Arild Stubhaug Books

Sophus Lie. Une pensee audacieuse

By Arild Stubhaug

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Niels Henrik Abel et son epoque

By Arild Stubhaug

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The Mathematician Sophus Lie

By Arild Stubhaug

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Sophus Lie (1842-1899) is without doubt one of Norway's greatest scientific talents. His mathematical works have made him famous around the world no less than Niels Henrik Abel. The terms Lie group...

Niels Henrik Abel and his Times

By Arild Stubhaug

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Read about the dramatic life of an outstanding mathematical genius: Niels Henrik Abel (1802-1829). Arild Stubhaug, who is both a historian and a mathematician, has written the definitive biography...

Es war die Kuhnheit meiner Gedanken

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Ein aufleuchtender Blitz

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Gosta Mittag Leffler

By Tiina Nunnally, Arild Stubhaug

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Gosta Mittag Leffler A Man of Conviction

By Arild Stubhaug

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Gosta Mittag Leffler

By Tiina Nunnally, Arild Stubhaug

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Ein aufleuchtender Blitz

By Arild Stubhaug

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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.