Vol.15, No.4

  Perfect graphs and kernels

Download PDF

  Geometric and combinatorial ideas related to circular planar nearrings

Download PDF

  On the capacity of write-unidirectional memories

Download PDF

  Computer programs for investigating syntactic near-rings of finite group-semiautomata

Download PDF

  Extremal problems and the Lagrange function for hypergraphs

Download PDF

  Some results on ascending subgraph decomposition

Download PDF

  A characterization of some (n,k,d, q )-codes meeting the Griesmer bound for given integers $ k \geq 3$, $q \geq 5$ and $d=q^{k-1}-q^{\alpha}-q^{\beta}-q^{\gamma}$ $(0 \leq \alpha \leq \beta < {\gamma} < {k-1}$ or$ 0 \leq \alpha < \beta \leq {\gamma} < {k-1})$

Download PDF

  2-class subschemes of rational G-schemes

Download PDF

  Further results on the E-K-R theorem for the distance regular graphs $H_q$ (k,n)

Download PDF

  Ranks of chordal graphs

Download PDF

  Some results on cyclic UEP codes

Download PDF

  A simple proof for the maximal planar case of Steinitz's theorem

Download PDF

  Graphs which have no finite planar covering

Download PDF

  PROBLEM SESSION

Download PDF