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- (with Y. Unlu) On semigroup presentations,
Proc. Edinburgh Math. Soc.
**36**(1993), 55-68. - (with C. M. Campbell & R. M. Thomas) On a class of semigroups
with symmetricpresentations, Semigroup Forum
**46**(1993), 286-306. - (with D. B. Nikolova) One more infinite Fibonacci group,
C. R. Acad. Bulgare Sci.
**46**(3) (1993), 13-15. - (with B. Vatansever) A new efficient presentation for PSL(2,13)
and the structure of the groups G(7,m), Doda-Tr. J. of
Mathematics
**17**(1993), 148-154.## 1994

- (with G. Havas) Application of computational tools for finitely
presented groups, DIMACS
**15**(1994), 29-39. - (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Fibonacci
semigroups, J. Pure Appl. Algebra
**94**(1994), 49-57. - (with C. M. Campbell & M. D. E. Conder) Defining-relations
for Hurwitz groups, Glasgow Math. J.
**35**(1994), 363-371.## 1995

- (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Reidemeister-
Schreier type rewriting for semigroups, Semigroup Forum
**51**(1995), 47-62. - (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Semigroup
and group presentations, Bull. London Math. Soc.
**27**(1995), 46-50. - (with C. M. Campbell, N. Ruskuc & R. M. Thomas) On
semigroups defined by Coxeter type presentations, Proc. Roy. Soc.
Edinburgh
**125A**(1995), 1063-1075. - (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Rewriting
a semigroup presentation, Internat. J. Algebra Comput.
**5**(1995), 81-103. - (with C. M. Campbell, N. Ruskuc, R. M. Thomas & Y. Unlu) Certain
one relator products of semigroups, Comm. Algebra
**23**(1995), 5207-5219. - (with M. J. Brookes & C. M. Campbell) Efficiency and direct products of groups, Groups-Korea '94 , Walter de Gruyter, (Berlin - NewYork, 1995), 25-33.
- (with R. M. Thomas & C. I. Wotherspoon) A class of inefficient groups with symmetric presentation, Groups-Korea '94 , Walter de Gruyter, (Berlin - NewYork, 1995), 277-284.
- (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Semigroup
presentations and minimal ideals, Combinatorial and Geometric
Group Theory, Cambridge University Press (1995), 29-42.
## 1996

- (with C. M. Campbell, N. Ruskuc & R. M. Thomas) On
subsemigroups of finitely presented semigroups, J. Algebra
**180**(1996), 1-21. - (with C. M. Campbell, N. Ruskuc & R. M. Thomas) On
subsemigroups and ideals in free products of semigroups,
Internat. J. Algebra Comput.
**6**(1996), 571-591. - (with G. Havas) Central factors of deficiency zero groups,
Comm. Algebra
**24**(1996), 3483-3487.## 1997

- (with C. M. Campbell, I. Miyamoto, & P. D. Williams) Efficient
presentations for PSL(2,p)^3 and other direct products of groups,
Glasgow Math. J.
**39**(1997), 259-268. - (with C. M. Campbell & P. D. Williams) Efficient presentations for
direct powers of imperfect groups, Algebra Colloq.
**4**(1997), 21-27.## 1998

- (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Presentations
for subsemigroups - applications to ideals of semigroups, J. Pure
Appl. Algebra
**124**(1998), 47-64. - (with C. M. Campbell, G. Havas & S. A. Linton) Symmetric presentations and orthogonal groups, Proc. ATLAS 10 years on , Cambridge University Press, (1998), 1-10.
- (with N. Ruskuc & J. Wiegold) Generators and relations of direct
products of semigroups, Trans. Amer. Math. Soc.
**350**(1998), 2665-2685. - (with S. A. Linton, G. Pfeiffer & N. Ruskuc) Groups and actions in
transformation semigroups,
Mathematische Zeitschrift
**228**(1998), 435-450. - (with T. S. Blyth) Basic linear algebra
, Springer-Verlag, Heidelberg (1998).
## 1999

- (joint editor with C. M. Campbell, N. Ruskuc & G. C. Smith) Groups St Andrews 1997 in Bath Volume 1, Cambridge University Press, Cambridge (1999).
- (joint editor with C. M. Campbell, N. Ruskuc & G. C. Smith) Groups St Andrews 1997 in Bath Volume 2, Cambridge University Press, Cambridge (1999).
- (with P. Z. Hermann & N. Ruskuc) On products of all elements
of a finite semigroup,
Proc. Edinburgh Math. Soc.
**42**(1999), 551-557. - (with A. J. Duncan & N. Ruskuc) Automatic monoids and change of
generators, Proc. Cambridge Philos. Soc.
**127**(1999), 403-409. - (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Groups,
semigroups and finite presentations, Geometric Group Theory Down
Under, Walter de Gruyter (1999), 55-69.
## 2000

- (with M. Atkinson, N. Gilbert, J. Howie & S. Linton) Computational and geometric aspects of modern algebra, Cambridge University Press, Cambridge (2000).
- (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Direct products of
automatic semigroups,J. Austral. Math. Soc.
**69**(2000), 19-24.## 2001

- (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Automatic semigroups,
Theoret. Comput. Sci.
**250**(2001), 365-391. - (with T. S. Blyth) Further linear algebra , Springer-Verlag, Heidelberg (2001).
- (with N. Ruskuc & M. R. Thomson)
On diagonal acts of monoids, Bull. Austral. Math. Soc.
**63**(2001), 167-175.## 2002

- (with C. M. Campbell, N. Ruskuc & R. M. Thomas) Automatic
completely-simple semigroups, Acta Math. Hungar.
**95**(2002), 201-215. - (with S. A. Linton, G. Pfeiffer & N. Ruskuc) Computing
transformation semigroups, J. Symbolic. Comp.
**33**(2002), 145-162. - (with C. M. Campbell, G. Havas & A. Hulpke) The simple group L_3(5) is efficient, Comm. Alg. , 30 (2002), 971-975.
- (with N. Ruskuc & M. R. Thomson)
On finite generation and other finiteness conditions
for wreath products of semigroups Comm. Algebra
**30**(2002), 3851--3873. - (with J. J. O'Connor) William Rowan Hamilton 1805-1865, Physicists of Ireland : Passion and Precision, Institute of Physics (2002), 61-68.
- (with J. J. O'Connor) George Francis FitzGerald 1851-1901,
Physicists of Ireland : Passion and
Precision, Institute of Physics (2002), 135-142.
## 2003

- (with N. Ruskuc & M. R. Thomson)
Finite generation and presentability of wreath products of monoids,
J. Algebra
**266**(2) (2003), 382-392. - (with G. Havas) Irreducible cyclic presentations of the trivial group,
Experimental mathematics,
**12**(2003), 487-490. - (with C. M. Campbell, P. P. Campbell & B. T. K. Hopson)
On the efficiency of direct powers of PGL(2, p),
Res. Exp. Math.
**27**(2003), 27-34. - (with J. J. O'Connor), The life of Johann Benedict Listing,
Strabismus
**11**(4) (2003), 247-250. - (joint editor with C. M. Campbell & G. C. Smith) Groups St Andrews 2001 in Oxford Volume 1, Cambridge University Press, Cambridge (2003).
- (joint editor with C. M. Campbell & G. C. Smith) Groups St Andrews 2001 in Oxford Volume 2, Cambridge University Press, Cambridge (2003).
- Pappus of Alexandria and the Mathematics of Late Antiquity,
J. Roman Studies
**93**(2003), 118-119. - (with J. J. O'Connor), Lars Valerian Ahlfors, in
Michael Atiyah and Daniel Iagolnitzer (eds.), Fields Medallists' lectures
(World Scientific Publishing
Co., Inc., River Edge, NJ, 2003), 3-4.
## 2004

- (with J. J. O'Connor) Isaac Barrow, Biographical Dictionary of British Economists (2004).
- (with J. J. O'Connor) William Ernest Johnson, Biographical Dictionary of British Economists (2004).
- (with J. J. O'Connor) Obituary David Allan Spence January 3, 1926-
September 7, 2003, Austral. Math. Soc. Gaz.
**31**(1) (2004), 58-59. - (with C. M. Campbell, P.P. Campbell & H. Doostie),
Fibonacci lengths for certain
metacyclic groups, Algebra Colloquium (2)
**11**(2004), 215-222. - (with C. M. Campbell, P.P. Campbell & H. Doostie),
On the Fibonnaci length of powers of dihedral groups,
Applications of Fibonacci numbers
**9**(2004), 69-85. - (with C. M. Campbell, G. Havas & C. Ramsay) Nice efficient
presentations for all small simple groups and their covers, LMS J.
Comput. Math.
**7**(2004), 266-283. - (with Peter Brooksbank, Hongxun Qin & Akos Seress) On
Dowling geometries of infinite groups, J. Combinatorial Theory (Ser. A)
(1)
**108**(2004), 155-158.## 2005

- (with George Havas) The F^{a,b,c}
Conjecture, I, Irish Math. Soc. Bulletin
**56 (2005), 75-80.** **(with J. J. O'Connor) Ten years of the History of Mathematics on the Web, Proceedings of the 3rd Conference on the History of Mathematics, OCTOGON Mathematical Magazine (Fulgur Publisher, Miskolc-Brasso-Kronstadt-Brasov, 2005), 102-107.****(with J. J. O'Connor) Knots and Physics in 19th Century Scotland, Proceedings of the 3rd Conference on the History of Mathematics, OCTOGON Mathematical Magazine (Fulgur Publisher, Miskolc-Brasso-Kronstadt-Brasov, 2005), 108-115.**## To appear

**(with A. J. Cain & N. Ruskuc) Subsemigroups of virtually free groups: Finite Malcev presentations and testing for freeness (submitted).****(with A. J. Cain & N. Ruskuc) Malcev presentations and automatic semigroups (submitted).**There is a list of abstracts of some of these papers here

There is a list of abstracts of some of these papers here

Back to Edmund Robertson's home page.