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

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

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

Promotor: Robert Tijdeman, Co-promotor: Cornelis Kraaikamp

Professor Edwin Bakker, directeur van het Centrum voor Terrorisme & Contraterrorisme heeft zijn nieuwe boek getiteld 'Terrorism and Counterterrorism Studies: Comparing Theory and Practice' bij Leiden University Press uitgebracht.

In het nieuwste nummer van het blad ‘The Theory and Practice of Legislation’ staat een bijdrage van Jelle But, Demy Jongkind en Wim Voermans.

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

Promotor: Prof.dr. C.W.J. Beenakker

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

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

Dissociative chemisorption is an important reaction step in many catalytic reactions.

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.

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

Waarom spraken negentiende-eeuwse wetenschappers zo graag over toewijding, vlijt en ijver? Waarom wijdde Robert Fruin zijn oratie aan onpartijdigheid en riep Abraham Kuenen zijn studenten op tot waarheidsliefde?

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

Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.

One of the effects of climate change is the phenomenon of desertification, a process that occurs in semi-arid and arid areas and causes land degradation as well as vegetation loss. Due to the lack of resources, vegetation self-organizes to sustain itself by forming large-scale spatial patterns.

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

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

In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.

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…

Promotor: S.J. Edixhoven

Dit project onderzoekt de bevolkingsdynamiek in het westen van Zuid-Amerika op basis van sporen in de geografische, genetische, archeologische, etnologische en taalkundige gegevens.

Het Hazelhoff Centre for Financial Law is onderdeel van de afdeling Ondernemingsrecht en Financieel recht en verzorgt onderwijs en doet onderzoek op het terrein van financieel recht.

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

Tegenwoordig spreken de meeste Europeanen een taal die behoort tot de Indo-Europese taalfamilie. Maar welke talen of taalfamilies werden er in Europa gesproken vóór de komst van de Indo-Europeanen? Het EUROLITHIC-project zoekt antwoorden op deze vraag.

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.

Promotor: H.W. Lenstra

Stochastic resetting is simple enough to be approached analytically, yet modifies stochastic processes in a non-trivial way.

One of the most important correlation functions in physics, especially in cosmology, is the energy density, which describes how much energy is present at each point in spacetime due to matter fields. A key contribution to the energy density of the primordial universe comes from gravitational waves (GWs),…

Promotoren: R. Tijdeman, A.K. Lenstra, Co-promotor: H.J.J. te Riele

Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

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.

Onderzoek naar het precieze taal- en spraakgedrag van sprekers.

Promotor: Peter Stevenhagen

Combinatorial games are games for two competing players, moving in a turn-by-turn fashion, in which there is no chance nor hidden information⁠. Chess, checkers and the simpler tic tac toe are well-known examples of this class of games, as well as game of go⁠.

Large carnivores and humans, along with their livestock, have co-existed for thousands of years. However, human population growth and an increase in economic activities are modifying the landscape for large carnivores and their prey.

Het onderzoek in het natural computing cluster omvat theoretische fundamenten, de ontwikkeling van nieuwe algoritmen en interdisciplinaire toepassingen van natuurlijke computermethoden. De drijvende kracht achter hun onderzoek is de missie om het begrip van natuurlijke systemen als rekenmodellen te…

This thesis is comprised of three chapters covering the theme of studying semistable varieties by looking at their dual combinatorial objects.

The focus of the dissertation

Het doel van het MODOMA-project is om een computermodel van taalverwerving te maken.

Op 7 november promoveert Rasmus Thorsø Nielsen. Het Leiden University Centre for Linguistics feliciteert Rasmus!