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)

1st/2nd year Personal Tutees, my appointments page for January 2016 meetings is here (email me).

Research Interests

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


Algorithms and Data Structures 3rd-year course Spring 2016 (also open to 4th years).
Computer Programming: Skills and Concepts (CP): Autumn 2015


For academic year 2012/13 I am overall Course Organiser for the 4th year Honours programmes within Informatics. Year Guide here.

(past) PhD students

Páidí Creed, Counting and Sampling problems on Eulerian graphs (2010). Now at Royal Holloway, University of London.
James Matthews, Markov chains for sampling matchings (2008). Now at Barco, 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