Edit Profile (opens in new tab) Ramsay, Colin M. Co-Author Distance Author ID: ramsay.colin-m Published as: Ramsay, Colin; Ramsay, Colin M.; Ramsay, C. more...less Documents Indexed: 59 Publications since 1984, including 2 Additional arXiv Preprints Co-Authors: 23 Co-Authors with 35 Joint Publications 626 Co-Co-Authors all top 5 Co-Authors 24 single-authored 13 Havas, George 7 Oguledo, Victor I. 6 Gray, Brenton D. 3 Campbell, Colin Matthew 3 Roberts, Ian T. 3 Robertson, Edmund Frederick 3 Street, Anne Penfold 2 Conder, Marston Donald Edward 2 Rogers, Douglas G. 1 Adams, Peter J. 1 Arcila, Luis David 1 Donovan, Diane M. 1 Goda, Gopi Shah 1 Gray, Ken 1 Hamilton, G. M. 1 Harris, Karen G. 1 Khodkar, Abdollah 1 Krutto, Annika 1 Lawrence, Julie L. 1 Mahmoodian, Ebadollah S. 1 Newman, Michael Frederick 1 Pathak, Priya 1 Ruskey, Frank all top 5 Serials 10 Insurance Mathematics & Economics 7 North American Actuarial Journal 3 Bulletin of the Australian Mathematical Society 3 Utilitas Mathematica 3 JCMCC. The Journal of Combinatorial Mathematics and Combinatorial Computing 2 Discrete Mathematics 2 Scandinavian Actuarial Journal 2 Graphs and Combinatorics 2 Communications in Statistics. Theory and Methods 2 The Australasian Journal of Combinatorics 2 Bulletin of the Institute of Combinatorics and its Applications 1 Communications in Algebra 1 Ars Combinatoria 1 Journal of Algebra 1 Journal of Statistical Planning and Inference 1 Sankhyā. Series A. Methods and Techniques 1 Queueing Systems 1 International Journal of Algebra and Computation 1 Experimental Mathematics 1 LMS Journal of Computation and Mathematics 1 Scandinavian Actuarial Journal 1 International Journal of Group Theory all top 5 Fields 19 Combinatorics (05-XX) 13 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 12 Group theory and generalizations (20-XX) 12 Statistics (62-XX) 10 Probability theory and stochastic processes (60-XX) 8 Computer science (68-XX) 2 Integral transforms, operational calculus (44-XX) 1 Special functions (33-XX) 1 Difference and functional equations (39-XX) 1 Functional analysis (46-XX) 1 Geometry (51-XX) 1 Manifolds and cell complexes (57-XX) 1 Numerical analysis (65-XX) 1 Operations research, mathematical programming (90-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 46 Publications have been cited 189 times in 129 Documents Cited by ▼ Year ▼ A solution to the ruin problem for Pareto distributions. Zbl 1055.91056 Ramsay, Colin M. 21 2003 Defining sets in combinatorics: A survey. Zbl 1031.05020 Donovan, Diane; Mahmoodian, E. S.; Ramsay, Colin; Street, Anne Penfold 16 2003 The distribution of sums of certain i.i.d. Pareto variates. Zbl 1084.62013 Ramsay, Colin M. 15 2006 Breadth-first search and the Andrews-Curtis conjecture. Zbl 1059.20029 Havas, George; Ramsay, Colin 9 2003 Exact waiting time and queue size distributions for equilibrium \(M/G/1\) queues with Pareto service. Zbl 1172.90365 Ramsay, Colin M. 8 2007 Minimal completely separating systems of sets. Zbl 0847.05096 Ramsay, Colin; Roberts, Ian T. 8 1996 Insurance pricing with complete information, state-dependent utility, and production costs. Zbl 1237.91138 Ramsay, Colin M.; Oguledo, Victor I. 8 2012 Nice efficient presentations for all small simple groups and their covers. Zbl 1053.20013 Campbell, Colin M.; Havas, George; Ramsay, Colin; Robertson, Edmund F. 8 2004 On the spectrum of Steiner \((v, k, t)\) trades. II. Zbl 0939.05015 Gray, Brenton D.; Ramsay, Colin 7 1999 On the spectrum of Steiner \((v, k, t)\) trades. I. Zbl 0959.05014 Gray, Brenton D.; Ramsay, Colin 7 2000 The asymptotic ruin problem when the healthy and sick periods form an alternating renewal process. Zbl 0543.62092 Ramsay, Colin M. 6 1984 The distribution of compound sums of Pareto distributed losses. Zbl 1224.91083 Ramsay, Colin M. 6 2009 Proving a group trivial made easy: a case study in coset enumeration. Zbl 0985.20019 Havas, George; Ramsay, Colin 5 2000 The distribution of sums of i.i.d. Pareto random variables with arbitrary shape parameter. Zbl 1165.62010 Ramsay, Colin M. 5 2008 On the efficiency of the simple groups of order less than a million and their covers. Zbl 1133.20015 Campbell, Colin M.; Havas, George; Ramsay, Colin; Robertson, Edmund F. 4 2007 Completely separating systems of \(k\)-sets. Zbl 0892.05048 Ramsay, Colin; Roberts, Ian T.; Ruskey, Frank 4 1998 Defining set spectra for designs can have arbitrarily large gaps. Zbl 1159.05007 Havas, George; Lawrence, Julie L.; Ramsay, Colin; Street, Anne Penfold; Yazıcı, Emine Şule 4 2008 Determining the optimum guarantee period for a one-life retirement annuity. Zbl 1480.91209 Goda, Gopi Shah; Ramsay, Colin M. 4 2007 Pricing high-risk and low-risk insurance contracts with incomplete information and production costs. Zbl 1284.91266 Ramsay, Colin M.; Oguledo, Victor I.; Pathak, Priya 4 2013 All simple groups with order from 1 million to 5 million are efficient. Zbl 1337.20007 Campbell, C. M.; Havas, G.; Ramsay, C.; Robertson, E. F. 3 2014 The annuity puzzle and an outline of its solution. Zbl 1411.91311 Ramsay, Colin M.; Oguledo, Victor I. 3 2018 On proofs in finitely presented groups. Zbl 1120.20032 Havas, George; Ramsay, Colin 2 2007 Experiments in coset enumeration. Zbl 1061.20024 Havas, George; Ramsay, Colin 2 2001 On a conjecture of Mahmoodian and Soltankhah regarding the existence of \((v,k,t)\) trades. Zbl 0963.05014 Gray, Brenton D.; Ramsay, Colin 2 1998 On the number of Pasch configurations in a Steiner triple system. Zbl 0915.05016 Gray, Brenton D.; Ramsay, Colin 2 1998 On the spectrum of \([v,k,t]\) trades. Zbl 0930.05012 Gray, Brenton D.; Ramsay, Colin 2 1998 Short balanced presentations of perfect groups. Zbl 1061.20025 Havas, George; Ramsay, Colin 2 2003 On blocked Poisson processes in risk theory. Zbl 0723.62064 Ramsay, Colin M. 2 1991 Optimal disability insurance with moral hazards: absenteeism, presenteeism, and shirking. Zbl 1414.91228 Ramsay, Colin M.; Oguledo, Victor I. 2 2015 Doubly enhanced annuities (DEANs) and the impact of quality of long-term care under a multi-state model of activities of daily living (ADL). Zbl 1437.91399 Ramsay, Colin M.; Oguledo, Victor I. 2 2020 Ruin probabilities and the compound Poisson-Markov chain. Zbl 0661.62112 Ramsay, Colin M. 1 1986 Parallel coset enumeration using threads. Zbl 0996.68002 Havas, George; Ramsay, Colin 1 2000 Smallest defining sets of some STS(19). Zbl 1003.05013 Adams, Peter; Khodkar, Abdollah; Ramsay, Colin 1 2001 Some results on defining sets of \(t\)-designs. Zbl 0927.05006 Gray, Brenton D.; Ramsay, Colin 1 1999 Andrews-Curtis and Todd-Coxeter proof words. Zbl 1047.20024 Havas, George; Ramsay, Colin 1 2003 A system of integro-differential-difference equations in risk theory, using compound birth-death processes. Zbl 0583.62090 Ramsay, Colin M. 1 1985 The moments of compound interest functions when interest fluctuates as a compound Markov chain. Zbl 0605.62129 Ramsay, Colin M. 1 1986 An algorithm for completing partials, with an application to the smallest defining sets of the STS(15). Zbl 0903.05013 Ramsay, Colin 1 1997 Pricing optional group term insurance: a new approach using reservation prices. Zbl 1111.91024 Ramsay, Colin M. 1 2005 The linear model revisited. Zbl 0744.62146 Ramsay, Colin M. 1 1991 The problem of irregular perfect systems of sets of iterated differences. Zbl 0868.05011 Ramsay, Colin; Rogers, Douglas G. 1 1997 Uniform perfect systems of sets of iterated differences of size 4. Zbl 0886.05030 Hamilton, G. M.; Ramsay, C.; Roberts, I. T.; Rogers, D. G. 1 1996 On a family of STS\((v)\) whose smallest defining sets contain at least \(b/4\) blocks. Zbl 0876.05007 Ramsay, Colin 1 1997 An algorithm for enumerating trades in designs, with an application to defining sets. Zbl 0876.05008 Ramsay, Colin 1 1997 Annuity distributions. A new class of compound Poisson distributions. Zbl 0789.62089 Ramsay, Colin M. 1 1993 Exploring the optimal design of an employer-sponsored sickness-disability compensation insurance plan when sickness presenteeism is penalized. Zbl 1416.91218 Ramsay, Colin M.; Oguledo, Victor I.; Krutto, Annika 1 2018 Doubly enhanced annuities (DEANs) and the impact of quality of long-term care under a multi-state model of activities of daily living (ADL). Zbl 1437.91399 Ramsay, Colin M.; Oguledo, Victor I. 2 2020 The annuity puzzle and an outline of its solution. Zbl 1411.91311 Ramsay, Colin M.; Oguledo, Victor I. 3 2018 Exploring the optimal design of an employer-sponsored sickness-disability compensation insurance plan when sickness presenteeism is penalized. Zbl 1416.91218 Ramsay, Colin M.; Oguledo, Victor I.; Krutto, Annika 1 2018 Optimal disability insurance with moral hazards: absenteeism, presenteeism, and shirking. Zbl 1414.91228 Ramsay, Colin M.; Oguledo, Victor I. 2 2015 All simple groups with order from 1 million to 5 million are efficient. Zbl 1337.20007 Campbell, C. M.; Havas, G.; Ramsay, C.; Robertson, E. F. 3 2014 Pricing high-risk and low-risk insurance contracts with incomplete information and production costs. Zbl 1284.91266 Ramsay, Colin M.; Oguledo, Victor I.; Pathak, Priya 4 2013 Insurance pricing with complete information, state-dependent utility, and production costs. Zbl 1237.91138 Ramsay, Colin M.; Oguledo, Victor I. 8 2012 The distribution of compound sums of Pareto distributed losses. Zbl 1224.91083 Ramsay, Colin M. 6 2009 The distribution of sums of i.i.d. Pareto random variables with arbitrary shape parameter. Zbl 1165.62010 Ramsay, Colin M. 5 2008 Defining set spectra for designs can have arbitrarily large gaps. Zbl 1159.05007 Havas, George; Lawrence, Julie L.; Ramsay, Colin; Street, Anne Penfold; Yazıcı, Emine Şule 4 2008 Exact waiting time and queue size distributions for equilibrium \(M/G/1\) queues with Pareto service. Zbl 1172.90365 Ramsay, Colin M. 8 2007 On the efficiency of the simple groups of order less than a million and their covers. Zbl 1133.20015 Campbell, Colin M.; Havas, George; Ramsay, Colin; Robertson, Edmund F. 4 2007 Determining the optimum guarantee period for a one-life retirement annuity. Zbl 1480.91209 Goda, Gopi Shah; Ramsay, Colin M. 4 2007 On proofs in finitely presented groups. Zbl 1120.20032 Havas, George; Ramsay, Colin 2 2007 The distribution of sums of certain i.i.d. Pareto variates. Zbl 1084.62013 Ramsay, Colin M. 15 2006 Pricing optional group term insurance: a new approach using reservation prices. Zbl 1111.91024 Ramsay, Colin M. 1 2005 Nice efficient presentations for all small simple groups and their covers. Zbl 1053.20013 Campbell, Colin M.; Havas, George; Ramsay, Colin; Robertson, Edmund F. 8 2004 A solution to the ruin problem for Pareto distributions. Zbl 1055.91056 Ramsay, Colin M. 21 2003 Defining sets in combinatorics: A survey. Zbl 1031.05020 Donovan, Diane; Mahmoodian, E. S.; Ramsay, Colin; Street, Anne Penfold 16 2003 Breadth-first search and the Andrews-Curtis conjecture. Zbl 1059.20029 Havas, George; Ramsay, Colin 9 2003 Short balanced presentations of perfect groups. Zbl 1061.20025 Havas, George; Ramsay, Colin 2 2003 Andrews-Curtis and Todd-Coxeter proof words. Zbl 1047.20024 Havas, George; Ramsay, Colin 1 2003 Experiments in coset enumeration. Zbl 1061.20024 Havas, George; Ramsay, Colin 2 2001 Smallest defining sets of some STS(19). Zbl 1003.05013 Adams, Peter; Khodkar, Abdollah; Ramsay, Colin 1 2001 On the spectrum of Steiner \((v, k, t)\) trades. I. Zbl 0959.05014 Gray, Brenton D.; Ramsay, Colin 7 2000 Proving a group trivial made easy: a case study in coset enumeration. Zbl 0985.20019 Havas, George; Ramsay, Colin 5 2000 Parallel coset enumeration using threads. Zbl 0996.68002 Havas, George; Ramsay, Colin 1 2000 On the spectrum of Steiner \((v, k, t)\) trades. II. Zbl 0939.05015 Gray, Brenton D.; Ramsay, Colin 7 1999 Some results on defining sets of \(t\)-designs. Zbl 0927.05006 Gray, Brenton D.; Ramsay, Colin 1 1999 Completely separating systems of \(k\)-sets. Zbl 0892.05048 Ramsay, Colin; Roberts, Ian T.; Ruskey, Frank 4 1998 On a conjecture of Mahmoodian and Soltankhah regarding the existence of \((v,k,t)\) trades. Zbl 0963.05014 Gray, Brenton D.; Ramsay, Colin 2 1998 On the number of Pasch configurations in a Steiner triple system. Zbl 0915.05016 Gray, Brenton D.; Ramsay, Colin 2 1998 On the spectrum of \([v,k,t]\) trades. Zbl 0930.05012 Gray, Brenton D.; Ramsay, Colin 2 1998 An algorithm for completing partials, with an application to the smallest defining sets of the STS(15). Zbl 0903.05013 Ramsay, Colin 1 1997 The problem of irregular perfect systems of sets of iterated differences. Zbl 0868.05011 Ramsay, Colin; Rogers, Douglas G. 1 1997 On a family of STS\((v)\) whose smallest defining sets contain at least \(b/4\) blocks. Zbl 0876.05007 Ramsay, Colin 1 1997 An algorithm for enumerating trades in designs, with an application to defining sets. Zbl 0876.05008 Ramsay, Colin 1 1997 Minimal completely separating systems of sets. Zbl 0847.05096 Ramsay, Colin; Roberts, Ian T. 8 1996 Uniform perfect systems of sets of iterated differences of size 4. Zbl 0886.05030 Hamilton, G. M.; Ramsay, C.; Roberts, I. T.; Rogers, D. G. 1 1996 Annuity distributions. A new class of compound Poisson distributions. Zbl 0789.62089 Ramsay, Colin M. 1 1993 On blocked Poisson processes in risk theory. Zbl 0723.62064 Ramsay, Colin M. 2 1991 The linear model revisited. Zbl 0744.62146 Ramsay, Colin M. 1 1991 Ruin probabilities and the compound Poisson-Markov chain. Zbl 0661.62112 Ramsay, Colin M. 1 1986 The moments of compound interest functions when interest fluctuates as a compound Markov chain. Zbl 0605.62129 Ramsay, Colin M. 1 1986 A system of integro-differential-difference equations in risk theory, using compound birth-death processes. Zbl 0583.62090 Ramsay, Colin M. 1 1985 The asymptotic ruin problem when the healthy and sick periods form an alternating renewal process. Zbl 0543.62092 Ramsay, Colin M. 6 1984 all cited Publications top 5 cited Publications all top 5 Cited by 219 Authors 20 Ramsay, Colin M. 7 Havas, George 6 Oguledo, Victor I. 5 Soltankhah, Nasrin 4 Donovan, Diane M. 3 Albrecher, Hansjörg 3 Cavenagh, Nicholas J. 3 Constantinescu, Corina D. 3 Guralnick, Robert Michael 3 Hajiabolhassan, Hossein 3 Kantor, William M. 3 Kassabov, Martin 3 Lefevre, James G. 3 Lubotzky, Alexander 3 Rashidi, Saeedeh 3 Roberts, Ian T. 3 Robertson, Edmund Frederick 3 Yazıcı, Emine Şule 2 Avram, Florin 2 Besharati, Nazli 2 Bollobás, Béla 2 Conder, Marston Donald Edward 2 Daneshgar, Amir 2 Demirkale, Fatih 2 Kortschak, Dominik 2 Mahmoodian, Ebadollah S. 2 Martire, Antonio Luciano 2 Mortezaeefar, M. 2 Newman, Michael Frederick 2 O’Brien, Eamonn A. 2 Rogers, Douglas G. 2 Rojas-Nandayapa, Leonardo 2 Rylands, Leanne J. 2 Samorodnitsky, Gennady Pinkhosovich 2 Scott, Alexander D. 2 Tichler, Krisztián 2 Waterhouse, Mary 2 Yang, Hailiang 1 Abbas, Karim 1 Alvarez, Enrique E. 1 Arab, Idir 1 Arcila, Luis David 1 Baird, Mark E. 1 Banik, Abhijit Datta 1 Bean, Richard Winston 1 Bégin, Jean-François 1 Bennett, G. Kemble 1 Bian, Hong 1 Bladt, Mogens 1 Bogley, William A. 1 Böhm, Matthias 1 Boros, Endre 1 Boutsikas, Michael V. 1 Bray, John N. 1 Campbell, Colin Matthew 1 Chade, Hector 1 Chan, Wenyaw 1 Chen, An 1 Chen, Guoqiang 1 Chen, Mi 1 Chen, Yusha 1 Cheurfa, Fatah 1 Choi, Kyoung Jin 1 Churchill, Gregory 1 Cooperman, Gene 1 D’Amico, Guglielmo 1 De Angelis, Paolo 1 De Marchis, Roberto 1 Deelstra, Griselda 1 Devolder, Pierre 1 Dufresne, Daniel 1 Duncan, Janet 1 Edjvet, Martin 1 Fanzeres, Bruno 1 Feng, Jiang 1 Fiori, Anna Maria 1 Gao, Guangyuan 1 Ghebleh, Mohammad 1 Gillespie, Neil I. 1 Gismondi, Fulvio 1 Goddyn, Luis A. 1 Gómez-Déniz, Emilio 1 González-Martel, Christian 1 Grahovac, Danijel 1 Grannell, Michael John 1 Gray, Brenton D. 1 Griggs, Terry S. 1 Grinberg, Victor S. 1 Grüttmüller, Martin 1 Gudmundarson, Ragnar Levy 1 Guerra, Manuel 1 Guyot, Luc 1 Hadjikyriakou, Milto 1 Hamilton, G. M. 1 Hartung, René 1 Hashorva, Enkelejd 1 Hernández, Juan M. 1 Holt, Derek F. 1 Horváth, András 1 Hürlimann, Werner ...and 119 more Authors all top 5 Cited in 65 Serials 12 Insurance Mathematics & Economics 11 Discrete Mathematics 8 Graphs and Combinatorics 8 North American Actuarial Journal 6 Communications in Statistics. Theory and Methods 6 Scandinavian Actuarial Journal 5 International Journal of Algebra and Computation 4 Journal of Algebra 3 European Actuarial Journal 2 Discrete Applied Mathematics 2 Journal of Statistical Planning and Inference 2 European Journal of Combinatorics 2 Statistics & Probability Letters 2 Journal of the American Mathematical Society 2 Queueing Systems 2 European Journal of Operational Research 2 Mathematical Problems in Engineering 1 Bulletin of the Australian Mathematical Society 1 Communications in Algebra 1 Physica A 1 Mathematics of Computation 1 Advances in Mathematics 1 Algebra and Logic 1 Applied Mathematics and Computation 1 Blätter (Deutsche Gesellschaft für Versicherungsmathematik) 1 Commentationes Mathematicae Universitatis Carolinae 1 Journal of Combinatorial Theory. Series A 1 Journal of Combinatorial Theory. Series B 1 Journal of Computational and Applied Mathematics 1 Journal of Economic Theory 1 Journal of Multivariate Analysis 1 Mathematische Zeitschrift 1 Proceedings of the American Mathematical Society 1 Scandinavian Actuarial Journal 1 Transactions of the American Mathematical Society 1 Acta Mathematicae Applicatae Sinica 1 Acta Applicandae Mathematicae 1 Acta Mathematicae Applicatae Sinica. English Series 1 Journal of Symbolic Computation 1 Applied Mathematics Letters 1 Economics Letters 1 Linear Algebra and its Applications 1 Experimental Mathematics 1 Journal of Combinatorial Designs 1 European Series in Applied and Industrial Mathematics (ESAIM): Probability and Statistics 1 Journal of Group Theory 1 Annals of Combinatorics 1 Journal of Discrete Mathematical Sciences & Cryptography 1 Extremes 1 LMS Journal of Computation and Mathematics 1 Journal of the European Mathematical Society (JEMS) 1 Probability in the Engineering and Informational Sciences 1 Methodology and Computing in Applied Probability 1 The ANZIAM Journal 1 Applied Mathematics E-Notes 1 Decisions in Economics and Finance 1 Stochastic Models 1 Mathematics in Computer Science 1 Journal of Statistical Theory and Practice 1 Journal of Topology and Analysis 1 Groups, Complexity, Cryptology 1 Science China. Mathematics 1 Iranian Journal of Mathematical Chemistry 1 International Journal of Group Theory 1 Communications in Combinatorics and Optimization all top 5 Cited in 18 Fields 44 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 43 Combinatorics (05-XX) 27 Group theory and generalizations (20-XX) 27 Statistics (62-XX) 23 Probability theory and stochastic processes (60-XX) 11 Computer science (68-XX) 5 Operations research, mathematical programming (90-XX) 4 Manifolds and cell complexes (57-XX) 3 Integral transforms, operational calculus (44-XX) 3 Numerical analysis (65-XX) 2 Special functions (33-XX) 2 Integral equations (45-XX) 2 Geometry (51-XX) 2 Biology and other natural sciences (92-XX) 1 Algebraic geometry (14-XX) 1 \(K\)-theory (19-XX) 1 Convex and discrete geometry (52-XX) 1 Differential geometry (53-XX) Citations by Year