Murray H. Protter Books

This book is designed for a first course in real analysis which follows the standard course in elementary calculus. Since many students encounter rigorous mathematical theory for the first time in...

Intermediate Calculus

By Murray H. Protter, Charles B. Jr. Morrey

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Maximum Principles in Differential Equations

By Murray H. Protter, Hans F. Weinberger

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Basic Elements of Real Analysis

By Murray H. Protter

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From the author of the highly acclaimed A First Course in Real Analysis comes a volume designed specifically for a short one-semester course in real analysis. Many students of mathematics and those...

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.