A lower bound for the energy of symmetric matrices and graphs
The energy of a symmetric matrix is the sum of the absolute values of its eigenvalues. We introduce a lower bound for the energy of a symmetric partitioned matrix into blocks. This bound is related to the spectrum of its quotient matrix. Furthermore, we study necessary conditions for the equality. A...
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| Other Authors: | , |
| Format: | article |
| Language: | eng |
| Published: |
2018
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10773/16240 |
| Country: | Portugal |
| Oai: | oai:ria.ua.pt:10773/16240 |