### University of Wales, Bangor - School of Informatics

# Mathematics Preprints List - 1989

89.01 L.R.T. Gardner, G.A. Gardner and A.H.A. Ali,

A finite element solution to the Korteweg-de Vries equation using cubic
B-splines, 15pp.

89.02 J. Cunningham, G.A. Gardner, and L.R.T. Gardner,

The spatial spread of rabies, 9pp

89.03 G.A. Gardner, A.H.Ali and L.R.T. Gardner,

Simulations of solitons using quadratic spline shape functions, 17pp.

89.04 J. Cunningham, G.A. Gardner and L.R.T. Gardner,

Stochastic epidemics in logistic populations, 12pp.

89.05 R. Brown and P.J. Higgins,

Crossed complexes and chain complexes with operators, 32pp.

89.06 R. Brown and P.J. Higgins (revised as 91.11),

The classifying space of a crossed complex, 30pp.

89.07 R. Brown (revised as 99.21),

Some problems in non-Abelian homotopical and homological algebra, 24pp.

89.08 R. Brown,

q-Perfect groups and universal q-central extensions, 7pp.

89.09a L.R.T. Gardner and G.A. Gardner,

Solitary waves of the regularised long wave equation, 30pp.

89.09b L.R.T. Gardner, G.A. Gardner and S.I. Zaki,

Finite element solutions to a Fokker-Planck equation.

89.10 T. Porter,

Crossed modules, crossed

**n**-cubes and simplicial groups. 23pp.

**Published in:**

*Bull. Soc. Math. Belg.*41 (1989) 393-415.

89.11 L.R.T. Gardner, G.A. Gardner and S.I. Zaki,

A Finite Element solution to a modified Boltzmann equation, 15pp.

89.12 R. Brown, N.D. Gilbert and J. Shrimpton,

Symmetry objects in closed categories, 24pp.

89.13 T. Vougiouklis,

On some representations of hypergroups, 9pp.

89.14 T. Vougiouklis,

Fundamental relations and hypergroup representations, 20pp.

89.15 R. Brown and T. Porter,

Making a mathematical exhibition, 8pp.

89.16 International Category Theory Meeting, 3-7 July 1989, Abstracts.

89.17 J. Shrimpton,

Some groups related to the automorphism group of a directed graph, 24pp.

89.18 J. Cunningham, G.A. Gardner, and L.R.T. Gardner,

Computer modelling of epidemic spread, 9pp.

89.19a J. Cunningham, G.A. Gardner and L.R.T. Gardner,

Spatial spread of rabies, 15pp.

89.19b J. Cunningham, G.A. Gardner and L.R.T. Gardner,

Stochastic simulations of rabies spread, 10pp.

89.19c J. Cunningham, G.A. Gardner and L.R.T. Gardner,

Pseudo stochastic simulations of rabies spread, 12pp.

89.20 G.A. Gardner, L.R.T. Gardner and A.H.A. Ali,

Solitons of the modified Korteweg-de Vries equation, 14pp.

89.21 L.R.T. Gardner,

A dislocation model of double glide, 33pp.

89.22 G.A. Gardner, L.R.T. Gardner and J. Cunningham,

Simulations of a fox-rabies epidemic on an island using space-time finite elements, 25pp.

89.23 Ll.G.Chambers,

Solutions of the neutral differential-difference equation

89.24 R.Kassem, J.B.Owen, I.Fadel, H.Juha & C.J.Whitaker,

*Aspects of fertility and lamb survival in Awassi sheep under semi-arid
conditions*

**Published in:**
Research and Development in Agriculture 6 (1989) 161-168.

89.25 I.Fadel, J.B.Owen, R.Kassem & C.J.Whitaker,

*Aspects of the lactation curve in the Awassi ewe under semi-arid
conditions and the development of simplified milk recording*

**Published in:**
Research and Development in Agriculture 6 (1989) 169-176.

89.26 S.E.Jones, S.A.Ditner, C.Freeman, C.J.Whitaker & M.A.Lock,

*Comparison of a new inorganic membrane filter (anopore)
with a track-etched polycarbonate membrane filter (nuclepore)
for direct counting of bacteria*

**Published in:**
*Applied and environmental Microbiology* 55 (1989) 529-530.

89.27 R. Brown,

*Symmetry, groupoids, and higher-dimensional analogues*

**Published in:**
*Computers, Math. Applic.* 17 (1989) 49-57.