Properties of Hadamard product of inverse M-matrices
β Scribed by Chuansheng Yang; Chengxian Xu
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 102 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1070-5325
- DOI
- 10.1002/nla.364
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In this paper all the so-called checkered Hadamard matrices of order 16 are determined (i.e., Hadamard matrices consisting of 16 square blocks H i j of order 4 such that H ii = J 4 and H i j J 4 = J 4 H i j = 0 for i = j and where J 4 is the all-one matrix of order 4). It is shown that the checkered
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Let bp(+K v ) be the minimum number of complete bipartite subgraphs needed to partition the edge set of +K v , the complete multigraph with + edges between each pair of its v vertices. Many papers have examined bp(+K v ) for v 2+. For each + and v with v 2+, it is shown here that if certain Hadamard