Ole Christensen Books

The theory for frames and bases has developed rapidly in recent years because of its role as a mathematical tool in signal and image processing. In this self-contained work, frames and Riesz bases...

Introduction to Frames and Riesz Bases

By Ole Christensen

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Vindlast pa vindmoller under Stilstand

By Ole Christensen

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Symposium on Production Planning in Glasshouse Floriculture, Nyborg, Denmark, 15 - 19 August 1983

By Symposium On Production Planning In Glasshouse Floriculture 1983 Nyborg Denmark

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Functions, Spaces, and Expansions: Mathematical Tools in Physics and Engineering

By Ole Christensen

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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.