7055 search results - page 244 / 1411 » Some New 4-Designs |
146
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AMC
2005
15 years 6 months ago
2005
In this paper, by using the theories and methods of mathematical analysis and computer algebra, a reliable algorithm of reduction of order approximation method for solving singula...
136
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ARSCOM
2005
15 years 6 months ago
2005
We prove several results dealing with various counting functions for partitions of an integer into four squares of equal parity. Some are easy consequences of earlier work, but tw...
152
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JCT
2007
15 years 6 months ago
2007
: We construct a new family of minimal non-orientable matroids of rank three. Some of these matroids embed in Desarguesian projective planes. This answers a question of Ziegler: fo...
170
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JCT
2007
15 years 6 months ago
2007
Let G be a simple graph with n vertices and m edges. Let ω(G) and α(G) be the numbers of vertices of the largest clique and the largest independent set in G, respectively. In th...
169
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JCT
2007
15 years 6 months ago
2007
ABSTRACT. We present an extension of the Delsarte linear programming method for spherical codes. For several dimensions it yields improved upper bounds including some new bounds on...