Karel Najzar Books

Partial Differential Equations

By Willi Jager, J. Necas, Karel Najzar, Jana Stara, Oldrich John

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"As a satellite conference of the 1998 International Mathematical Congress and part of the celebration of the 650th anniversary of Charles University, the Partial Differential Equations Theory and...

Numerical Mathematics and Advanced Applications

By European Conference On Numerical Mathematics, ENUMATH 2003 2003 Prague Czech Republic

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Numerical Mathematics and Advanced Applications

By Peter Knobloch, Vit Dolejsi, Karel Najzar, Miloslav Feistauer

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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.