In June of this year, LL.M student Matthijs de Meer visited the East African Court of Justice for an internship.

Promotor: W.Th.F. den Hollander Co-Promotor: F.M. Spieksma

Promotor: Prof.dr. A. Achucarro, Co-Promotor: J.W. van Holten

In this thesis we study the landscape of gravitational models which modify GR by introducing an additional scalar degree of freedom (d.o.f.) to source Cosmic Acceleration.

This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.

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.

Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris

Promotor: F. Arbab, R. De Nicola, Co-Promotor: M. Tribastone

This dissertation focused on computational methods based on first principles calculations using the Density Functional Theory (DFT) framework. Emphasis was laid on affordable methods that can provide a tradeoff between computational expense and accuracy.

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

The Encyclopedia of Global Human Migration provides a complete exploration of the prominent themes, events, and theoretical underpinnings of the movements of human populations from prehistory to the present day.

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

In this thesis,

To an algebraic curve C over the complex numbers one can associate a non-negative integer g, the genus, as a measure of its complexity.

In ‘Dimensions of Free Speech’, Devrim Kabasakal Badamchi (Leiden University Institute of Political Science) offers a new theoretical framework for free speech by critically analysing the major justifications for free speech. Kabasakal Badamchi argues for a justification: namely the double-grounded…

Political scientists Huib Pellikaan and Niels van Willigen (Leiden University) use and elaborate on the theoretical insights from game theory in order to understand nuclear security in changing environment. Now that the relations between the US and Russia have deteriorated and smaller nuclear states…

Promotor: A. Doelman, Co-promotor: M.F.E. de Jeu

Promotor: Robert Tijdeman, Co-promotor: Cornelis Kraaikamp

Chapter 1,contains the numerical verification of the Birch and Swinnerton-Dyer conjecture for hundreds of Jacobians of hyperelliptic curves of genus 2, 3, 4 and 5.

Promotor: G. J. Kroes

This project is situated within the context of an innovation of the biology curriculum in Dutch secondary schools. The main purposes are (1) to clarify the relation between teachers’ practical knowledge and the decisions they make when planning and implementing their lessons and (2) to develop a professional…

In his dissertation Gabriel Paiuk explores the variable ways in which what is heard is formed. To address this, he postulates a novel concept of sound image in a post-anthropocentric context in which both mind and material artefacts are instances across which the image occurs, rather than hosts on which…

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

Alice Twemlow has been named professor by special appointment in the Wim Crouwel chair in the History, Theory and Sociology of Graphic Design and Visual Culture at the Faculty of Humanities of the University of Amsterdam.

Promotor: S.J. Edixhoven Co-promotor: L. van Geemen, P. Parent

Connecting Agriculture, Crafts, Construction, Transport, and Resilience Strategies

This thesis contributes to studying primordial cosmology theories and their detectability in future observations.

To what extent and how do identity processes influence health behavior?

Professor Renata Kallosh (Stanford University), one of the world’s leading theoretical physicists, will be this summer’s Lorentz Professor at the Leiden institute for theoretical physics. Her main areas of interest are cosmology and string theory. She studied physics in Moscow, where she also obtained…

This thesis studies operator-algebraic aspects of subproduct systems, a generalization of product systems of Hilbert spaces.

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Promotor: Ronald Cramer, Co-promotor: Serge Fehr

Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.

Combining geometry and number theory. That is what Dr Jan Vonk of the Institute of Mathematics receives a Vidi grant for today. ‘By fusing these two disciplines we may be able to solve a century-old mathematical problem.’

Leiden PhD student Peter Koymans has been declared ‘best mathematics PhD student’ by the Royal Dutch Mathematical Society (KWG). He received the prize at the Dutch Mathematical Congress (NMC) on 24 and 25 April. With his talk about his research into the Cohen-Lenstra conjecture, Koymans left eleven…

In the spirit of 'unity in diversity', our objective is to promote insight into and appreciation for the wonder that the same physical laws and mathematical concepts apply to the whole of nature, from the largest to the smallest energy and length scales. We strive for the application of abstract theoretical…

Promotor: S.M. Verduyn Lunel, Co-Promotor: O.W. van Gaans

Promotor: C.W.J. Beenakker, Co-promotor: M.T. Wimmer

On November 6th PhDArts Co-Director Dr. Janneke Wesseling has given a keynote presentation, entitled “On Methodology”, at the Symposium Conversations on Artistic Research in Porto (PRT).

This subproject of 'From Homo Economicus to Political Animal' analyzes Greek economic thinking of the Hellenistic period.

The work in this thesis demonstrates how to obtain an atomic-scale picture of a diverse set of complex surface structures observed using STM, under disparate conditions.

Most of current public-key cryptography is considered insecure against attacks from sufficiently powerful quantum computers. Post-quantum cryptography studies methods to secure information resistant against such attacks. One proposal is isogeny-based cryptography, which bases its security on computational…

In this thesis, we address two problems concerning the tautological rings of the moduli space of curves.

PhD defence