Julian Havil Books

"Math--the application of reasonable logic to reasonable assumptions--usually produces reasonable results. But sometimes math generates astonishing paradoxes--conclusions that seem completely unrea...

The Irrationals A Story of the Numbers You Can t Count On

By Julian Havil

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John Napier

By Julian Havil

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Verblufft

By Manfred Stern, Julian Havil

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Irrationals

By Andrew Granville, Julian Havil

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Irrationals

By Andrew Granville, Julian Havil

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Curves for the Mathematically Curious

By Julian Havil

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Curves for the Mathematically Curious

By Julian Havil

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Nonplussed

By Julian Havil

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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.