Mary Cryan

Lab for Foundations of Computer Science
School of Informatics
Informatics Forum
University of Edinburgh
Edinburgh EH8 9AB
Scotland, UK

Office: 5.18, Informatics Forum (new office one door away)

mcryan AT inf DOT ed DOT ac DOT uk

+44-131-650-5153 (phone)
+44-131-651-1426 (fax)

Personal Tutees, please click here to see my personal tutee schedule for September 2016 and then email me to book an appointment, giving at least two options.

Research Interests

Algorithms, especially Algorithms for counting and sampling; Random Structures; Learning theory; Pseudorandom generators.

Research papers here.


I will be teaching "Randomness and Computation" in Spring 2017.


For academic year 2016/17 I am overall Course Organiser for the 4th year Honours programmes within Informatics. I am also Deputy Director and PhD Selector for the Lab for the Foundations of Computer Science.

(past) PhD students

Páidí Creed, Counting and Sampling problems on Eulerian graphs (2010). Now working on "Deep Learning" as an Industry Scientist in London.
James Matthews (co-supervisor), Markov chains for sampling matchings (2008). Now working in Industry in Edinburgh.


I am originally from Dublin, and I did my undergraduate degree at University College Dublin, graduating with a BSc in Computer Science and Mathematics in 1993. I returned to UCD for the 1994-1995 academic year to do an MSc by research in Computer Science, supervised by Allan Ramsay. After that I spent four years at the University of Warwick doing research for my PhD. At Warwick I was a member of the Algorithms and Computational Complexity Group, working with Leslie Ann Goldberg.

Between September 1999 and August 2001 I was a postdoc at the Center for Basic Research in Computer Science (BRICS) at the University of Aarhus in Denmark. Between September 2001 and May 2003 I was a postdoc with the Algorithms and Complexity Group of the University of Leeds, working on randomized algorithms with Martin Dyer. Since July 2003 I have been a lecturer in Informatics at Edinburgh.

email: mcryan AT inf DOT ed DOT ac DOT uk