Roger B. Nelsen Books

An Introduction to Copulas

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Copulas are functions that join multivariate distribution functions to their one-dimensional margins. The study of copulas and their role in statistics is a new but vigorously growing field. In thi...

An Introduction to Copulas

By Roger B. Nelsen

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Copulas are functions that join multivariate distribution functions to their one-dimensional margins. In this book, the student or practitioner of statistics and probability will find discussions o...

Charming proofs

By Claudi Alsina

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"Theorems and their proofs lie at the heart of mathematics. In speaking of the purely aesthetic qualities of theorems and proofs, G. H. Hardy wrote that in beautiful proofs 'there is a very high de...

A Mathematical Space Odyssey

By Claudi Alsina, Roger B. Nelsen

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Proofs without Words

By Roger B. Nelsen

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Proofs Without Words II

By Roger B. Nelsen

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The calculus collection

By Caren L. Diefenderfer

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Reader collecting articles from MAA journals between 1977 and 2007, selected for usefulness to high school calculus teachers.

Cameos for Calculus

By Roger B. Nelsen

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Proofs Without Words III

By Roger B. Nelsen

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An Introduction to Copulas

By Roger B. Nelsen

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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.