In this article, we will determine the crossing number of the complete tripartite graphs K,.3.n and K2,3.n. Our proof depends on Kleitman's results for the complete bipartite graphs [D. J. Kleitman, The crossing number of K5,n. J. Combhatorial Theory 9 (1970) 375-3231. a graph G is the minimum numbe
The crossing number of K11 is 100
β Scribed by Shengjun Pan; R. Bruce Richter
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 121 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0364-9024
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β¦ Synopsis
Abstract
The crossing number of K~n~ is known for nββ©½β10. We develop several simple counting properties that we shall exploit in showing by computer that cr(K~11~β=β100, which implies that cr(K~12~)β=β150. We also determine the numbers of nonβisomorphic optimal drawings of K~9~ and K~10~. Β© 2007 Wiley Periodicals, Inc. J Graph Theory 56: 128β134, 2007
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We prove t h a t t h e crossing number of C4 X Ca is 8.
## Abstract The crossing number __cr__(__G__) of a simple graph __G__ with __n__ vertices and __m__ edges is the minimum number of edge crossings over all drawings of __G__ on the β^2^ plane. The conjecture made by ErdΕs in 1973 that __cr__(__G__)ββ₯β__Cm__^3^/__n__^2^ was proved in 1982 by Leighton
Let G be a graph on n vertices and m edges. The book crossing number of G is defined as the minimum number of edge crossings when the vertices of G are placed on the spine of a k-page book and edges are drawn on pages, such that each edge is contained by one page. Our main results are t w o polynomi
## Abstract It has been long conjectured that the crossing number of __C~m~__βΓβ__C~n~__ is (__m__β2)__n__, for all __m__, __n__ such that __n__ββ₯β __m__ββ₯β 3. In this paper, it is shown that if __n__ββ₯β __m__(__m__β+β1) and __m__ββ₯β 3, then this conjecture holds. That is, the crossing number of __