Charles R. Johnson - researchr alias

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2011

The change in multiplicity of an eigenvalue of a Hermitian matrix associated with the removal of an edge from its graphCharles R. Johnson, Paul R. McMichael. DM, 311(2-3):166-170, 2011. [doi]

2010

Eigenvalue assignments and the two largest multiplicities in a Hermitian matrix whose graph is a treeCharles R. Johnson, Christopher Jordan-Squire, David A. Sher. DAM, 158(6):681-691, 2010. [doi]

2009

Parametrization of the Matrix Symplectic Group and ApplicationsFroilán M. Dopico, Charles R. Johnson. siammax, 31(2):650-673, 2009. [doi]

2008

On the Minimum Rank Among Positive Semidefinite Matrices with a Given GraphMatthew Booth, Philip Hackney, Benjamin Harris, Charles R. Johnson, Margaret Lay, Lon H. Mitchell, Sivaram K. Narayan, Amanda Pascoe, Kelly Steinmetz, Brian D. Sutton, Wendy Wang. siammax, 30(2):731-740, 2008. [doi]

The extent to which triangular sub-patterns explain minimum rankCharles R. Johnson, Joshua A. Link. DAM, 156(10):1637-1651, 2008. [doi]

2007

Path Product Matrices and Eventually Inverse M-matricesCharles R. Johnson, Ronald L. Smith. siammax, 29(2):370-376, 2007. [doi]

2006

The number of equivalence classes of symmetric sign patternsPeter J. Cameron, Charles R. Johnson. DM, 306(23):3074-3077, 2006. [doi]

Compressions of Totally Positive MatricesShaun M. Fallat, Allen Herman, Michael I. Gekhtman, Charles R. Johnson. siammax, 28(1):68-80, 2006. [doi]

Perturbation of Matrices Diagonalizable under CongruenceSusana Furtado, Charles R. Johnson. siammax, 28(1):81-88, 2006. [doi]

The trees for which maximum multiplicity implies the simplicity of other eigenvaluesCharles R. Johnson, Carlos M. Saiago. DM, 306(23):3130-3135, 2006. [doi]

2004

Hermitian Matrices, Eigenvalue Multiplicities, and Eigenvector ComponentsCharles R. Johnson, Brian D. Sutton. siammax, 26(2):390-399, 2004. [doi]

2003

Erratum: Successively Ordered Elementary Bidiagonal FactorizationCharles R. Johnson, D. D. Olesky, Pauline van den Driessche. siammax, 25(3):900, 2003. [doi]

The Parter-Wiener Theorem: Refinement and GeneralizationCharles R. Johnson, António Leal Duarte, Carlos M. Saiago. siammax, 25(2):352-361, 2003. [doi]

2002

Intervals of Inverse M-MatricesCharles R. Johnson, Ronald L. Smith. rc, 8(3):239-243, 2002. [doi]

2001

Deterministic inverse zero-patternsCharles R. Johnson, Michael Lundquist, Thomas J. Lundy, John S. Maybee. DAM, 113(2-3):211-236, 2001.

1996

Structural conditions for cycle completable graphsCharles R. Johnson, Terry A. McKee. DM, 159(1-3):155-160, 1996. [doi]

1994

Topics in matrix analysisRoger A. Horn, Charles R. Johnson. Cambridge University Press, 1994.

1993

Determinantal inequalities for positive definite matricesCharles R. Johnson, Wayne W. Barrett. DM, 119(1-3):97-106, 1993. [doi]

1990

Matrix analysisRoger A. Horn, Charles R. Johnson. Cambridge University Press, 1990.

1980

A note on cospectral graphsCharles R. Johnson, Morris Newman. JCT, 28(1):96-103, 1980. [doi]