The combinatorially symmetric -matrix completion problem.
Johnson, Charles R., Kroschel, Brenda K. (1996)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Johnson, Charles R., Kroschel, Brenda K. (1996)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Fallat, Shaun M., Johnson, Charles R., Smith, Ronald L. (2000)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Bidard, Christian (2007)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Psarrakos, Panayiotis J. (2002)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Canto, Rafael, Ricarte, Beatriz, Urbano, Ana Maria (2010)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Shaked-Monderer, Naomi (2005)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Lee, Gwang-Yeon, Shader, Bryan L. (1998)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Stuart, Jeffrey L. (1998)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Duanmei Zhou, Guoliang Chen, Jiu Ding (2017)
Open Mathematics
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Let A = PQT, where P and Q are two n × 2 complex matrices of full column rank such that QTP is singular. We solve the quadratic matrix equation AXA = XAX. Together with a previous paper devoted to the case that QTP is nonsingular, we have completely solved the matrix equation with any given matrix A of rank-two.
Zhu, Yan, Zhang, Cheng-Yi, Liu, Jun (2011)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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Raphael Loewy (2012)
Open Mathematics
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Let A be an n×n irreducible nonnegative (elementwise) matrix. Borobia and Moro raised the following question: Suppose that every diagonal of A contains a positive entry. Is A similar to a positive matrix? We give an affirmative answer in the case n = 4.
Werner Gautschi (1954-1956)
Compositio Mathematica
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Uhlig, Frank (1998)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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