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https://hdl.handle.net/10316/7716
Title: | On the multiplicities of eigenvalues of a Hermitian matrix whose graph is a tree | Authors: | Fonseca, C. M. da | Issue Date: | 2008 | Citation: | Annali di Matematica Pura ed Applicata. 187:2 (2008) 251-261 | Abstract: | Abstract A different approach is given to recent results due mainly to R. C. Johnson and A. Leal Duarte on the multiplicities of eigenvalues of a Hermitian matrix whose graph is a tree. The techniques developed are based on some results of matching polynomials and used a work by O. L. Heilmann and E. H. Lieb on an apparently unrelated topic. | URI: | https://hdl.handle.net/10316/7716 | DOI: | 10.1007/s10231-007-0044-3 | Rights: | openAccess |
Appears in Collections: | FCTUC Matemática - Artigos em Revistas Internacionais |
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