Mathematical Analysis: Approximation and Discrete Processes

A Companion to Analysis: A Second First and First Second Course in Analysis (Graduate Studies in Mathematics)

Cohomological Analysis of Partial Differential Equations and Secondary Calculus (Translations of Mathematical Monographs)

Practical Applied Mathematics: Modelling, Analysis, Approximation: 38 (Cambridge Texts in Applied Mathematics, Series Number 38)

Mathematical Constants and their Approximations