The N-matrix completion problem under digraphs assumptions
✍ Scribed by C Mendes Araújo; Juan R Torregrosa; Ana M Urbano
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 209 KB
- Volume
- 380
- Category
- Article
- ISSN
- 0024-3795
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📜 SIMILAR VOLUMES
An n × n matrix is called an N -matrix if all its principal minors are negative. In this paper, we are interested in the symmetric N -matrix completion problem, that is, when a partial symmetric N -matrix has a symmetric N -matrix completion. Here, we prove that a partial symmetric N -matrix has a s
Necessary and sufficient conditions are given on the data for completability of a partial symmetric inverse M-matrix, the graph of whose specified entries is a cycle, and these conditions coincide with those we identify to be necessary in the general (nonsymmetric) case. Graphs for which all partial