This thesis contains results on the arithmetic and geometry of del Pezzo surfaces of degree 1.In Chapter 1 we give the necessary background, assuming the reader is familiar with algebraic geometry.

Arts and culture

Arts and culture

Lecture, Applied African Linguistics

PhD defence

PhD defence

In this thesis integral points on affine del Pezzo surfaces are studied.

Lecture

Leiden psychologist Carsten de Dreu was presented with the Spinoza Prize by Education Minister Van Engelshoven on 12 September. The award of 2.5 million euros will allow him to continue with his pioneering research on group dynamics.

How does the Chinese government communicate with its citizens? Yuxi Nie obtained her PhD with her thesis on communication strategies of the Chinese state media agency Xinhua. She discovered that on social media, Xinhua communicated in different ways, depending on the target group.

Everyone benefits when cooperation runs smoothly However, people often act obstructively. Why do they do that? Professor of Social Psychology Carsten de Dreu researches this issue using a wide variety of methods, from brain scans to the role of religion. Inaugural lecture 7 October.

Leiden social and organisational psychologist Carsten de Dreu has been awarded a Spinoza Prize, the top science prize in the Netherlands. We talked to him about his passion for group processes, Leiden University and his dreams for the future. ‘A Spinoza opens up a world of possibilities.'

With the childcare benefits scandal in the Netherlands, certain interests in society were hidden for long to politics and governance. With the farmers’ protests, on the other hand, the major economic and political interests at stake were hidden for long to society. In her inaugural lecture on 16 September,…

PhD defence

The Convenors of the Standing Group on Interest Groups and the ECPR 2018 Section Chairs, have announced the winners of the best paper awards.

Research has shown that terrorist attacks in the US are more often committed by right-wing extremists than by islamitic extremists. However, news about attacks by right-wing extremists hardly ever reach the media. Jelle van Buuren tells the Dutch newspaper Trouw that right-wing extremists are at least…

Do children growing up in a jihadist or right-wing extremist household develop the same extremist views as their parents?

A particular group of counter protesters have been sighted at numerous Black Lives Matter protests that were held in the United States. An extreme right movement known for its characteristic Hawaii Shirts and heavy weaponry that calls itself the Boogaloo Boys. Which is cause for concern among the American…

This August, the second edition of the Advanced Summer Programme

What motivates people to provide help to, or seek help from other groups? And what are the psychological consequences of receiving help from another group?

How do inclusion and exclusion affect people?

The academic staff of the Leiden University Institute for History.

April 2021 saw the publication of the book ‘Cross-Border Protocols in Insolvencies of Multinational Enterprise Groups’. This book was published by Edward Elgar Publishing. It is written by Ilya Kokorin and Bob Wessels. The book serves as a comprehensive introduction to insolvency protocols and focuses…

The main focus of our research programme is on adolescence, a key transitional period in human development. The programme puts emphasis on combined experimental behavioural and neural analysis of normative transitions and deviations in adolescent development.

This thesis studies the geometry of representation varieties and character stacks. These are spaces parametrizing the representations of a finitely generated group, typically the fundamental group of a compact manifold, into an algebraic group G.

The importance of changing dynamics in global and regional governance is underscored in the group’s contribution to teaching programmes: MSc International Relations and Diplomacy & the minor Global Affairs.

This report concerns itself with terrorist technical innovation, particularly with regards to terrorists’ incorporation of emerging technologies into their practices. More specifically, it investigates, through the elaboration of a theoretical learning framework, how terrorist groups can adopt the practices…

The research group Diplomacy and Global Affairs focuses on international diplomacy, international organisation, global, transnational, multi-level and comparative governance. Among key research topics are the European Union and the United Nations, EU current enlargement policy, rule of law in the EU,…

In the face of threats from other groups, humans, chimpanzees, and a selection of other species get closer with their own. This research shows that even bonobos show a moderated version of this effect. This suggests that this behavior may emerged prior to the Pan-Homo split, several millions years ago.…

Assistant Professor at the Metabolomics group, LUMC, The Nederlands

The programme group Forensic Family and Youth Care Studies is one of the six programme groups within the department of Child and Education Studies at Leiden University.

The focus of the Multicriteria Optimization and Decision Analysis (MODA) group is to develop foundations of methods in multi-objective optimization.

The Homer Reading Group is a ProParte sub-group.

Noah Millman defended his thesis on 26 May 2015

The programme group Clinical Neurodevelopmental Sciences is one of the six groups within the Institute of Child and Education Studies at Leiden University. The group participates in all stages of the education programme: the bachelor's, master's and research master's programme.  The group is particularly…

Research in the natural computing cluster covers theoretical foundations, the development of new algorithms, and interdisciplinary applications of natural computing methods.

The research programme Statistical Science is concerned with the analysis and interpretation of masses of data, the quantification of uncertainty using probability models, and the development and benchmarking of algorithms and methods with these aims.

The researchers in the World Archaeology department of the Faculty of Archaeology concentrate on a range of different periods and regions: from humanity’s origins to the Middle Ages and the modern age, and from Asia to South America.

The master's specialisation Social and Organisational Psychology consists of three main parts: the mandatory and elective courses, a thesis and an internship.

The Institute of Public Administration studies the complex problems facing the public sector in the 21st century, from climate policy to the effects of digitalisation. Its researchers analyse, explain and help come up with solutions to the challenges of society today.

This thesis describes the antimicrobial discovery strategy developed in our group, the den Hertog Group at the Hubrecht Institute. It includes a cultivation-based screening approach for novel antimicrobial agents from the source of fungi, and a bacterial time-lapse imaging approach for antimicrobial…

Cynthia van Vonno, political scientist at Leiden University, explains why individual MPs vote according to the party group line.

This calendar was designed by the Diversity & Inclusion and Student Wellbeing student working group of Leiden Law School.

Within the Institute of Security and Global Affairs, research is organised in seven main research groups:

The program group Learning and Behavior Problems in Education: Challenges and Solutions strive to find solutions to the learning and behavior challenges faced by preschool and elementary-school children, youth, and young adults in education. In doing so, the group focuses on cognition and behavior and…

A new paper written by Jolien van Breen, Soledad de Lemus, Russell Spears & Toon Kuppens in the British Journal of Social Pscychology examines the impact of the 2008-2012 financial crisis on national identity in Spain.

The programme group Research Methods and Statistics offers methodological support in many projects in the field of education and child studies.

The mission of Software and AI in Business (SA&B)connects the domains of science, business, and policy. Scientific research we focus on at Leiden in areas such as artificial intelligence promises to reshape our societies for the better. Translating science into positive societal impact however requires…