Imitation is, perhaps more than ever, constitutive of human originality.

My PhD research is devoted to studies of the conjectural cluster-algebraic symmetry in the theory of topological string, which is the simplest, however already non-trivial sector in the theory of string.

Promotor: K.E. Schalm, Co-promotor: S.S. Lee

The Summer School on International Humanitarian Law is designed by the Grotius Centre Kalshoven-Gieskes Forum on International Humanitarian Law. The announcement for the next edition is set for December 2025, with registration beginning in January 2026.

This six-weeks online course delves into the research behind terrorism as it unpacks the assumptions and impacts of both terrorism and counterterrorism.

Western thought has often dismissed shadows as fictional, but what if fictions reveal original truths?

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

Promotor: J. Zaanen

On the 28th of September Go Hirasawa successfully defended a doctoral thesis and graduated.

This study looks at the question of how and at what level students in primary teacher education can integrate theory and practice, and how the organisation of their learning environment, focusing especially on mathematics and pedagogy, can contribute to that.

The focus of our theoretical research is understanding the behaviour of soft condensed matter, physical matter which is deformed or structurally altered by thermal fluctuations or small stresses.

Explore the programme of the MSc Political Theory: Legitimacy and Justice at Leiden University — focusing on core political philosophy themes, in-depth theory, methods, elective seminars, and a thesis or internship track.

Barbarism: from the 18th century to the present.

Explore the structure of the MSc Political Theory: Legitimacy and Justice at Leiden University, including core courses, electives, method training, thesis or internship, and small‑group seminars.

This collection brings into conversation several kinds of scholarship on medieval authorship which have tended to remain separate over the last two to three decades, a period of steadily increasing scholarly interest in this topic.

The second and final volume of this co-authored study has just been published by J.B. Metzler. This second monograph explores the history of the concept of barbarism in the twentieth and twenty-first centuries.

Organized by the Grotius Centre for International Legal Studies, this programme enables students and professionals from all over the world to engage in discussions on the prospects and challenges of international criminal justice.

Humans can see the world through the eyes of other humans and imagine what they know, want, and intend. This competence is known as Theory of Mind.

The terms ‘social’ , ‘collective’ or ‘public’ memory, are often contrasted with ‘private’, ‘individual’ or ‘personal’ memory. All these terms derive from a fairly new and interdisciplinary scholarly field that is often referred to as ‘memory studies’, and that according to some critics has developed…

In this work we describe three methods to improve the performance of Quantum Field Theory calculations.

Following their application to system biological models, control theory techniques have further potential to aid in the understanding and application of quantitative systems pharmacology models.

On 16 april 2020, Andrew Fink defended his thesis 'The Importance of Conspiracy Theory in Extremist Ideology and Propaganda'. The doctoral research was supervised by Prof. A. Ellian.

The next generation of high-contrast imaging instruments on space-based observatories requires sophisticated wavefront sensing and control in addition to a high-performance coronagraph.

Is there a causal mechanism underlying the decision to attack another country when on the brink of war? If so, does this mechanism differ between regime-types? Political scientist Femke Bakker (Leiden University) addresses this question from a political psychological and comparative perspective and…

Check the admission requirements for the MSc Political Theory: Legitimacy and Justice at Leiden University — bachelor degree in (or related to) Political Science with sufficient relevant credits and, if needed, research‑methodology background.

How can we gain insights in the connection between teaching practices and theoretical elaborations of purposes of education?

While self-driving cars and autonomous weapon systems have received a great deal of attention in media and research, the general requirements of ethical life in today’s digitalizing reality have not been made sufficiently visible and evaluable.

The silenced paradoxes of urban renewal.

The relevance of intentionality to the interpretation of Aristotle was first suggested by Brentano in his Psychology from an Empirical Standpoint. Here we take our starting point from Brentano and investigate how Brentano’s concept of intentionality is rooted in Aristotle.

Discover why Leiden University is the ideal place for the Political Theory: Legitimacy and Justice MSc — combining top-level political philosophy education, small-group seminars, and academic staff expertise.

Explore the extra challenge options for the MSc Political Theory: Legitimacy and Justice at Leiden University — including Honour’s Academy programmes, leadership training, and opportunities to deepen your research experience.

Promotor: Ronald Cramer, Co-promotor: Serge Fehr

The Seeger Center for Hellenic Studies at Princeton University annually offers a limited number of Visiting Research Fellowships for scholars in the humanities or the social sciences worldwide, who wish to spend time in residence at Princeton pursuing independent research projects, free of teaching…

Promotor: V. Vitelli, Co-promotor: J. Paulose

In 1933, Maria Ulfah Santoso was the first Indonesian women to earn a law degree. During her studies in Leiden University she became involved with Indonesia;s nationalist movement. She went on to be Indonesia's Social Minister, as the first female cabinet member. In this article, historian Wildan Sena…

Explore the career possibilities after the MSc Political Theory: Legitimacy and Justice — pursue roles in academia, policy analysis, public debate, ethics consultancy, or further studies (PhD).

Check the application deadlines for the MSc Political Theory: Legitimacy and Justice at Leiden University — visa / residence permit and non‑visa deadlines for September and February intakes.

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

On 12 mei 2020, Darryl Robinson defended 'Exploring Justice in Extreme Cases: Criminal Law Theory and International Criminal Law'. The doctoral research was supervised by Prof. C. Stahn.

Maria Vasile and Ola Gracjasz met in Donostia-San Sebastian, in the Basque Country, on the 7th of June 2022 to take part in the 1st Feminist Anthropology Conference in the Spanish state (I Antropologia Feminista Kongresua), and together present some of the outcomes of their Ph.D. researches. The conference,…

The linguistic project constitutes the connection between the two other subprojects. It consists of two parts.