Selected Publications
- Technical Summary Report #1346, Mathematics Research Center, University of Wisconsin-Madison; J. Math. Anal. Appl. 49(1975), 375-392.
- Friedland and R. Loewy, Subspaces of symmetric matrices with a multiple first eigenvalue, Pacific J. of Math. 62(1976), 389-399.
- Loewy and D. London, A note on an inverse problem for nonnegative matrices, Linear and Multilinear Algebra 6(1978), 83-90.
- Loewy, Extreme points of a convex subset of the cone of positive semidefinite matrices, Math. Ann. 253(1980), 227-232.
- Loewy, Principal minors and diagonal similarity of matrices, Linear Algebra and Appl. 78(1986), 23-64.
- Loewy, Linear maps which preserve a balanced nonsingular inertia class, Linear Algebra and Appl. 134(1990), 165-179.
- Loewy and S. Pierce, Linear preservers of balanced nonsingular inertia classes, Linear Algebra and Appl. 223/224(1995), 483-499.
- Barrett, C.R. Johnson and R. Loewy, The real positive definite completion problem: Cycle completability, Memoirs of the AMS. 584(1996), 71pp.
- R. Johnson, T.J. Laffey and R. Loewy, The real and the symmetric nonnegative inverse eigenvalue problems are different, Proc. of the AMS 124(1996), 3647-3651.
- B. Beasley and R. Loewy, Rank preservers on spaces of symmetric matrices, Linear and Multilinear Algebra 43(1997), 63-86.
- Barrett, H.T. Hall and R. Loewy, The cone of class function inequalities for the 4-by-4 positive semidefinite matrices, Proc. of the LMS 79(1999), 107-130.
- Barrett, H.T. Hall and R. Loewy, A nonpolyhedral cone of class function inequalities for positive semidefinite matrices, Linear Algebra and Appl. 302-303(1999), 535-553.
- Falikman, S. Friedland and R. Loewy, On spaces of matrices containing a nonzero matrix of bounded rank, Pacific J. of Math. 207(2002), 157-176.