Browsing Natural and Agricultural Sciences by Author "Pretorius, Lou M. (Lourens Martin)"

Browsing Natural and Agricultural Sciences by Author "Pretorius, Lou M. (Lourens Martin)"

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  • Embedding a Latin square with transversal into a projective space 
    Pretorius, Lou M. (Lourens Martin); Swanepoel, Konrad Johann (Elsevier, 2011-07)
    A Latin square of side n defines in a natural way a finite geometry on 3n points, with three lines of size n and n2 lines of size 3. A Latin square of side n with a transversal similarly defines a finite geometry on 3n+1 ...
  • Veralgemeende Sylvester-Gallai Stelling 
    Swanepoel, Konrad Johann; Pretorius, Lou M. (Lourens Martin) (Suid Afrikaanse Akademie vir Wetenskap & Kuns, 2007-03)
    Ons gee 'n algoritmiese bewys vir die kontrapositief van die volgende stelling wat onlangs deur die outeurs bewys is: Laat S 'n eindige versameling van punte in die vlak wees, met elke punt rooi, blou of met beide kleure ...