Alf Van Der Poorten Books

Computational algebra and number theory

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High primes and misdemeanours

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"This volume consists of a selection of papers based on presentations made at the international conference on number theory held in honor of Hugh Williams' sixtieth birthday. The papers address top...

Recurrence sequences

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Computational Algebra and Number Theory

By Wieb Bosma

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Computers have stretched the limits of what is possible in mathematics. More: they have given rise to new fields of mathematical study; the analysis of new and traditional algorithms, the creation...

Neverending Fractions

By Jeffrey Shallit, Wadim Zudilin, Alf Van Der Poorten, Jonathan M. Borwein

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Neverending Fractions

By Jeffrey Shallit, Wadim Zudilin, Alf Van Der Poorten, Jonathan M. Borwein

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Recurrence Sequences

By Graham Everest, Thomas Ward, Alf Van Der Poorten, Igor Shparlinski

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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.