I am College Associate Lecturer and Director of Studies in Mathematics at St John's College, University of Cambridge, affiliated with the Department of Pure Mathematics and Mathematical Statistics at the University of Cambridge.

Before that I was a Senior Research Associate in the Mathematics Department at Lancaster University, a Postdoctoral Fellow at the Max Planck Institute for Mathematics in Bonn and a College Lecturer and Fellow of Christ's College.


Dr Julian VS Holstein
St John's College
Cambridge, CB2 3BUF
United Kingdom

Email: jvsh2,


My research interests lie at the intersection of algebraic geometry and algebraic topology with higher category theory and homotopical algebra Here is a list of my papers and preprints in reverese chronological order:

The paper title links to the arxiv, the journal title links to the published versions; there are no differences in content.

The last three papers are based on my PhD thesis Morita Cohomology. My advisor was Ian Grojnowski.


In Lent Term 2015 I was lecturing a Part III course, Homological and Homotopical Algebra.

I am running pure maths examples classes for first year students, and some information on these classes and undergraduate maths in general can be found here.

Other courses I taught include Algebraic Geometry, Algebraic Toplogy and Representation Theory in Part II, Analysis II, Geometry, Groups, Rings & Modules, Linear Algebra and Metric & Topological Spaces in Part IB and Analysis I, and Numbers & Sets in Part IA.

I have also been a group leader at the Part III Seminar Series, talked at the Adams Society and in the Archimedeans' SU(2) series (where SU(2) stands for "seminars for undergraduates, too"). In 2009 I gave a course at the Deutsche Schülerakademie.

Young Researchers in Maths

From 16 to 18 April 2009 a novel event happened in Cambridge. For two days 200 young researchers from all areas of mathematics took over the CMS. Young Researchers in Maths became a yearly event, with conferences 2010 in Cambridge, 2011 in Warwick, 2012 in Bristol, 2013 in Edinburgh, 2014 in Warwick, 2015 in Oxford, 2016 in St Andrews and 2017 in Kent.

The aim of Young Researchers in Maths is to improve contacts between PhD students and other early career mathematicians. If you are interested in running one of these events in the future or have other ideas how to get young mathematicians together, please get involved by getting in contact with the current comittee!


In my nonmathematical life I like improvised theatre, that is, theatre without a script, without a director, without any idea what is going to happen on stage in the next minute.
I was a member of the Cambridge Impronauts, formerly known as ICE, and I have taught some wokshops at summer schools, including a full one week course at the CdE Sommerakademie.

My mother is Susannne Holstein, she is an artist.