| Naslov: | Distance-regular Cayley graphs on dihedral groups |
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| Avtorji: | ID Miklavič, Štefko (Avtor)
ID Potočnik, Primož (Avtor) |
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| Datoteke: |  http://www.imfm.si/preprinti/PDF/00989.pdf
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | IAM - Inštitut Andrej Marušič
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| Opis: | The main result of this article is a classification of distance-regular Cayley graphs on dihedral groups. There exist four obvious families of such graphs, which are called trivial. These are: complete graphs, complete bipartite graphs, complete bipartite graphs with the edges of a 1-factor removed, and cycles. It is proved that every non-trivial distance-regular Cayley graph on a dihedral group is bipartite, non-antipodal, has diameter 3 and arises either from a cyclic di#erence set, or possibly (if any such exists) from a dihedral difference set satisfying some additional conditions. Finally, all distance-transitive Cayley graphs on dihedral groups are determined. It transpires that a Cayley graph on a dihedral group is distance-transitive if and only if it is trivial, or isomorphic to the incidence or to the non-incidence graph of a projective space ▫$\mathrm{PG}_{d-1} (d,q)$▫, ▫$d \ge 2$▫, or the unique pair of complementary symmetric designs on 11 vertices. |
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| Ključne besede: | mathematics, grah theory, distance-regular graph, distance-transitive graph, Cayley graph, dihedral group, dihedrant, difference set |
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| Leto izida: | 2005 |
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| Št. strani: | str. 1-27 |
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| Številčenje: | Vol. 43, št. 989 |
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| PID: | 20.500.12556/RUP-4414  |
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| ISSN: | 1318-4865 |
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| UDK: | 519.17 |
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| COBISS.SI-ID: | 13784665 |
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| Datum objave v RUP: | 10.07.2015 |
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| Število ogledov: | 3070 |
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| Število prenosov: | 97 |
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| Metapodatki: |    |
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