The effect of removing a 2-downer edge or a cut 2-downer edge triangle for an eigenvalue
Edges in the graph associated with a square matrix over a field may be classified as to how their removal affects the multiplicity of an identified eigenvalue. There are five possibilities: +2+2 (2-Parter); +1+1 (Parter); no change (neutral); −1-1 (downer); and −2-2 (2-downer). Especially, it is kno...
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-03-01
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| Series: | Special Matrices |
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| Online Access: | https://doi.org/10.1515/spma-2022-0186 |