Artin L-functions associated to continuous representations of the absolute Galois group G_K of a global field K capture a lot of information about G_K as well as arithmetic properties of K.

How do first-hand narratives of war of commanders in the front line relate to the official narrative of the Eighty Years’ War?

It is crucial that Leiden University reflects on its colonial history. These were the words of Cleveringa Professor Gert Oostindie in his inaugural lecture on 24 November. ‘As a university community, we must dare to hold up a mirror to ourselves and, where possible and necessary, also take concrete…

With the growth of cybercrime in recent years, there is an urgency to gain insight into the money laundering process and the actors involved. This study focusses on the money laundering process and maps the actors involved in banking malware and ransomware.

Promotor: H.W. Lenstra, Jr., Co-promotor: B. de Smit

This research project explores themes related to the system of close protection and surveillance (Dutch: bewaken en beveiligen) in the Netherlands.

This project explores themes at the intersection of maritime history and environmental history by looking at the problems Dutch ships encountered in the different climates of the Atlantic and Indian Ocean worlds, and the solutions they could provide.

Blood, Sweat and Tears: The Changing Concepts of Physiology from Antiquity into Early Modern Europe

This volume challenges the idea that the development of ‘democracy’ is a story of rise and progress at all. It is rather a story of continuous but never completely satisfying attempts of interpreting the rule of the people.

This study employs a comparative perspective to identify generic and specific qualities of petitions and petitioning. It charts the chronological development of petitioning practices over centuries. The interdisciplinary approaches provide range of conceptual and methodological expertise for reade…

This study interrogates contemporary and historical uses of barbarism, arguing that barbarism also has a disruptive, insurgent potential.

In this article, Ben de Jong, research fellow at the Institute of Security and Global Affairs, examines the relationship between double agents and their handlers.

International Coalitions for Peace in the Era of Decolonization, 1918-1970

Asim Zubcevic defended his thesis on 11 November 2015

This project proceeds from the observation that since the second half of the twentieth century, forgiveness and reconciliation have become pervasive themes in western culture, both on a political level and in personal relations.

This research investigates the impact of socioeconomic developments on the physical condition of medieval populations in Holland and Zeeland between AD 1000 and 1600 through the analysis of human skeletal remains from three archaeological sites.

In this doctoral dissertation (2012) the effects of the monetization of the Greek world in the 5th and 4th century on conceptions of reciprocity in friendship are analyzed.

The historical archaeology of the Port of Sandy Point and its anchorage, St. Kitts, West Indies

During the early modern period, many medieval manuscripts were cut up into strips of parchment which were reused to reinforce the bindings of newly printed books. Until recently, these reused pieces of medieval manuscripts only came to light when the early modern book binding was damaged and/or subjected…

The Team International Relations and European Studies addresses the interconnections and interdependence of contemporary global political, economic, security and culture from a multidisciplinary perspective rooted in the humanities. More specifically it is concerned with the study of international relations…

The soya sauce in our kitchen cabinets is not a recent acquisition. This sauce is an important element in a long history of exchange between Asia and Europe. This is what Anne Gerritsen claims in her inaugural lecture for the Kikkoman Chair on Friday 12 December.

Thirty years ago, the Leiden Journal of International Law (LJIL) was born, at a time when the writing of histories was hardly a popular endeavor for international legal scholars. In his 1987 article ‘Probleme der Völkerrechtsgeschichte’ (‘The Problems of International Legal History’), Heinhard Steiger…

Understanding the evolving landscape of extremism in the 21st century.

On February 10 2025, the Leiden Jewish Studies Network convened a lively roundtable and catered reception at the Faculty Club to celebrate the launch of Dr. Kate Brackney’s new book, Surreal Geographies: A New History of Holocaust Consciousness (University of Wisconsin Press, 2024), winner of the George…

The University of Groningen is looking for an assistant professor in Medieval history for 1,0 FTE. Deadline for applications, 23 March 2025.

Call for Papers: Yearbook for Dutch Book History 33 (2026). Deadline 1 April 2025.

Exchanges between different cultures and institutions of learning have taken place for centuries, but it was only in the twentieth century that such efforts evolved into formal programs that received focused attention from nation-states, empires and international organizations.

On the 2nd of September Jiyan Qiao successfully defended a doctoral thesis and graduated.

Arab Identity and the Rise of Islam

The Yearbook for Dutch Book History publishes Open Access articles in the Dutch and English language on all aspects of the book history of the Low Countries. For the 32nd edition of 2025, they particularly welcome contributions within the theme of “Books across borders.”

The Dutch Research School Art History (OSK) and Utrecht University organize the Technical Art History Days. On April 4 and 5, experts present and discuss current research at Utrecht University that brings together material and digital approaches for the study of art and heritage.

How was the future United Nations Organization promoted to global publics during WW II?

The contributions in this volume seek to highlight the atypical features of the Hanse, and place them in a wider context of common roots, influences and parallel developments.

This volume discusses practices of memory in early modern Europe.

The Yearbook for Dutch Book History publishes Dutch and English articles on the book history of the Low Countries, in all time periods (including the Middle Ages). For the 30th Yearbook, to be published in 2023, they welcome in particular contributions for the theme ‘Technology and Transformation’.…

The Department of History at Amherst College invites applications for a full-time, tenure-track position at the rank of assistant professor in medieval and early modern European history, beginning July 1, 2024. The area of specialization is open, but we particularly seek candidates who will offer a…

On 23 January 2020, Paula Kemp defended her thesis 'Enforced performance of commercial sales contracts in the Netherlands, Singapore and China'. The doctoral research was supervised by Prof. H.B. Krans and Prof. M.H. Wissink (RU Groningen).

In November, Springer published a book on The Future of Drone Use, edited by dr. Bart Custers, associate professor at eLaw, the Center for Law and Digital Technologies of Leiden University.

Contact details and staff overview of the Leiden University Graduate School of Social and Behavioural Sciences.

Acquiring and maintaining public support is frequently cited as an important requirement for governments fighting non-state actors. But how exactly can public support influence the course of counterterrorism campaigns and thereby contribute to an escalation or de-escalation of violence?

This book explores the lasting legacy of the controversial project by the Congress for Cultural Freedom, funded by the CIA, to promote Western culture and liberal values in the battle of ideas with global Communism during the Cold War.

The historiography of the Bretton Woods conference of July 1944 is dominated by the personal clash between the principal negotiators, Harry Dexter White of the United States and John Maynard Keynes of Britain.

The rise and fall of the cesspit in an urban context

This NWO-funded research programme focuses on the assumptions and methodology of the writing of history of science. History of science is in many respects a flourishing discipline: it currently yields an impressive volume of studies. Systematic reflection about the ways in which history of science may…

The treasure houses of Leiden's University Library and Naturalis house wonderful historical collections with dried plants and botanical drawings. Tinde van Andel, extraordinary professor of History of botany and gardens, studies these collections.