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

Promotores: S.J. Edixhoven, F. Andreatta

Where did the new generation of antislavery activists get their inspiration to organize in large-scale pressure groups?

Promotor: Prof.dr. H.W. Lenstra

The unit residue group, to which the present thesis is devoted, is defined using the norm-residue symbol, which Hilbert introduced into algebraic number theory in 1897.

What legislative and regulatory questions arise when children, adolescents or elderly people use the Internet?

The research at The Metabolomics & Analytics Centre is centered around developing innovating analytical methods to enable metabolomics-driven systems biology in personalized health strategies.

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Strategic direction of the GTGC initiative lies with a Steering Group, composed of seven members from four Leiden University faculties. Chaired by Leiden's Professor of Global Transformations and Governance Challenges, the Steering Group addresses questions such as overall vision, staffing, communications,…

Healthy University Leiden consists of a taskforce, focus group and seminars.

Several so-called Special Interest Groups are linked to DSRP. These groups focus on specialized topics and organize their own group meetings, talks etc. Contact the group leader if you are interested to join. It is possible to be a member of multiple groups.

Promotor: P. Stevenhagen, Co-promotores: B. de Smit, F. Andreatta

The Faculty of Humanities has two advisory groups for Diversty & Inclusion: one for staff members and one for students.

Promotores: H.W. Lenstra, A. Lucchini

Weekly Friday morning BPOC/SSNMR group meetings.

The China Region Group develops and monitors Leiden University's cooperation with China. It is chaired by the Dean of the Faculty of Science, Prof. Jasper Knoester, and consists of representatives of Leiden University's faculties and various policy departments.

The Royal Academy of Art and the Royal Conservatoire together with the Academy of Creative and Performing Arts (ACPA) at Leiden University are developing a new platform for research in and with the arts, with an emphasis on collaboration.

The LOFAR e-infrastructure group is responsible for deploying and maintaining LOFAR processing on distributed e-infrastructure. A co-operation between SURFsara, Leiden University and ASTRON, the group develops software to integrate the LOFAR stack with processing pipelines. Our software can schedule…

The Computer Support group provides dedicated support for the computing infrastructure of Leiden Observatory

Every PhD candidate has access to MS Teams ‘LACDR PhD group’. This site is specially for PhD candidates of LACDR. We strive to collect here all relevant PhD information and to stimulate the collaboration and communication in the LACDR PhD community.

In my research, we developed a method to distinguish knots. A knot is a mathematical depiction of the everyday knot that occurs in ropes and cords.

Leiden University has a rich history in the domain of Papyrology. Papyrology+, founded in 2014, is a collaboration of Leiden scholars studying (Abnormal) Hieratic, Demotic, Aramaic, Greek, Latin, Coptic, and Arabic papyri from a socio-historical, economic and linguistic perspective.

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The extensive use of electronic communication channels and other devices has opened new possibilities for collecting data on human behavior. This information is sometimes openly accessible, but largely part of administrative registration systems that are not open to the broader public. The data provides…

Promotor: S.M. Verduyn Lunel, Co-promotores: M.F.E. de Jeu, B. de Pagter

We examine the effect of social learning on emotional competence in children and adolescents with a typical or atypical development.

In this thesis we classify the pairs (p,G), where p is a prime number and G is a finite p-group possessing an intense automorphism, i.e. an automorphism that sends each subgroup of G to a G-conjugate, that is non-trivial and whose order is coprime to p.

Researchers at Leiden study group behaviour. One of their findings is that when people make sacrifices for another member of their group, it is probably instinctive. Insights of this kind enable us to better understand and influence the social processes in a neighbourhood or company.

Collaboration is increasingly common among teachers in schools. As such, teacher education should prepare prospective teachers to effectively interact with other teachers in different types of communities or groups.

The main topic of this PhD thesis is the Arakelov ray class group of a number field, an algebraic object that contains both the ideal class group structure and the unit group structure.

Health Data Science Leiden University

This dissertation is a collection of four research articles devoted to the study of Kummer theory for commutative algebraic groups.

The programme group Clinical Neurodevelopment Sciences is located in the Faculty of Social and Behavioural Sciences of Leiden University near Central Station.

The programme group Educational Sciences is located in the Faculty of Social and Behavioural Sciences of Leiden University near Central Station.

The focus of our theoretical physics research is the nature of macroscopic matter that is in one or the other way still in the grip of quantum physics.

Our research primarily focuses on the early universe and its origins in theories that go beyond the Standard Model of particle physics.

Our world is shrinking, or at least our electronic devices are. From PCs to mobile phones: everything is smaller and thinner. The smaller the chip, the better it can conduct electricity and pass on information.

Arts and leisure

Arts and leisure

The research group ‘Quantum and Society’ explores the boundary between quantum technology and science communication.

This minor focuses on how our thoughts, emotions and behaviour are influenced by other people, and how we influence other people.

My work is motivated by the necessity to extend Standard Model of Particle Physics in order to explain three observed phenomena that this great theory fails to accommodate

People are less willing to give up an interest when in a negotiation situation than when they can do it of their own free will, as Leiden University psychologist Eric van Dijk discovered. Knowledge of this kind can be used by policy makers, for instance, to motivate people to adopt certain desirable…

Health inequities, obesity among children, loneliness, performance stress among youngsters. What are the drivers behind such ‘wicked problems’ and how might they be related? This interdisciplinary minor offers you the possibility to work with societal partners to gain a deeper understanding of real-life…

We are cosmologists, in other words we use physics to study the Universe, how it started and evolved into the structure that we observe around us.

We are interested in understanding the mechanics of soft materials, of which biological materials are prominent examples.

Promotor: Prof.dr. P. Stevenhagen & Prof.dr. K. Belabas (Univ. de Bordeaux)

Promotores: P. Stevenhagen, E. Fouvry (Univeriste Paris Saclay)