Promotie

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

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.

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

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

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.

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

The focus of the dissertation

In de geest van ‘eenheid door verscheidenheid’ is ons doel het bevorderen van inzicht in en waardering voor het wonder dat dezelfde natuurkundige wetten en wiskundige concepten van toepassing zijn op de hele natuur, van de grootste tot de kleinste energie- en lengteschalen. Wij streven naar de toepassing…

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

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.

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

Promotor: A.W. van der Vaart

This thesis mainly extends the theory of positive operators on Riesz spaces to a setting of pre-Riesz spaces.

Promotor: Peter Stevenhagen

Congres/symposium

Promotie

The aims of the project are to: further clarify 'inhibition by safety'; explore and describe all possible sagety factors, with a special focus on the primary human safety source: social connectedness; reviewing prolonged stress responses without stressors.

Promotor: Prof.dr. H.J.M. de Groot, Co-promotor: Francesco Buda

Promotor: H.W. Lenstra

In this thesis three different topics in number theory are studied.

Bekijk de aanmelding- en toelatingsprocedure voor Political Theory: Legitimacy and Justice (MSc) aan Universiteit Leiden: vereiste bacheloropleiding, aantal ECTS, en eventuele taal‑ of portfolio-eisen.

Promotors: Prof.dr. J. Zaanen, Prof.dr.ir. H. Hilgenkamp

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

Promotor: H.W. Lenstra

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),…

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

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

In this thesis, we show that we can use Shimura’s CM theory to explicitly compute the Hilbert class field of any primitive quartic CM field.

Bekijk de toelatingseisen voor de MSc Nederlandse Politiek aan Universiteit Leiden: vereiste bacheloropleiding, academische credits en taalvaardigheidseisen.

Promotores: Prof.dr. F.S. de Boer, Prof.dr. J.J.M.M. Rutten (Radboud Universiteit Nijmegen)

Fundamental research in the ALgebra, Geometry And Number Theory

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

In this thesis, we present new laboratory data of interstellar dust analogues.

This dissertation is organised into three parts, each addressing a distinct research area related to Gibbs measures.

Promotor: Prof.dr. A. Achucarro

Promotor: F. Arbab

Op 1 april 2020 verdedigde Marc Broekema zijn proefschrift 'Cognitive Bias in the Judgment of Business Valuations and Valuators'. Het promotieonderzoek is begeleid door promotor prof. dr. J.I. van der Rest.

In this thesis we will explore the use of fuzzy systems theory for applications in bioinformatics.