Aad Dijksma Books

Contributions to Operator Theory in Spaces with an Indefinite Metric

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This volume is dedicated to Heinz Langer, a leading expert in spectral analysis and its applications, in particular to operators in spaces with an indefinite metric, on the occasion of his 60th bir...

Schur functions, operator colligations, and reproducing kernel Pontryagin spaces

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Schur Functions Operator Colligations and Reproducing Kernel Pontryagin Spaces

By Aad Dijksma, Daniel Alpay, James Rovnyak, Hendrik De Snoo

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Contributions to Operator Theory in Spaces with an Indefinite Metric

By Aad Dijksma, Marinus A Kaashoek, Israel Gohberg

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Schur Functions Operator Colligations and Reproducing Kernel Pontryagin Spaces

By Aad Dijksma, Daniel Alpay, James Rovnyak

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.