ALBERTO
BOROBIA VIZMANOS
Profesor Titular Universidad
Publications (46) ALBERTO BOROBIA VIZMANOS publications
2023
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On the consistency of the matrix equation X T A X = B when B is skew-symmetric: improving the previous characterization
Linear and Multilinear Algebra
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On the consistency of the matrix equation X⊤AX= B when B is symmetric: the case where CFC(A) includes skew-symmetric blocks
Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales - Serie A: Matematicas, Vol. 117, Núm. 2
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The equation X ⊤ AX=B with B skew-symmetric: how much of a bilinear form is skew-symmetric?
Linear and Multilinear Algebra, Vol. 71, Núm. 13, pp. 2114-2143
2021
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Nonsparse companion hessenberg matrices
Electronic Journal of Linear Algebra, Vol. 37, pp. 193-210
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On the Consistency of the Matrix Equation X⊤AX= B when B is Symmetric
Mediterranean Journal of Mathematics, Vol. 18, Núm. 2
2020
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A phase II, single-center, double-blind, randomized placebo-controlled trial to explore the efficacy and safety of intravenous melatonin in patients with COVID-19 admitted to the intensive care unit (MelCOVID study): A structured summary of a study protocol for a randomized controlled trial
Trials, Vol. 21, Núm. 1
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Clinical trial to test the efficacy of melatonin in COVID-19
Journal of Pineal Research
2019
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The WST-decomposition for partial matrices
Linear Algebra and Its Applications, Vol. 564, pp. 95-125
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Álgebra lineal y geometría vectorial
Sanz y Torres
2017
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ACI-matrices of constant rank over arbitrary fields
Linear Algebra and Its Applications, Vol. 527, pp. 232-259
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Fillmore's theorem for integer matrices
Linear Algebra and Its Applications, Vol. 531, pp. 281-284
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The real nonnegative inverse eigenvalue problem is NP-hard
Linear Algebra and Its Applications, Vol. 522, pp. 127-139
2015
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Matemáticas para ciencias ambientales: álgebra lineal y ecuaciones diferenciales
Sanz y Torres
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Álgebra lineal y geometría vectorial
Sanz y Torres
2014
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A matrix completion problem over integral domains: the case with 2n — 3 prescribed blocks
Proyecciones: Journal of Mathematics, Vol. 33, Núm. 2, pp. 215-233
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A note on matrices with prescribed off-diagonal submatrix and characteristic polynomial
Linear Algebra and Its Applications, Vol. 458, pp. 99-107
2013
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Characterization of full rank ACI-matrices over fields
Linear Algebra and Its Applications, Vol. 439, Núm. 12, pp. 3752-3762
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Inverse Eigenvalue Problems
Handbook of Linear Algebra, Second Edition (CRC Press)
2012
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Matrix completion problems over integral domains: The case with a diagonal of prescribed blocks
Linear Algebra and Its Applications, Vol. 436, Núm. 1, pp. 222-236
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Nonsingular ACI-matrices over integral domains
Linear Algebra and Its Applications, Vol. 436, Núm. 11, pp. 4311-4316