John C. Stillwell Books

Elements of number theory

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This book is a concise introduction to number theory and some related algebra, with an emphasis on solving equations in integers. Finding integer solutions led to two fundamental ideas of number th...

The Four Pillars of Geometry Undergraduate Texts in Mathematics

By John C. Stillwell

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The Four Pillars of Geometry

By John C. Stillwell

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Naive Lie Theory

By John C. Stillwell

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Elements of Number Theory

By John C. Stillwell

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Geometry of Surfaces

By John C. Stillwell

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Migration Processes and Patterns

By Philip Rees, John C. Stillwell

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Migration Models

By John C. Stillwell

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Elements of Mathematics

By John C. Stillwell

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Elements of Mathematics

By John C. Stillwell

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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.