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Now showing items 1-10 of 14

#### Clifford-Fischer theory applied to certain groups associated with symplectic, unitary and Thompson groups.

(2012)

The character table of a finite group is a very powerful tool to study the groups and to prove
many results. Any finite group is either simple or has a normal subgroup and hence will be of
extension type. The classification ...

#### On convection and flow in porous media with cross-diffusion.

(2012)

In this thesis we studied convection and cross-diffusion effects in porous media.
Fluid flow in different flow geometries was investigated and the equations for momentum, heat and mass transfer transformed into a system ...

#### Aspects of distance measures in graphs.

(2011)

In this thesis we investigate bounds on distance measures, namely, Steiner diameter and radius, in terms of other graph parameters. The thesis consists of four chapters. In Chapter 1, we define the most significant terms ...

#### Fischer-Clifford theory and character tables of group extensions.

(1998)

The smallest Fischer sporadic simple group Fi22 is generated by a conjugacy class D of 3510 involutions called 3-transpositions such that the product of any noncommuting pair is an element of order 3. In Fi22 there are ...

#### Singularity and symmetry analysis of differential sequences.

(2009)

We introduce the notion of differential sequences generated by generators of sequences. We discuss the Riccati sequence in terms of symmetry analysis,
singularity analysis and identification of the complete symmetry group ...

#### Coherent structures and symmetry properties in nonlinear models used in theoretical physics.

(1994)

This thesis is devoted to two aspects of nonlinear PDEs which are fundamental
for the understanding of the order and coherence observed in the underlying physical
systems. These are symmetry properties and soliton ...

#### Complete symmetry groups : a connection between some ordinary differential equations and partial differential equations.

(2008)

The concept of complete symmetry groups has been known for some time in applications to ordinary differential equations. In this Thesis we apply this concept to partial differential equations. For any 1+1 linear evolution ...

#### Measurement and modelling of households' demand and access to basic water in relation to the rapidly increasing household numbers in South Africa.

(2010)

Service delivery in post-apartheid South Africa has become a topical
issue both in the academia and the political arena . The rise of social
movements, the xenophobic tensions of May 2008 and protest actions could
be ...

#### Algebraic properties of ordinary differential equations.

(1995)

In Chapter One the theoretical basis for infinitesimal transformations is
presented with particular emphasis on the central theme of this thesis which
is the invariance of ordinary differential equations, and their first ...

#### Consequences of architecture and resource allocation for growth dynamics of bunchgrass clones.

(2005)

In order to understand how bunchgrasses achieve dominance over other plant growth forms
and how they achieve dominance over one another in different environments, it is first
necessary to develop a detailed understanding ...