Alex Vilenkin Books

Many Worlds in One

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"This book is an introductory text for all those wishing to learn about modern views of the cosmos. Our universe originated in a great explosion--the big bang. For nearly a century cosmologists hav...

Cosmology for the Curious

By Delia Perlov, Alex Vilenkin

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Kosmische Doppelganger

By N. Fischer, Alex Vilenkin

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Many Worlds in One

By Alex Vilenkin

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Many worlds in one

By A. Vilenkin

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Kosmologie Fur Alle Die Mehr Wissen Wollen

By Delia Perlov

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Cosmology for the Curious

By Delia Perlov, Alex Vilenkin

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Cosmology for the Curious

By Delia Perlov, Alex Vilenkin

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Muchos mundos en uno

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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.