Gerd Baumann Books

"Symmetry Analysis of Differential Equations with Mathematica provides a comprehensive introduction to the application of symmetry analysis to differential equations. The application of symmetries...

The multicultural riddle

By Baumann Gerd.

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The Multicultural Riddle: Rethinking National, Ethnic and Religious Identities

By Gerd Baumann

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A Riddle is a paradox that can be solved by rethinking the terms in which it is posed. Multiculturalism, too, is a riddle. It asks how we can establish a state of justice and equality between and a...

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.