire was perceived in day-to-day life. It takes a transnational and transimperial approach to the Dutch empire, connecting European,…

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…

How do first-hand narratives of war of commanders in the front line relate to the official narrative of the Eighty Years’ War?

A lecture about the drive, dynamics and dilemmas of our central bank and supervisor. Joanne Kellerman discussed the role of DNB, the central bank in our country for already 200 years, and the dilemmas that a supervisor faces. How can be ensured that a supervisory intervention is rightly timed and that…

Resilient Diversity: the Governance of Racial and Religious Plurality in the Dutch Empire, 1600-1800

Caribbean archaeological heritage is threatened by natural impacts but also increasingly by economic developments, often resulting from the tourist industry. The continuous construction of specific projects for tourists, accompanied by illegal practices such as looting and sand mining, have major impacts…

On the 23d of May, Sanne Rotmeijer successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Sanne on this achievement!

Emily Wolff, PhD candidate at Leiden University, wrote a paper about the inclusion of imperial citizens in the Dutch post-war welfare state.

This research will investigate which aspects of On the sublime received attention in the intellectual milieu of the seventeenth century and how the sublime found its way in the political and artistic discourse of that time. Thus I aim to shed light on the role of art in politics and society in this…

The Dutch and English East India Companies were formidable organizations that were gifted with expansive powers that allowed them to conduct diplomacy, wage war and seize territorial possessions. But they did not move into an empty arena in which they were free to deploy these powers without resista…

On the 22nd of February, Ami Okabe successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Ami on this achievement!

This book provides an overview of critical scholarly reflections on the history of Dutch slavery and colonization, as well as how this translates into critical cultural practices.

How to minimalize the chance of recidivism for extremist prisoners.

This subproject examines the development of memory cultures, the meaning of memories of the Dutch Revolt, the multimedia aspect of the creation of a local memory culture, which artefacts were used to keep memories alive and the differences between local memory cultures in the Repubilc and the Southern…

Fighting for the faith, caring for the sick, and praying for the soul of their benefactors were the main tasks of the military orders, who since the time of the crusades were well represented in the Netherlands in the Middle Ages, including the Frisian lands. Especially the Hospitallers and the Teutonic…

Political scientists Joop van Holsteyn and Tom Louwerse (Leiden University) find that the Dutch government is having a hard time coping with referendum outcomes in general, and ‘anti-European’ sentiments among voters in particular.

Many of our staff and students have won an award, received a grant, obtained an academic fellowship for their quality or have been socially engaged due to their specific expertise. See below for an overview per year.

Numerous beads and pendants of amber, jet and bone have been found in Dutch Neolithic and Bronze Age context, both in settlements and in graves. Because ornaments are personal items, they are closely linked with people’s identity.

During the SoLaR Young Researchers Platform, which took place on 14 March 2018 in Maastricht, Clara van Dam presented her ongoing research on the role of Habitat guidance documents in the Dutch legal order.

On 5 October, Katherine Filesia defended the thesis 'Speaking the same language: the introduction of the Anglo-American trust into the Dutch legal system'. The doctoral research was supervised by Pim Huijgen and Frans Sonneveldt.

Who tried to influence the mission and position of the Dutch security services between 1912 and 1992, what effect did that have on the form and contents of the security services? How to account for transformations of the security services?

Religion, Class, and the Postwar Development of the Dutch Welfare State. Dennie Oude Nijhuis.

Homicide engenders broad moral concerns in society, and its aftermath can be understood as a barometer for criminal justice policy. Of all homicides committed, however, only some lead to arrest, to prosecution and ultimately to conviction in court.

How did free agents oppose the monopolies held by the VOC and WIC in court?

On the 30th of September Christine Ketel successfully defended a doctoral thesis and graduated.

Between 1600 and 1800 countless manuals appeared on the subject: the improvised bass part on the harpsichord, pianoforte or organ. Musician and researcher Kathryn Cok unravels the secrets of the Dutch basso continuo accompaniment for modern-day musicians.

On 31 January 2014 Professor Willem Heiser (Psychology, Statistics and Data Theory) was awarded the distinction of Knight in the Order of the Dutch Lion. After his farewell lecture he received the royal honour for his exceptional academic, social and administrative achievements.

Linguist Willem Adelaar was appointed to Knight in the Order of the Dutch Lion on October 1st. On that very same day he celebrated his 43-year connection to Leiden University. Adelaar has an impressive track record in the field of indigenous, and often endangered, Amerindian languages.

The remains of Dutch East India Company forts are scattered throughout littoral Asia and Africa. But how important were the specific characteristics of European bastion-trace fortifications to early modern European expansion?

The project explores the impact of the clash between defenders of a rules-based order and international law on global governance and the future of legal systems.

The Schoof cabinet has several plans that are just not legally feasible. Yet they are often still forced through, knowing, or even hoping, that the courts will intervene. This is dangerous policy that in the long run even undermines trust in politics, the judiciary, and the law itself, argues Armin…

Promotores: H.A. Udo De Haes, P.M. Brakefield