This dissertation explores matters of collectivity, drawing from the experience of working with the Amsterdam-based collective Hackers & Designers (H&D).

Which fungi live in Leiden University’s historic buildings and collections, and how can their impact on heritage and human health be understood and managed?

ERC Starting Grant: The Van Manen Project. This five year project (2023-2028) is made possible with an ERC Starting Grant. It aims to (digitally) reunite all parts of the Van Manen Collection. This enables us to study it as a whole, helping us to understand the process of collection formation. More…

Anja Groten investigates matters of collectivity, drawing from the experience of working with the Amsterdam-based collective Hackers & Designers (H&D)*.

On 21 November 2018, Lieke Kools defended her thesis 'Essays on wealth, health, and data collection'. The doctoral research was supervised by Prof. dr. K.P. Goudswaard en Prof. dr. C.L.J. Caminada.

This project aims to improve understanding of, and responses to, the phenomenon of lone actors through analysis of comprehensive data on cases from across Europe.

We complete this thematic issue’s contribution on skill, food, and sustainability with a team report based on ethnographic research which focuses on reskilling for sustainability in multiple European locations and involving diverse social actors and stakeholders. The Food Citizens? project (2017-2024)…

On 23 juni 2019, Zygimantas Juska defended his thesis 'The Role of Collective Redress Actions to Achieve Full Compensation for Violations of European Union Competition Law'. The doctoral research was supervised by Prof. dr. T.R Ottervanger.

In this article, Sophie Vériter examines the EU’s unprecedented ban on Russian state media following the invasion of Ukraine, using securitisation theory

Chinese materia medica (CMM), comprising a diverse array of natural substances from plants, animals, and minerals, has been integral to Traditional Chinese Medicine (TCM) throughout history. This study investigates the dynamic evolution of CMM, noting shifts in species for improved therapeutic effects…

Grasseni's contribution to this special feature on food cultures, food systems, and agriculture in Europe builds upon her ongoing project Food citizens? Collective food procurement in European cities: solidarity and diversity, skills and scale.

The overarching goal of this thesis is to set the foundations, but also make the first essential steps towards establishing a comprehensive, mesoscopic, hydrodynamic theory of epithelial tissues. The stage is set by an exhaustive study of topological defects in passive p-atic liquid crystals, singularities…

This book reveals how one publishing firm's editorial strategy helped to legitimate European colonialism in the early modern era.

On Thursday 11 January 2018, Xiang Li will defend her doctoral thesis: “Collective Labour Rights and Collective Labour Relations of China”. The defence will take place at 11:15 hrs at the Academy Building of Leiden University, Rapenburg 73. The supervisors are Professor Guus Heerma van Voss and Professor…

Who assembled the collections of museums? The answer to this question seems to point to men as collectors. Apart from for rare exceptions, female collectors hardly seem to exist. Yet there were indeed women collectors. For the project Museums, Collections and Society, researcher Holly O'Farrell will…

What is the iconography of propaganda specifically as it relates to the historical development of political ideologies in modern Egypt and how was/is this propaganda disseminated among creative fields such as cinema, art, monuments, architecture, and literature?

The Museums, Collections and Society programme, a joint initiative of the Faculties of Humanities and Archaeology, examines the dynamics and implications of the art of collecting as a universal phenomenon. The activities in the programme, which will be accommodated under LUCAS, will focus on three…

The Collective Experience of Empathic Data Systems (CEEDs) consortium developed novel integrated technologies that support experiencing, analysing and understanding of very large datasets.

Combining cutting-edge quantitative approaches with more traditional book history approaches, this new book offers the first history of medieval manuscript destruction in England from the medieval period to the present.

Vacancies at the Department of Economics

This thesis has three main parts. The first part gives an algorithm to compute Hilbert modular polynomials for ordinary abelian varieties with maximal real multiplication. Hilbert modular polynomials of a given level b give a way of finding all of the abelian varieties that are b-isogeneous to any given…

Holtz defended her dissertation ‘Collective human rights as an (onto)logical solution to climate change: reconceptualizing, applying and proceduralizing an overlooked category of human rights’ on 16 October 2025. The doctoral research was supervised by Carsten Stahn and Daniëlla Dam-de Jong.

The Executive Board has appointed Pieter ter Keurs as professor of Museums, Collections, and Society as of 1 September 2019. The chair will be part of LUCAS (Faculty of Humanities) and is a collaborative effort of the Faculty of Archaeology and the Faculty of Humanities. Ter Keurs has his roots in…

In films kunnen de meest wonderlijke acties plaatsvinden. Maar zijn die acties in de 'echte' wereld ook mogelijk? En in hoeverre houden filmmakers ons voor de gek? Tijdens het Leiden International Film Festival komen film en wetenschap samen.

The collection guides of archives and collections of Leiden University Libraries (UBL) have been made available via the portal Collection Guides. This has greatly improved the findability, visibility and ease of use of these collection finding aids.

All published texts from the Collection of the Leiden Papyrological Institute have now been made available online, including images, translations and metadata. See Advanced Papyrological Information System (APIS).

Promotor: Prof.dr. P. Stevenhagen, Co-Promotor: Dr. J.H. Evertse

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The medieval manuscripts collection of the Athenaeumbibliotheek Deventer, which consists of around 130 manuscripts and 20 fragments, has now completely been digitized.

Maartje van den Heuvel, researcher and curator of photography at Leiden University, will be giving a tutorial next semester to master students of Film & Photographic Studies. A great opportunity for them to work with an exceptional collection from the Leiden University Library. Van den Heuvel explains…

This interdisciplinary project applies data science techniques to qualitatively and quantitatively visualize the interaction between the University and the city of Leiden (Town&Gown) from 1575 onwards. One of the possible angles for follow-up research is diversity, especially from the international…

Why and how do people collect things? Why does a museum display one object and not another? These questions are at the heart of the interdisciplinary research programme Museums, Collections and Society. The programme is holding a conference for scholars and the general public on 5 and 6 July.

Professor Pieter ter Keurs has spent his entire career studying collecting. Now, he is retiring. ‘I hope the focus on collections will carry on.’

Dieselgate, privacy violations by TikTok, increases in energy prices: reports of mass damage lawsuits are a regular occurrence. These lawsuits raise many interesting legal questions. A new handbook sheds light on these issues.

What are the new challenges for collective organisations in the logistic sector? On 25 November 2021, Raquel Alquézar Crusellas has visited the ERC group to exchange insights about her new research about collective organisations among delivery riders in Europe.

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This case study-based textbook in multivariate analysis for advanced students in the humanities emphasizes descriptive, exploratory analyses of various types of data sets from a wide range of sub-disciplines, promoting the use of multivariate analysis and illustrating its wide applicability. Fields…

In Democratie en totalitarisme zijn de invloedrijkste opstellen van de Franse denker Claude Lefort samengebracht. Lefort laat overtuigend zien dat de kwetsbaarheid van de democratie juist ook haar kracht is. Voor democratie is essentieel dat de macht als ‘lege plaats’ verschijnt. Zij mag slechts tijdelijk…

Dit proefschrift beschrijft een collectie aan alternatieve strategieën voor het begrijpen, ontwerpen en toepassen van lipide nanosystemen, waarin de rol van de bio-nano interacties centraal staan. In het bijzonder wordt gekeken naar de interactie van RNA-lipide nanosystemen, bekend van de toepassing…

What effect do trends in the art world have on the formation of museum collections? University lecturer Martin Berger wants to answer that question in his research within the Museums, Collections and Society project, which asks ethical questions about the origin of collections.

Valentina Carraro presented her paper at the workshop ‘Collective agency of international institutions’, University of Bamberg, 6-7 October 2022.

On Thursday 26 June 2025, the Pavilion of the Wereldmuseum Leiden featured the first joint meeting of Leiden University and the Vrije Universiteit Amsterdam around the shared research theme Collecting Global Heritage. Some 50 researchers, students and collection managers came together to share knowledge,…

Castles, monasteries and bridges, but also city profiles, history prints and water management works. Leiden University Libraries (UBL) manages one of the most important collections of topographical images in the Netherlands. The collection, bequested to UBL by Johannes Tiberius Bodel Nijenhuis (1797-1872)…

Employer organizations have been presented as strong promoters of the liberalization of industrial relations in Europe. This article, in contrast, argues that the preferences of employers vis-à-vis liberalization are heterogeneous and documents how employer organizations in Spain, Italy, and Portugal…