A class of optimally conditioned block $2\times2$ matrices
L. Yu. Kolotilina

This publication is cited in the following articles:

1. Kolotilina L.Y., “Bounds for the eigenvalues of block 2x2 Hermitian positive–definite matrices”, Numerical Linear Algebra With Applications, 12:5–6 (2005), 393–417            
2. L. Yu. Kolotilina, “Bounds for the extreme eigenvalues of block $2\times2$ Hermitian matrices”, J. Math. Sci. (N. Y.), 129:2 (2005), 3772–3786        
3. L. Yu. Kolotilina, “On the extreme eigenvalues of block $2\times2$ Hermitian matrices”, J. Math. Sci. (N. Y.), 127:3 (2005), 1969–1975