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Explicit constructions of graphs without short cycles and low density codes. (English) Zbl 0492.05044

MSC:
05C35 Extremal problems in graph theory
05C38 Paths and cycles
94B05 Linear codes (general theory)
05C25 Graphs and abstract algebra (groups, rings, fields, etc.)
20H05 Unimodular groups, congruence subgroups (group-theoretic aspects)
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[1] P. Erdos andH. Sachs, Reguläre Graphen gegebener Taillenweite mit minimaler Knotenzahl,Wiss. Z. Univ. Halle–Wittenberg, Math.-Nat. R. 12 (1963), 251–258. · Zbl 0116.15002
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[6] I. Kra,Automorphic forms and Kleinian groups, Benjamin, Reading, Mass. 1972. · Zbl 0253.30015
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