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Robert Heffernan Profile
Personal Details
 Position: Lecturer.
 Research: My research interests are (mostly) in group theory.
Contact Details
 Departmental address: Department of Mathematics, Cork Institute of Technology, Bishopstown, Cork, Ireland.
 Office: C224
 Phone: 021 433 6186
 Email: robert dot heffernan at cit dot ie
Research
My research interests are primarily in the area of group theory. Initially, my work was in finite group theory (commuting probability, pgroups and their automorphisms, some character theory) but, more recently, I have developed an interest in geometric group theory.
Publications

R. Heffernan, B. McCann: Minimal embeddings of finite cyclic groups (In preparation)

R. Heffernan, D. MacHale: Values of f(G) for groups G of odd order with Pr(G) >= 11/75 (accepted for publication in Bulletin of the Irish Mathematical Society)

R. Heffernan, D. MacHale: On the order of a smallest group with a given representation degree in Bulletin of the Irish Mathematical Society, 84, 2124 (2020)
 R. Heffernan, B. McCann: Minimal embeddings of small finite groups (pending publication in IJGT, October 2019).
 R. Heffernan, D. MacHale, B. McCann: Cayley's theorem revisited: Embeddings of small finite groups in Mathematics Magazine, 91 (2), 103111 (2018).
 R. Heffernan, D. MacHale, A. Ni She: Central factor groups and commutativity in Mathematical Proceedings of the Royal Irish Academy, Vol. 117A (2), 6375 (2017).
 R. Heffernan, D. MacHale, A. Ni She: Restrictions on commutativity ratios in finite groups in the International Journal of Group Theory, 3 (4), 112 (2014).
 J. Curran, R. Heffernan and D. MacHale: On the Order of the Automorphism Group of a Finite Group in Communications in Algebra, 39 (10), 36163624, (2011).
 E. C. Freuder, R. Heffernan, R. J. Wallace and N. Wilson: Lexicographicallyordered Constraint Satisfaction Problems in Constraints, 15 (1), 13837133 (2010).
 R. Heffernan and D. MacHale: On the sum of the character degrees of a finite group in Mathematical Proceedings of the Royal Irish Academy, 108A (1), 5763 (2008).
 E. C. Freuder, R. Heffernan and R. J. Wallace: Ordinal constraint satisfaction in The Proceedings of 5th International Workshop on Soft Constraints, 2003.