Articles by Author: Peter J Witbooi

Search results for Peter J Witbooi

We found 218 results for you
  1. Finite images of groups

    Finite images of groups

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We prove some theorems regarding the set of finite images of certain groups. The groups concerned include some two-generator one-relator groups, as well as (infinite) quotients of such groups. We also prove, by means of cancellation techniques, that certain groups,...
  2. Stochastic dynamics of an HIV/AIDS epidemic model with treatment

    Stochastic dynamics of an HIV/AIDS epidemic model with treatment

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We investigate a stochastic HIV/AIDS epidemic model with treatment. The model allows for two stages of infection namely the asymptomatic phase and the symptomatic phase. We prove existence of global positive solutions. We show that the solutions are stochastically ultimately...
  3. Productivity of <em>Eucalyptus regnans</em> Forest Regenerating after Bushfire

    Item type: Journal Article • Journal: South African Forestry Journal
    A natural forest of mountain ash was clearfelled in 1983 and burned by bushfire immediately after logging. The resulting natural regeneration has high productivity, with a mean volume increment close to 50 m3/ha per year, mean rate of biomass accumulation...
  4. Clarity and effective communication: the nature and aim of I.T. Maditsi's use of figurative language

    Clarity and effective communication: the nature and aim of I.T. Maditsi's use of figurative language

    Item type: Journal Article • Journal: South African Journal of African Languages
    Although figurative language is proportionately more frequent in poetry than in prose, I.T. Maditsi has frequently applied it successfully in his short stories. That being the case, this article aims to examine Maditsi's use of figurative language in his short...
  5. Editorial

    Editorial

    Item type: Journal Article • Journal: South African Journal of Philosophy
  6. Editorial

    Editorial

    Item type: Journal Article • Journal: South African Journal of Philosophy
  7. Editorial

    Editorial

    Item type: Journal Article • Journal: South African Journal of Philosophy
  8. Thomas Mofolo's “Chaka”: Literary interpretations and modifications of a hero

    Thomas Mofolo's “Chaka”: Literary interpretations and modifications of a hero

    Item type: Journal Article • Journal: South African Journal of African Languages
    In Mofolo's view Chaka was in the first instance not the founder of a nation but a human being eager to attain power. He was furthermore the cause for the difaqane, the period of chaotic wars and migrations of peoples...
  9. A Note On Homotopy Pushout And Homotopy Coherence

    A Note On Homotopy Pushout And Homotopy Coherence

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We present a self-contained argument, characterising a homotopy pushout square by recognising it as an initial object in a certain coherent homotopy category of spaces under a cotriad.