Conference paper
Surface light-induced changes in thin polymer films
Andrew Skumanich
SPIE Optics Quebec 1993
Assume F = {f1,.∈.∈.,fn} is a family of nonnegative functions of n-1 nonnegative variables such that, for every matrix A of order n, |a ii|>f i (moduli of off-diagonal entries in row i of A) for all i implies A nonsingular. We show that there is a positive vector x, depending only on F, such that for all A=(a ij), and all i, f i ≥ ∑j|a ij|x j/xi. This improves a theorem of Ky Fan, and yields a generalization of a nonsingularity criterion of Gudkov. © Springer 2006.
Andrew Skumanich
SPIE Optics Quebec 1993
Charles A Micchelli
Journal of Approximation Theory
T. Graham, A. Afzali, et al.
Microlithography 2000
Guo-Jun Qi, Charu Aggarwal, et al.
IEEE TPAMI