John E. McCarthy Books

Transition to Higher Mathematics: Structure and Proof

By Bob A. Dumas, John E. McCarthy

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Holomorphic Spaces

By John E. McCarthy, Sheldon Axler, Donald Sarason

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Pick interpolation and Hilbert function spaces

By Jim Agler

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Off the cuff over the collar

By John E. McCarthy

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Bishop John McCarthy's book, Off the Cuff & Over the Collar: Common Sense Catholicism is an enticing concoction of Tuesdays with Morrie blended with Catholicism 101, topped with an added twist of I...

Holomorphic Spaces

By John E. McCarthy, Sheldon Jay Axler, Donald Sarason

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Pick Interpolation and Hilbert Function Spaces

By John E. McCarthy, Jim Agler

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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.