Peter A. Hogan Books

Advanced General Relativity

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Advanced General Relativity: Gravity Waves, Spinning Particles, and Black Holes

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This volume covers mainstream topics at research level involving gravitational waves, spinning particles, and black holes suitable for graduates and early postgraduates exploring avenues into resea...

Advanced General Relativity

By Peter A. Hogan

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Frontiers in General Relativity

By Peter A. Hogan, Dirk Puetzfeld

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Exact Space Time Models of Gravitational Waves

By Peter A. Hogan, Dirk Puetzfeld

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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.