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112
Voted
DM
2008
15 years 27 days ago
2008
In this paper, the total chromatic number and fractional total chromatic number of circulant graphs are studied. For cubic circulant graphs we give upper bounds on the fractional ...
78
Voted
DM
2008
15 years 27 days ago
2008
LR design is introduced by the second author in his recent paper, and it plays a very important role in the construction of LKTS (a large set of disjoint Kirkman triple system). I...
70
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DM
2008
15 years 27 days ago
2008
Abstract. It is known that the weight enumerator of a self-dual doublyeven code in genus g = 1 can be uniquely written as an isobaric polynomial in certain homogeneous polynomials ...
61
Voted
DM
2008
15 years 27 days ago
2008
In this paper we show that for large primes the Giulietti-Ughi arcs in PG(2, p2) are not complete. In the second half of the paper we extend the original arc. Key words: Arc, Proj...
76
Voted
DM
2008
15 years 27 days ago
2008
We characterize all of the ways to represent the wheel matroids and whirl matroids using frame matroids of signed graphs. The characterization of wheels is in terms of topological...