Marianne Maeckelbergh, an anthropologist affiliated with Leiden University’s Institute of Cultural Anthropology and Developent Sociolog, has been awarded a WCC ‘Special Recognition Award’. This awards brings Marianne Maeckelberg official recognition as ‘young outstanding researcher’.

OSCNL, the international network of Open Science Communities, receives recognition

The Computer Systems, Imagery & media (CSI) research programme performs research on methods and techniques for the design, implementation and application of advanced computer systems, in particular parallel, distributed and embedded computer systems.

Marike Knoef has won an award on the 34th Award Ceremony of the World Cultural Council (WCC).

Just imagine new AI technology is able to read human emotions flawlessly. How would that affect us as humans? That is the question PhD candidate Alexandra Prégent is exploring.

The first book ever on information-theoretically secure multiparty computation

Five talks will be given during the Leiden Science Family Day: two children's lectures and three lectures for adults. Will you be there ?

Leiden University and VU Amsterdam are developing a joint research project for a digital platform on which you can compose and share storylines with the use of images. Such interactivity will make a boring high school history lesson much more exciting and personalized. Furthermore, it will stimulate…

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A festive and honourable visit to our southern neighbours for professor Marc Koper. On Thursday 23 March, he received an honorary doctorate at the University of Antwerp. Koper gets the title in recognition of his expertise in the field of electrochemistry. ‘An important recognition for our research…

On 4 June 2018, students of the Forensic Speech Science master’s course visited the Netherlands Forensic Institute (NFI) in The Hague. They were presented with practical examples, such as speech research with voice recordings of suspects. Forensic phonetics is a young, rapidly developing discipline…

Ayo Adedokun, Assistant Professor at Leiden University College The Hague (LUC), was one of the four finalists for the National Teacher of the Year Prize for 2022. The National Prize is an annual event organized by the Dutch National Students Association (Interstedelijk Studenten Overleg, ISO), and the…

The aim of this thesis is to present novel techniques for proving cryptographic schemes secure against quantum adversaries. Most results are within the context of an idealized model called the ‘quantum random-oracle model’.

The German state of Saxony-Anhalt is set to make recognition of the state of Israel a requirement for becoming a German citizen. However, Peter Rodrigues, Emeritus Professor of Immigration Law, has told Dutch daily newspaper Nederlands Dagblad that introducing a similar measure in the Netherlands would…

Software development is a complex process. It is important that software products become stable and maintainable assets.

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.

In this thesis we examine certain phenomena in symplectic topology which are related to the theory of isolated singularities.

We show that Kirchhoff ’s law of conservation holds for non-commutative graph flows if and only if the graph is planar. We generalize the theory of (Euclidean) lattices to infinite dimension and consider the ring of algebraic integers as such a lattice.

Promotor: P. Stevenhagen, Co-promotor: R.M. van Luijk

Today, knowledge is the most crucial element to stimulate organizational competitiveness and economic development.

The Alumni Office is happy and proud: the 'Leiden did not forget you' days of spring 2023 have won an award from the Council for Advancement and Support of Education (CASE). CASE is a global non-profit organisation dedicated to the advancement of university education. This award, which is one of the…

When Petra Sijpesteijn became a member of the Académie des Inscriptions et Belles-Lettres, she was the only Dutch member with an appointment at a Dutch university. Two years later, she is also the only Dutch member of the Austrian Academy and officially joined the British Academy on 7 October.

Promotores: P. Stevenhagen, L. van Geemen Co-promotor: R.M. van Luijk

In this thesis, we explore a Hochschild homology and cohomology-like notion for logarithmic schemes.

In this thesis we study products of linear error correcting codes.

Police investigations use wiretapped phone recordings as investigative material fairly regularly. But how do they know that the voice on the recording actually belongs to the suspect? PhD student Laura Smorenburg is trying to answer that question.

Whereas most outgoing professors are offered a congress, Nico Kaptein's former students and PhD students took a bigger approach. They treated him not only to a farewell congress, but also to a two-week tour of Indonesia, filled with lectures, and trips.

University lecturer Aya Ezawa has received a Certificate of Commendation from the Japanese Embassy in the Netherlands for her efforts to promote reconciliation between the Netherlands and Japan, in particular by supporting Japanese-Indonesian war children. As a member of the Foundation for War Victims…

Promotor: Prof.dr. J.N. Kok, Co-promotor: F.J. Verbeek

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.

This dissertation presents new cryptographic protocols, which can be divided into two families.

This PhD thesis concerns the topic of arithmetic geometry. We address three different questions and each of the questions in some way is about counting how big some set is or can be.

Aristocratic dynasties have long been regarded as fundamental to the development of early modern society and government. Yet recent work by political historians has increasingly questioned the dominant role of ruling families in state formation, underlining instead the continued importance and independence…

In this thesis, rational points on K3 surfaces are studied. In the first part of Chapter 1 the Brauer group and the the Brauer-Manin obstruction are introduced.

Promotor: Ronald Cramer, Co-promotor: Serge Fehr

Promotor: R. Cramer

Arie van Steensel and Ariadne Schmidt (eds.)

Promotores: R. Cramer, A.K. Lenstra, Co-Promotor: B.M.M. de Weger

Fundamental research in the ALgebra, Geometry And Number Theory

How did you get to where you are now? This is a key question in the Academic Life Course board game, developed by and for academics. ‘In a normal working week we hardly ever talk about the career choices we make, but with this game, we do.’

Lecture

In analogy to mathematical proofs, the goal of a proof system is for a prover to convince a verifier of the correctness of a claim.

On the 16th of May, Qing Yang successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Qing on this achievement!

Atherosclerosis is the most prominent underlying pathology of cardiovascular disease and an important cause of major adverse cardiovascular events.

The 21st century is witnessing a revolution in our understanding of rational points on surfaces and higher-dimensional varieties, and it is in this field that this project lies.

In the South African context, certain iconic images have been a dominant source for public understandings of historical events. The emphasis given these images tends to overshadow the historical value of other more personal photographic sources – like studio or amateur photography. This project looks…

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.