A. S. Troelstra Books

Constructivism in Mathematics

By A. S. Troelstra, RANIS

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Basic Proof Theory 2ed

By A. S. Troelstra, Troelstra Schwichtenberg

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"This introduction to the basic ideas of structural proof theory contains a through discussion and comparison of various types of formalization of first-order logic. Examples are given of several a...

Lectures on linear logic

By A. S. Troelstra

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Lectures on linear logic

By A. S. Troelstra

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Tijgers op de Ararat

By A. S. Troelstra

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Constructivism in Mathematics Vol 1

By A. S. Troelstra, D. Van Dalen

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Constructivism in Mathematics Vol 2 Vol. II

By A. S. Troelstra, D. Van Dalen

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L. E. J. Brouwer Centenary Symposium

By A. S. Troelstra, D. Van Dalen

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Constructivism in Mathematics Vol. 2

By A. S. Troelstra, D. Van Dalen

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Basic Proof Theory

By H. Schwichtenberg, A. S. Troelstra

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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.