The current form of modern approximation theory is shaped by many new de velopments which are the subject of this series of conferences. The International Meeti

In the last 30 years, Approximation Theory has undergone wonderful develop ment, with many new theories appearing in this short interval. This book has its orig

Coupled with its sequel, this book gives a connected, unified exposition of Approximation Theory for functions of one real variable. It describes spaces of func

In the last 30 years, Approximation Theory has undergone wonderful develop ment, with many new theories appearing in this short interval. This book has its orig

Many phenomena of interest for applications are represented by differential equations which are defined in a domain whose boundary is a priori unknown, and is a