Loewy, Raphael Proof of a conjecture on polynomials preserving nonnegative matrices. (English) Zbl 1525.15013 Linear Algebra Appl. 676, 267-276 (2023). Reviewer: John D. Dixon (Ottawa) MSC: 15A29 15A18 15B48 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 676, 267--276 (2023; Zbl 1525.15013) Full Text: DOI arXiv
Loewy, Raphael; Spector, Oren Some notes on the spectra of nonnegative symmetric \(5\times 5\) matrices. (English) Zbl 1466.15015 Linear Multilinear Algebra 69, No. 7, 1363-1382 (2021). Reviewer: John D. Dixon (Ottawa) MSC: 15A29 15B48 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{O. Spector}, Linear Multilinear Algebra 69, No. 7, 1363--1382 (2021; Zbl 1466.15015) Full Text: DOI
Loewy, Raphael Some additional notes on the spectra of non-negative symmetric \(5 \times 5\) matrices. (English) Zbl 1465.15022 Electron. J. Linear Algebra 37, 1-13 (2021). MSC: 15A29 15A18 15A42 15A45 PDFBibTeX XMLCite \textit{R. Loewy}, Electron. J. Linear Algebra 37, 1--13 (2021; Zbl 1465.15022) Full Text: Link
Loewy, Raphael On the smallest singular value in the class of invertible lower triangular \((0,1)\) matrices. (English) Zbl 1476.15017 Linear Algebra Appl. 608, 203-213 (2021). Reviewer: Jorma K. Merikoski (Tampere) MSC: 15A18 11C20 15A42 15B36 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 608, 203--213 (2021; Zbl 1476.15017) Full Text: DOI
Loewy, Raphael; Spector, Oren A necessary condition for the spectrum of nonnegative symmetric \(5\times 5\) matrices. (English) Zbl 1398.15039 Linear Algebra Appl. 528, 206-272 (2017). MSC: 15B48 15A29 15A18 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{O. Spector}, Linear Algebra Appl. 528, 206--272 (2017; Zbl 1398.15039) Full Text: DOI arXiv
Loewy, Raphael A note on the real nonnegative inverse eigenvalue problem. (English) Zbl 1356.15003 Electron. J. Linear Algebra 31, 765-773 (2016). MSC: 15A18 15A29 15B48 PDFBibTeX XMLCite \textit{R. Loewy}, Electron. J. Linear Algebra 31, 765--773 (2016; Zbl 1356.15003) Full Text: DOI
Laffey, Thomas J.; Loewy, Raphael; Šmigoc, Helena Power series with positive coefficients arising from the characteristic polynomials of positive matrices. (English) Zbl 1345.15011 Math. Ann. 364, No. 1-2, 687-707 (2016). Reviewer: Alexander Kovačec (Coimbra); Frank Uhlig (Auburn) MSC: 15B48 15A29 15A18 30B10 37B10 PDFBibTeX XMLCite \textit{T. J. Laffey} et al., Math. Ann. 364, No. 1--2, 687--707 (2016; Zbl 1345.15011) Full Text: DOI arXiv
Loewy, Raphael On a nonnegative irreducible matrix that is similar to a positive matrix. (English) Zbl 1246.15033 Cent. Eur. J. Math. 10, No. 1, 303-311 (2012). Reviewer: Igor Klep (Auckland) MSC: 15B48 15A21 PDFBibTeX XMLCite \textit{R. Loewy}, Cent. Eur. J. Math. 10, No. 1, 303--311 (2012; Zbl 1246.15033) Full Text: DOI
Friedland, Shmuel; Loewy, Raphael On the minimum rank of a graph over finite fields. (English) Zbl 1241.05078 Linear Algebra Appl. 436, No. 6, 1710-1720 (2012). MSC: 05C50 15A03 11T99 PDFBibTeX XMLCite \textit{S. Friedland} and \textit{R. Loewy}, Linear Algebra Appl. 436, No. 6, 1710--1720 (2012; Zbl 1241.05078) Full Text: DOI arXiv
Laffey, Thomas J.; Loewy, Raphael; Šmigoc, Helena Nonnegative matrices that are similar to positive matrices. (English) Zbl 1190.15036 SIAM J. Matrix Anal. Appl. 31, No. 2, 629-649 (2009). Reviewer: Grozio Stanilov (Sofia) MSC: 15B48 15A04 PDFBibTeX XMLCite \textit{T. J. Laffey} et al., SIAM J. Matrix Anal. Appl. 31, No. 2, 629--649 (2009; Zbl 1190.15036) Full Text: DOI
Johnson, Charles R.; Loewy, Raphael; Smith, Paul Anthony The graphs for which the maximum multiplicity of an eigenvalue is two. (English) Zbl 1225.05167 Linear Multilinear Algebra 57, No. 7, 713-736 (2009). MSC: 05C50 15A18 15B57 PDFBibTeX XMLCite \textit{C. R. Johnson} et al., Linear Multilinear Algebra 57, No. 7, 713--736 (2009; Zbl 1225.05167) Full Text: DOI arXiv
Barrett, Wayne; Hall, H. Tracy; Loewy, Raphael The inverse inertia problem for graphs: Cut vertices, trees, and a counterexample. (English) Zbl 1175.05032 Linear Algebra Appl. 431, No. 8, 1147-1191 (2009). MSC: 05C05 05C50 15A03 15B57 PDFBibTeX XMLCite \textit{W. Barrett} et al., Linear Algebra Appl. 431, No. 8, 1147--1191 (2009; Zbl 1175.05032) Full Text: DOI
Loewy, Raphael; Mehrmann, Volker A note on Potter’s theorem for quasi-commutative matrices. (English) Zbl 1177.15019 Linear Algebra Appl. 430, No. 7, 1812-1825 (2009). Reviewer: A. Arvanitoyeorgos (Patras) MSC: 15A27 15A24 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{V. Mehrmann}, Linear Algebra Appl. 430, No. 7, 1812--1825 (2009; Zbl 1177.15019) Full Text: DOI
Barrett, Wayne; Grout, Jason; Loewy, Raphael The minimum rank problem over the finite field of order 2: Minimum rank 3. (English) Zbl 1194.05080 Linear Algebra Appl. 430, No. 4, 890-923 (2009). MSC: 05C50 05C75 15A03 PDFBibTeX XMLCite \textit{W. Barrett} et al., Linear Algebra Appl. 430, No. 4, 890--923 (2009; Zbl 1194.05080) Full Text: DOI arXiv
Barrett, Wayne; Hall, H. Tracy; Loewy, Raphael The inverse inertia problem for graphs. arXiv:0711.3049 Preprint, arXiv:0711.3049 [math.CO] (2007). MSC: 05C05 05C50 15A03 15A57 BibTeX Cite \textit{W. Barrett} et al., ``The inverse inertia problem for graphs'', Preprint, arXiv:0711.3049 [math.CO] (2007) Full Text: arXiv
Barrett, Wayne; van der Holst, Hein; Loewy, Raphael Graphs whose minimal rank is two: the finite fields case. (English) Zbl 1102.05037 Electron. J. Linear Algebra 14, 32-42 (2005). Reviewer: Bert Randerath (Köln) MSC: 05C50 05C75 15A03 15B57 PDFBibTeX XMLCite \textit{W. Barrett} et al., Electron. J. Linear Algebra 14, 32--42 (2005; Zbl 1102.05037) Full Text: DOI EuDML EMIS Link
Hong, Shaofang; Loewy, Raphael Asymptotic behavior of eigenvalues of greatest common divisor matrices. (English) Zbl 1083.11021 Glasg. Math. J. 46, No. 3, 551-569 (2004). Reviewer: Pentti Haukkanen (Tampere) MSC: 11C20 15A18 15B36 PDFBibTeX XMLCite \textit{S. Hong} and \textit{R. Loewy}, Glasg. Math. J. 46, No. 3, 551--569 (2004; Zbl 1083.11021) Full Text: DOI
Barrett, Wayne; van der Holst, Hein; Loewy, Raphael Graphs whose minimal rank is two. (English) Zbl 1070.05059 Electron. J. Linear Algebra 11, 258-280 (2004). Reviewer: Heinz-Joachim Presia (Ilmenau) MSC: 05C50 05C75 15A03 15B57 PDFBibTeX XMLCite \textit{W. Barrett} et al., Electron. J. Linear Algebra 11, 258--280 (2004; Zbl 1070.05059) Full Text: DOI EuDML EMIS Link
Loewy, R.; McDonald, J. J. The symmetric nonnegative inverse eigenvalue problem for \(5 \times 5\) matrices. (English) Zbl 1066.15007 Linear Algebra Appl. 393, 275-298 (2004). Reviewer: Carlos Martins de Fonseca (Coimbra) MSC: 15A18 15A29 15B48 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{J. J. McDonald}, Linear Algebra Appl. 393, 275--298 (2004; Zbl 1066.15007) Full Text: DOI
Loewy, Raphael; Mehrmann, Volker A note on the symmetric recursive inverse eigenvalue problem. (English) Zbl 1062.15010 SIAM J. Matrix Anal. Appl. 25, No. 1, 180-187 (2003). MSC: 15A29 15A18 15B48 15B57 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{V. Mehrmann}, SIAM J. Matrix Anal. Appl. 25, No. 1, 180--187 (2003; Zbl 1062.15010) Full Text: DOI
Loewy, Raphael; Tam, Bit-Shun CP rank of completely positive matrices of order 5. (English) Zbl 1019.15009 Linear Algebra Appl. 363, 161-176 (2003). Reviewer: J.Zemánek (Warszawa) MSC: 15B48 15A23 15A03 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{B.-S. Tam}, Linear Algebra Appl. 363, 161--176 (2003; Zbl 1019.15009) Full Text: DOI
Falikman, Dmitry; Friedland, Shmuel; Loewy, Raphael On spaces of matrices containing a nonzero matrix of bounded rank. (English) Zbl 1050.15018 Pac. J. Math. 207, No. 1, 157-176 (2002). MSC: 15A30 15A03 PDFBibTeX XMLCite \textit{D. Falikman} et al., Pac. J. Math. 207, No. 1, 157--176 (2002; Zbl 1050.15018) Full Text: DOI
Loewy, Raphael Large spaces of symmetric matrices of bounded rank are decomposable. (English) Zbl 0989.15006 Linear Multilinear Algebra 48, No. 4, 355-382 (2001). Reviewer: G.E.Wall (Sydney) MSC: 15A30 15A03 15B57 05C70 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Multilinear Algebra 48, No. 4, 355--382 (2001; Zbl 0989.15006) Full Text: DOI
Barrett, Wayne; Hall, H. Tracy; Loewy, Raphael The cone of class function inequalities for the \(4\)-by-\(4\) positive semidefinite matrices. (English) Zbl 1024.15008 Proc. Lond. Math. Soc., III. Ser. 79, No. 1, 107-130 (1999). MSC: 15B48 15A15 15A45 PDFBibTeX XMLCite \textit{W. Barrett} et al., Proc. Lond. Math. Soc. (3) 79, No. 1, 107--130 (1999; Zbl 1024.15008) Full Text: DOI
Barrett, Wayne; Hall, H. Tracy; Loewy, Raphael A nonpolyhedral cone of class function inequalities for positive semidefinite matrices. (English) Zbl 0959.15025 Linear Algebra Appl. 302-303, 535-553 (1999). Reviewer: Ali-Akbar Jafarian (West Haven) MSC: 15B48 15A45 15A15 PDFBibTeX XMLCite \textit{W. Barrett} et al., Linear Algebra Appl. 302--303, 535--553 (1999; Zbl 0959.15025) Full Text: DOI
Friedland, S.; Loewy, R. Spaces of symmetric matrices containing a nonzero matrix of bounded rank. (English) Zbl 0939.15009 Linear Algebra Appl. 287, No. 1-3, 161-170 (1999). Reviewer: Chen Zhijie (Shanghai) MSC: 15A30 15A03 PDFBibTeX XMLCite \textit{S. Friedland} and \textit{R. Loewy}, Linear Algebra Appl. 287, No. 1--3, 161--170 (1999; Zbl 0939.15009) Full Text: DOI
Loewy, Raphael; Radwan, Nizar On spaces of matrices with a bounded number of eigenvalues. (English) Zbl 0913.15001 Electron. J. Linear Algebra 3, 142-152 (1998). Reviewer: S.E.Payne (Denver) MSC: 15A03 15A18 15A30 15A42 15A45 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{N. Radwan}, Electron. J. Linear Algebra 3, 142--152 (1998; Zbl 0913.15001) Full Text: DOI EuDML EMIS Link
Beasley, LeRoy B.; Loewy, Raphael Rank preservers on spaces of symmetric matrices. (English) Zbl 0890.15002 Linear Multilinear Algebra 43, No. 1-3, 63-86 (1997). Reviewer: A.K.Lal (Kanpur) MSC: 15A04 15B57 PDFBibTeX XMLCite \textit{L. B. Beasley} and \textit{R. Loewy}, Linear Multilinear Algebra 43, No. 1--3, 63--86 (1997; Zbl 0890.15002) Full Text: DOI
Loewy, R. An inertia theorem for Lyapunov’s equation and the dimension of a controllability space. (English) Zbl 0894.93018 Linear Algebra Appl. 260, 1-7 (1997). Reviewer: L.Rodman (Williamsburg) MSC: 93B60 15A24 93B05 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 260, 1--7 (1997; Zbl 0894.93018) Full Text: DOI
Johnson, Charles R.; Laffey, Thomas J.; Loewy, Raphael The real and the symmetric nonnegative inverse eigenvalue problems are different. (English) Zbl 0861.15007 Proc. Am. Math. Soc. 124, No. 12, 3647-3651 (1996). MSC: 15A18 15B48 PDFBibTeX XMLCite \textit{C. R. Johnson} et al., Proc. Am. Math. Soc. 124, No. 12, 3647--3651 (1996; Zbl 0861.15007) Full Text: DOI
Johnson, Charles R.; Loewy, Raphael; Olesky, D. D.; van den Driesche, P. Maximizing the spectral radius of fixed trace diagonal perturbations of nonnegative matrices. (English) Zbl 0859.15004 Linear Algebra Appl. 241-243, 635-654 (1996). Reviewer: J.Szilasi (Debrecen) MSC: 15A42 15B48 PDFBibTeX XMLCite \textit{C. R. Johnson} et al., Linear Algebra Appl. 241--243, 635--654 (1996; Zbl 0859.15004) Full Text: DOI Link
Loewy, Raphael; Pierce, Stephen Linear preservers of balanced nonsingular inertia classes. (English) Zbl 0833.15001 Linear Algebra Appl. 223-224, 483-499 (1995). Reviewer: Z.Dostál (Ostrava) MSC: 15A04 15A42 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{S. Pierce}, Linear Algebra Appl. 223--224, 483--499 (1995; Zbl 0833.15001) Full Text: DOI
Loewy, Raphael; Pierce, Stephen Linear preservers of balanced singular inertia classes. (English) Zbl 0805.15011 Linear Algebra Appl. 201, 61-77 (1994). Reviewer: K.Burian (Havířov) MSC: 15A42 15A04 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{S. Pierce}, Linear Algebra Appl. 201, 61--77 (1994; Zbl 0805.15011) Full Text: DOI
Loewy, Raphael; Radwan, Nizar Spaces of symmetric matrices of bounded rank. (English) Zbl 0801.15011 Linear Algebra Appl. 197-198, 189-215 (1994). Reviewer: N.Backhouse (Liverpool) MSC: 15A30 15A03 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{N. Radwan}, Linear Algebra Appl. 197--198, 189--215 (1994; Zbl 0801.15011) Full Text: DOI
Loewy, Raphael Linear mappings which are rank-\(k\) nonincreasing. II. (English) Zbl 0808.15004 Linear Multilinear Algebra 36, No. 2, 115-123 (1993). Reviewer: H.-J.Kowalsky (Braunschweig) MSC: 15A04 15A03 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Multilinear Algebra 36, No. 2, 115--123 (1993; Zbl 0808.15004) Full Text: DOI
Loewy, Raphael Linear mappings which are rank-\(k\) nonincreasing. (English) Zbl 0801.15002 Linear Multilinear Algebra 34, No. 1, 21-32 (1993). Reviewer: H.-J.Kowalsky (Braunschweig) MSC: 15A04 15A03 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Multilinear Algebra 34, No. 1, 21--32 (1993; Zbl 0801.15002) Full Text: DOI
Barrett, Wayne; Johnson, Charles R.; Loewy, Raphael; Shalom, Tamir Rank incrementation via diagonal perturbations. (English) Zbl 0837.15002 Brualdi, Richard A. (ed.) et al., Combinatorial and graph-theoretical problems in linear algebra. Proceedings of a workshop that was an integral part of the 1991-92 IMA program on “Applied Linear Algebra” held at the University of Minnesota, USA, November 11-15, 1991. New York: Springer-Verlag. IMA Vol. Math. Appl. 50, 181-187 (1993). Reviewer: P.M.Gibson (Huntsville) MSC: 15A03 PDFBibTeX XMLCite \textit{W. Barrett} et al., IMA Vol. Math. Appl. 50, 181--187 (1993; Zbl 0837.15002)
Baruch, Ehud Moshe; Loewy, Raphael Linear preservers on spaces of Hermitian or real symmetric matrices. (English) Zbl 0776.15007 Linear Algebra Appl. 183, 89-102 (1993). Reviewer: R.Covaci (Cluj-Napoca) MSC: 15A30 15B57 PDFBibTeX XMLCite \textit{E. M. Baruch} and \textit{R. Loewy}, Linear Algebra Appl. 183, 89--102 (1993; Zbl 0776.15007) Full Text: DOI
Hartwig, Robert E.; Loewy, Raphael Maximal elements under the three partial orders. (English) Zbl 0767.15017 Linear Algebra Appl. 175, 39-61 (1992). Reviewer: J.M.Day (San José) MSC: 15A60 15A45 06F25 47L07 46A40 PDFBibTeX XMLCite \textit{R. E. Hartwig} and \textit{R. Loewy}, Linear Algebra Appl. 175, 39--61 (1992; Zbl 0767.15017) Full Text: DOI
Grone, Robert; Loewy, Raphael; Pierce, Stephen Nonchordal positive semidefinite stochastic matrices. (English) Zbl 0754.15019 Linear Multilinear Algebra 32, No. 2, 107-113 (1992). Reviewer: R.Sinkhorn (Houston) MSC: 15B51 15A60 46A55 PDFBibTeX XMLCite \textit{R. Grone} et al., Linear Multilinear Algebra 32, No. 2, 107--113 (1992; Zbl 0754.15019) Full Text: DOI
Loewy, Raphael Inertia preservers. (English) Zbl 0766.15014 Linear Multilinear Algebra 33, No. 1-2, 23-30 (1992). Reviewer: H.Grassmann (Berlin) MSC: 15A30 15A18 16S50 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Multilinear Algebra 33, No. 1--2, 23--30 (1992; Zbl 0766.15014) Full Text: DOI
Loewy, R.; Shier, D. R.; Johnson, C. R. Perron eigenvectors and the symmetric transportation polytope. (English) Zbl 0762.15011 Linear Algebra Appl. 150, 139-155 (1991). Reviewer: V.Pták MSC: 15B48 15A18 52B11 52B12 PDFBibTeX XMLCite \textit{R. Loewy} et al., Linear Algebra Appl. 150, 139--155 (1991; Zbl 0762.15011) Full Text: DOI
Johnson, Charles R.; Loewy, Raphael Possible inertias for the Hermitian part of \(A+BX\). (English) Zbl 0725.15008 Linear Multilinear Algebra 28(1990), No. 4, 225-227 (1991). Reviewer: Min-Yen Wu (Boulder) MSC: 15A18 93D05 15B51 15A63 PDFBibTeX XMLCite \textit{C. R. Johnson} and \textit{R. Loewy}, Linear Multilinear Algebra 28, No. 4, 225--227 (1991; Zbl 0725.15008) Full Text: DOI
Loewy, Raphael Linear maps which preserve a balanced nonsingular inertia class. (English) Zbl 0706.15025 Linear Algebra Appl. 134, 165-179 (1990). Reviewer: L.Rodman MSC: 15B57 15A18 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 134, 165--179 (1990; Zbl 0706.15025) Full Text: DOI
Laffey, Thomas J.; Loewy, Raphael Linear transformations which do not increase rank. (English) Zbl 0697.15004 Linear Multilinear Algebra 26, No. 3, 181-186 (1990). Reviewer: R.Ursianu MSC: 15A04 15A30 15A03 PDFBibTeX XMLCite \textit{T. J. Laffey} and \textit{R. Loewy}, Linear Multilinear Algebra 26, No. 3, 181--186 (1990; Zbl 0697.15004) Full Text: DOI
Loewy, Raphael Linear maps that preserve an inertia class. (English) Zbl 0697.15003 SIAM J. Matrix Anal. Appl. 11, No. 1, 107-112 (1990). Reviewer: G.P.Barker MSC: 15A04 15B57 15A30 PDFBibTeX XMLCite \textit{R. Loewy}, SIAM J. Matrix Anal. Appl. 11, No. 1, 107--112 (1990; Zbl 0697.15003) Full Text: DOI
Loewy, Raphael On faces generated by certain positive linear transformations. (English) Zbl 0679.15016 Linear Algebra Appl. 118, 95-106 (1989). Reviewer: T.B.Andersen MSC: 15A30 15A60 15A04 47L07 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 118, 95--106 (1989; Zbl 0679.15016) Full Text: DOI
Loewy, Raphael Linear transformations which preserve or decrease rank. (English) Zbl 0678.15001 Linear Algebra Appl. 121, 151-161 (1989). Reviewer: H.-J.Kowalsky MSC: 15A04 15A03 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 121, 151--161 (1989; Zbl 0678.15001) Full Text: DOI
Loewy, Raphael Dimension of faces generated by certain positive linear operators. (English) Zbl 0658.15011 Linear Algebra Appl. 105, 199-207 (1988). Reviewer: A.A.Jafarian MSC: 15A30 15B48 15A45 06F20 15A03 15A04 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 105, 199--207 (1988; Zbl 0658.15011) Full Text: DOI
Loewy, R. On determinants of nonprincipal submatrices of Hermitian matrices. (English) Zbl 0629.15002 Linear Multilinear Algebra 20, 219-228 (1987). Reviewer: P.Rudra MSC: 15A15 15A45 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Multilinear Algebra 20, 219--228 (1987; Zbl 0629.15002) Full Text: DOI
Loewy, Raphael Diagonal similarity of matrices. (English) Zbl 0599.15004 Port. Math. 43(1985/86), 55-59 (1986). Reviewer: A.Mandel MSC: 15A21 05B35 05C50 PDFBibTeX XMLCite \textit{R. Loewy}, Port. Math. 43, 55--59 (1986; Zbl 0599.15004) Full Text: EuDML
Loewy, Raphael Principal minors and diagonal similarity of matrices. (English) Zbl 0591.15005 Linear Algebra Appl. 78, 23-64 (1986). Reviewer: M.Voicu MSC: 15A21 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 78, 23--64 (1986; Zbl 0591.15005) Full Text: DOI
Loewy, Raphael Two matrices which have equal corresponding principal minors. (English) Zbl 0578.15005 Linear algebra and its role in systems theory, Proc. AMS-IMS-SIAM Conf., Brunswick/Maine 1984, Contemp. Math. 47, 299-301 (1985). Reviewer: P.Metzger MSC: 15A21 15A15 PDFBibTeX XML
Carlson, David; Loewy, Raphael On equality of maps induced by tensor and symmetric products. (English) Zbl 0561.15013 Linear Multilinear Algebra 17, 87-100 (1985). Reviewer: V.L.Popov MSC: 15A72 15A03 PDFBibTeX XMLCite \textit{D. Carlson} and \textit{R. Loewy}, Linear Multilinear Algebra 17, 87--100 (1985; Zbl 0561.15013) Full Text: DOI
Hartfiel, D. J.; Loewy, Raphael A determinantal version of the Frobenius-König theorem. (English) Zbl 0551.15002 Linear Multilinear Algebra 16, 155-166 (1984). Reviewer: W.Wiȩsław MSC: 15A21 15A15 15B33 PDFBibTeX XMLCite \textit{D. J. Hartfiel} and \textit{R. Loewy}, Linear Multilinear Algebra 16, 155--166 (1984; Zbl 0551.15002) Full Text: DOI
Hartfiel, D. J.; Loewy, R. On matrices having equal corresponding principal minors. (English) Zbl 0541.15005 Linear Algebra Appl. 58, 147-167 (1984). Reviewer: Yueh-er Kuo MSC: 15A21 PDFBibTeX XMLCite \textit{D. J. Hartfiel} and \textit{R. Loewy}, Linear Algebra Appl. 58, 147--167 (1984; Zbl 0541.15005) Full Text: DOI
Loewy, R. Determinants of nonprincipal submatrices of positive semidefinite matrices. (English) Zbl 0523.15009 Linear Algebra Appl. 56, 1-16 (1984). MSC: 15A15 15B57 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 56, 1--16 (1984; Zbl 0523.15009) Full Text: DOI
Ballantine, C. S.; Loewy, R. Self-duality results for unitary and hermitian matrices. (English) Zbl 0516.15023 Linear Multilinear Algebra 13, 221-230 (1983). MSC: 15B57 15A18 15A15 PDFBibTeX XMLCite \textit{C. S. Ballantine} and \textit{R. Loewy}, Linear Multilinear Algebra 13, 221--230 (1983; Zbl 0516.15023) Full Text: DOI
Loewy, Raphael Determinants of nonprincipal submatrices of normal matrices. (English) Zbl 0516.15022 Linear Algebra Appl. 52-53, 497-507 (1983). MSC: 15B57 15A15 15A42 15A45 15A18 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 52--53, 497--507 (1983; Zbl 0516.15022) Full Text: DOI
Carlson, David; Loewy, Raphael On equality of maps induced by alternate products. (English) Zbl 0491.15003 Linear Algebra Appl. 47, 89-100 (1982). MSC: 15A69 PDFBibTeX XMLCite \textit{D. Carlson} and \textit{R. Loewy}, Linear Algebra Appl. 47, 89--100 (1982; Zbl 0491.15003) Full Text: DOI
Carlson, David; Loewy, Raphael Induced bilinear maps and matrix equations. (English) Zbl 0444.15013 Linear Multilinear Algebra 9, 17-33 (1980). MSC: 15A69 15A24 PDFBibTeX XMLCite \textit{D. Carlson} and \textit{R. Loewy}, Linear Multilinear Algebra 9, 17--33 (1980; Zbl 0444.15013) Full Text: DOI
Loewy, Raphael Quadratic forms on completely symmetric spaces. (English) Zbl 0431.15021 Linear Algebra Appl. 29, 211-216 (1980). MSC: 15A72 15A15 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 29, 211--216 (1980; Zbl 0431.15021) Full Text: DOI
Loewy, R. Extreme points of a convex subset of the cone of positive semidefinite matrices. (English) Zbl 0426.46008 Math. Ann. 253, 227-232 (1980). MSC: 46A55 46A50 15B57 15A30 PDFBibTeX XMLCite \textit{R. Loewy}, Math. Ann. 253, 227--232 (1980; Zbl 0426.46008) Full Text: DOI EuDML
Avraham, Sara; Loewy, Raphael On the inertia of the Lyapunov transform \(AH\) + \(HA^*\) for \(H>O\). (English) Zbl 0388.15009 Linear Multilinear Algebra 6, 1-21 (1978). MSC: 15A18 15A24 PDFBibTeX XMLCite \textit{S. Avraham} and \textit{R. Loewy}, Linear Multilinear Algebra 6, 1--21 (1978; Zbl 0388.15009) Full Text: DOI
Loewy, Raphael; London, David A note on an inverse problem for nonnegative matrices. (English) Zbl 0376.15006 Linear Multilinear Algebra 6, 83-90 (1978). MSC: 15A18 PDFBibTeX XMLCite \textit{R. Loewy} and \textit{D. London}, Linear Multilinear Algebra 6, 83--90 (1978; Zbl 0376.15006) Full Text: DOI
Friedland, S.; Loewy, R. Subspaces of symmetric matrices containing matrices with a multiple first eigenvalue. (English) Zbl 0355.15003 Pac. J. Math. 62, 389-399 (1976). MSC: 15A03 15B48 15B57 15A18 PDFBibTeX XMLCite \textit{S. Friedland} and \textit{R. Loewy}, Pac. J. Math. 62, 389--399 (1976; Zbl 0355.15003) Full Text: DOI
Loewy, Raphael On ranges of real Lyapunov transformations. (English) Zbl 0337.15013 Linear Algebra Appl. 13, 79-89 (1976). MSC: 15A24 15A30 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 13, 79--89 (1976; Zbl 0337.15013) Full Text: DOI
Loewy, Raphael On ranges of Lyapunov transformations. IV. (English) Zbl 0337.15012 Glasg. Math. J. 17, 112-118 (1976). MSC: 15A24 15A30 15B57 PDFBibTeX XMLCite \textit{R. Loewy}, Glasg. Math. J. 17, 112--118 (1976; Zbl 0337.15012) Full Text: DOI
Loewy, Raphael On ranges of Lyapunov transformations. III. (English) Zbl 0337.15011 SIAM J. appl. Math. 30, 687-702 (1976). MSC: 15A24 15A30 15B57 PDFBibTeX XMLCite \textit{R. Loewy}, SIAM J. Appl. Math. 30, 687--702 (1976; Zbl 0337.15011) Full Text: DOI
Loewy, Raphael On ranges of Lyapunov transformations. II. (English) Zbl 0296.15008 Linear Multilinear Algebra 2, 227-237 (1974). MSC: 15A24 15A42 15B57 PDFBibTeX XML Full Text: DOI
Carlson, David; Loewy, Raphael On ranges of Lyapunov transformations. (English) Zbl 0284.15013 Linear Algebra Appl. 8, 237-248 (1974). MSC: 15A24 15A42 15B57 PDFBibTeX XMLCite \textit{D. Carlson} and \textit{R. Loewy}, Linear Algebra Appl. 8, 237--248 (1974; Zbl 0284.15013) Full Text: DOI
Loewy, Raphael The minimal eigenvalue of the Lyapunov transform. (English) Zbl 0276.15023 Linear Multilinear Algebra 1, 213-229 (1973). MSC: 15A42 93D05 PDFBibTeX XML Full Text: DOI
Loewy, R. On a theorem about the location of eigenvalues of matrices. (English) Zbl 0219.15007 Linear Algebra Appl. 4, 233-242 (1971). MSC: 15A18 PDFBibTeX XMLCite \textit{R. Loewy}, Linear Algebra Appl. 4, 233--242 (1971; Zbl 0219.15007) Full Text: DOI
Loewy, Raphael Gerschgorin-type theorems for partitioned matrices. (English) Zbl 0205.32902 SIAM J. Numer. Anal. 7, 125-128 (1970). MSC: 15A18 PDFBibTeX XMLCite \textit{R. Loewy}, SIAM J. Numer. Anal. 7, 125--128 (1970; Zbl 0205.32902) Full Text: DOI