Dr Colin Ramsay
Honorary Research Fellow
School of Electrical Engineering and Computer Science
Book Chapter
Donovan, D. M., Mahmoodian, E., Ramsay, C. and Street, A. P. (2003). Defining sets in combinatorics: a survey. Surveys in Combinatorics 2003. (pp. 115-174) edited by C.D. Wensley. UK: Cambridge University Press.
Journal Articles
Ramsay, Colin (2021). Writing commutators of commutators as products of cubes. Communications in Algebra, 50 (2), 809-811. doi: 10.1080/00927872.2021.1970759
Conder, Marston, Havas, George, Newman, M. F. and Ramsay, Colin (2020). On presentations for unitary groups. Journal of Algebra, 545, 100-110. doi: 10.1016/j.jalgebra.2019.02.043
Campbell, C. M., Havas, G., Ramsay, C. and Robertson, E. F. (2014). All simple groups with order from 1 million to 5 million are efficient. International Journal of Group Theory, 3 (1), 17-30.
Havas, George, Lawrence, Julie L., Ramsay, Colin, Street, Anne Penfold and Yazici, Emine Sule (2008). Defining Set Spectra for Designs can have Arbitrarily Large Gaps. Utilitas Mathematica, 75, 67-81.
Campbell, Colin M., Havas, George, Ramsay, Colin and Robertson, Edmund F. (2007). On the efficiency of the simple groups of order less than a million and their covers. Experimental Mathematics, 16 (3), 347-358. doi: 10.1080/10586458.2007.10129006
Gray, Ken, Street, Anne Penfold, Harris, Karen and Ramsay, Colin (2005). Existence of complementary pairs of proportionally balanced designs. Utilitas Mathematica, 67, 43-64.
Campbell, C.M., Havas, G., Ramsay, C. and Robertson, E.F. (2004). Nice efficient presentation for all small simple groups and their covers. LMS Journal of Computation and Mathematics, 7, 266-283. doi: 10.1112/s1461157000001121
Havas, G. and Ramsay, C. (2003). Breadth-first search and the Andrews-Curtis conjecture. International Journal of Algebra And Computation, 13 (1), 61-68. doi: 10.1142/S0218196703001365
Ramsay, C. (2003). The IQ-block: An interesting polyomino puzzle. Journal of Recreational Mathematics, 31 (4), 261-266.
Adams, P., Khodkar, A. and Ramsay, C. (2001). Smallest defining sets of some STS. Journal of Combinatorial Mathematics and Combinatorial Computing, 38, 225-230.
Havas, George and Ramsay, Colin (2000). Proving a group trivial made easy: A case study in COSET enumeration. Bulletin of the Australian Mathematical Society, 62 (2000), 105-118. doi: 10.1017/S0004972700018529
Gray, B. and Ramsay, C. (2000). On the spectrum of Steiner (v, k, t) trades (I). Journal of Combinatorial Mathematics and Combinatorial Computing, 34, 133-158.
Gray, Brenton D. and Ramsay, Colin (1999). On the spectrum of Steiner (v,k,t) trades (II). Graphs and Combinatorics, 15 (4), 405-415. doi: 10.1007/s003730050074
Ramsay, C. (1999). On the index of simple trades. Australasian Journal of Combinatorics, 20, 207-221.
Gray, Brenton D. and Ramsay, Colin (1999). Some results on defining sets of t-designs. Bulletin of the Australian Mathematical Society, 59 (2), 203-215. doi: 10.1017/S0004972700032822
Ramsay, Colin and Rogers, Douglas G. (1997). The problem of irregular perfect systems of sets of iterated differences. Graphs and Combinatorics, 13 (1), 85-94. doi: 10.1007/BF01202240
Conference Papers
Lindsay, Peter, Ramsay, Colin, Vilaplana, Miguel, Leones, Javier Lopez, Casado, Enrique and Parks, Paul (2009). Robustness of idle-throttle continuous descent approach trajectories against modified timing requirements. 9th AIAA Aviation technology, Integration and Operations Conference (ATIO '09), South Carolina, USA, 21-23 September 2009. USA: American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/6.2009-6910
Havas, George and Ramsay, Colin (2007). On proofs in finitely presented groups. Groups St Andrews 2005, St Andrews, Scotland, 30 July - 6 August, 2005. Cambridge, UK: Cambridge University Press.
Conder, Marston, Havas, George and Ramsay, Colin (2006). Efficient presentations for the Mathieu simple group M22 and its cover. Finite Geometries, Groups, and Computation, Pingree Park, CO, United States, 4-9 September 2004. New York. NY, United States: Walter de Gruyter.
Havas, G. and Ramsay, C. (2003). Short balanced presentations of perfect groups. Groups St Andrews 2001 in Oxford, Oxford, 5-18 August, 2001. Cambridge: Cambridge University Press.
Havas, G. and Ramsay, C. (2003). Andrews-Curtis and Todd-Coxeter proof words. Groups St Andrews 2001 in Oxford, Oxford, 5-18 August, 2001. Cambridge: Cambridge University Press.
Havas, G. and Ramsay, C. (2001). Experiments in coset enumeration. Groups and Computation, Columbus, Ohio, 15-19 June, 1999. Berlin: Walter de Gruyter & Co..
Havas, G. and Ramsay, C. (2000). Parallel COSET enumeration using threads. ASCM 2000, Thailand, 17-21 December 2000. Singapore: World Scientific. doi: 10.1142/9789812791962_0004
Thesis
Ramsay, Colin (1998). Trades and defining sets : theoretical and computational results. PhD Thesis, Information Technology and Electrical Engineering, The University of Queensland. doi: 10.14264/157892