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

Promotor: H.W. Lenstra

Promotor: A. Doelman, Co-promotor: V. Rottschäfer

Promotor: S.M. Verduyn Lunel

Promotor: R. Tijdeman

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

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

Promotor: S.M. Verduyn Lunel

On 29 September 2020, Tom van Ham defended his thesis 'Collective violence offenders and offending. The role of individual characteristics'. The doctoral research was supervised by Prof. A.A.J. Blokland, Prof. O.M.J. Adang (RUG) and Prof. Th.A.H. Doreleijers (VUMC).

PhD defence

Promotor: S.J. Edixhoven, L.D.J. Taelman

PhD defence

Promotor: Prof.dr. R. Verpoorte, Co-promotores: Dr. Y.H.Choi, N.R. Mustafa

In this research project characteristics of effective instructional development were identified that are appealing to medical teachers and relevant for medical education.

This thesis describes how complex and real-world relevant analytical solutions can be found starting from a simple Nagumo problem posed on one or two-dimensional lattices.

Plants that grow in patterns of stripes on the edge of deserts, plankton that live on the sea bed or oscillate in the water, and melanomas that spread throughout the body. Mathematician Lotte Sewalt discovered the common elements in these three systems. PhD defence 8 September.

The sentencing decision of the judge might be the most important decision in the criminal proceedings, not only because of the impact the punishment has on the offender, but also because the sentencing decision is a cornerstone of the legitimacy of the entire criminal justice system.

Atopic dermatitis (AD) is a common inflammatory skin disorder characterised by various epidermal alterations. Filaggrin (FLG) mutations are a major predisposing factor for AD and much research has been focused on the FLG protein.

On January 5, Rosa Winter will obtain her doctorate in arithmetic geometry. She researched solutions of equations that define so-called ‘del Pezzo surfaces’. ‘I like geometry because I can imagine and draw the shapes and objects,’ says Winter. ‘That makes abstract mathematics feel more tangible.’

In Green Bank, Virginia are some giant radio telescopes which astronomers use to study objects deep in space. Because these telescopes are built to capture very faint redio signals, the area around the observatory is officially a 'radio-quiet' zone, without WiFi, radio or Cell signal. Photographers…

Reflective dialogue is an effective instrument for professional learning of teachers. This research considers the characteristics, development, stimulating and limiting conditions for reflective dialogues in the context of Dutch primary school teachers who collaborate and learn together. The goal is…

Why do certain incidents of serious violence end lethally whereas others do not? What role do personal characteristics of offenders and victims play and how do immediate situational factors influence outcomes?

The literature indicates that teacher professional development and learning may be improved by using formative assessment procedures. This thesis focuses on a specific form of formative assessment, negotiated assessment, which is characterised by the exchange of views between assessor and assessee and…

In this thesis we study bistable reaction-diffusion equations on lattice domains.

This thesis consists of three chapters. Each chapter is on a different subject. However, all three chapters address issues that arise in counting arithmetically interesting objects.

Epithelial-mesenchymal plasticity (EMP) and tumor cell migration play an important role in cancer progression, and an improved understanding of the mechanisms underlying these concepts is essential for developing new targeted approaches.

Despite the rain and awful weather, the painting job has been finished within a week. The Van der Waals-state equation is the eighth Leiden wall formula.

Promotor: Prof.dr. D. Bouwmeester

This dissertation studies the Asymptotics of Bayesian nonparametric inference for Gaussian linear models.

Promotor: Prof.dr. F. den Hollander

Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?

In this thesis, we study travelling waves in stochastic reaction-diffusion equations. We extend techniques from the deterministic theory for travelling waves to apply to the stochastic version, which allows us to compute the stochastic wave speed and shape, and draw conclusions on the stability of the…

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

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

van Luijk

Promotor: R. Gill, Co-promotor: P. Massart

Promotores: Arjen Doelman, Jens Rademacher, Max Rietkerk

Immunotherapies for cancer are an emerging class of therapeutic strategies which aim to treat cancer via augmentation of the immune system.

The winner of the highest scientific distinction in mathematics, an explanation for wine tears and much more mathematical theory and application. From 8 to 12 July, 550 mathematicians will meet in the center of Leiden to discuss differential equations.

In a recent study, Dr. Moji Aghajani and colleagues show that adolescents with a severe form of Conduct Disorder (CD) -with limited prosocial emotions- require an unusually large amount of brain capacity to read emotional faces. These effects were found in comparison to CD youth without limited prosocial…

The Equadiff conferences are a series of international meetings devoted to the field of differential equations in the broadest sense. Spread all over Europe, recent locations include Bratislava (2017), Lyon (2015), Prague (2013), Loughborough (2011), Brno (2009), Vienna (2007), Bratislava (2005),…

In the week of July 1st - 5th there will be a summer school on "Data science for dynamical systems" at the Lorentz Center in Leiden.

Truth is stranger than fiction. In 1997 Juan Maldaceña discovered a remarkable dictionary that translates equation for equation the physics of black holes in string theory into the more conventional physics of quantum mechanics of interacting particles. The remarkable possibility exists that…