Paltanea - Approximation Theory Using Positive Linear Operators - New - X555z

Theory of Approximation by N. I. Achieser (1992, Trade Paperback)

Perturbation Theory for Linear Operators by Tosio Kato (Paperback, 1995)

ANALYSIS II: CONVEX ANALYSIS AND APPROXIMATION THEORY By R V Gamkrelidze & David

Introduction to Approximation Theory

Introduction to Approximation Theory by E.W. Cheney (English) Hardcover Book

Linear Operators in Hilbert Spaces - 9781461260295

Entropy, Compactness and the Approximation of Operators by Bernd Carl (English)