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Vol. 16 No. 4, 1988 December

Perfect graphs and kernels
C. BERGE and P. DUCHET JAMES R. CLAY
Geometric and combinatorial ideas related to circular planar nearrings
JAMES R. CLAY
On the capacity of write-unidirectional memories
GERARD COHEN
Computer programs for investigating syntactic near-rings of finite group-semiautomata
YUEN FONG (方源) and J. R. CLAY
Extremal problems and the Lagrange function for hypergraphs
P. FRANKL and Z. FUREDI
Some results on ascending subgraph decomposition
HUNG-LIN FU (傅恆霖) 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})$
NOBORU HAMADA and MICHEL DEZA
2-class subschemes of rational G-schemes
HUA-MIN HUANG (黃華民)
Further results on the E-K-R theorem for the distance regular graphs $H_q$ (k,n)
TAYUAN HUANG (黃大原) Download PDF
Ranks of chordal graphs
KO-WEI LIH (李國偉) Download PDF
Some results on cyclic UEP codes
MAO-CHAO LIN (林茂昭) Download PDF
A simple proof for the maximal planar case of Steinitz's theorem
HIROSHI MAEHARA
Graphs which have no finite planar covering
SEIYA NEGAMI
PROBLEM SESSION