Rogerio Reis Books

Descriptional Complexity of Formal Systems

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This book constitutes the refereed proceedings of the 15th International Workshop of Descriptional Complexity of Formal Systems, DCFS 2013, held in London, ON, Canada, in July 2013. The 22 revised...

Descriptional Complexity of Formal Systems

By Helmut Jurgensen, Rogerio Reis

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Developments in Language Theory

By Rogerio Reis, Nelma Moreira

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Descriptional Complexity of Formal Systems

By Jurgensen, Rogerio Reis

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Role of Theory in Computer Science

By Stavros Konstantinidis, Rogerio Reis, Nelma Moreira

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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.