Harold Boley Books

Processing Declarative Knowledge

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Rules and Rule Markup Languages for the Semantic Web

By RuleML 2004 2004 Hiroshima Shi Japan

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Rules and Rule Markup Languages for the Semantic Web: Third International Workshop, RuleML 2004, Hiroshima, Japan, November 8, 2004. ProceedingsAuthor: Grigoris Antoniou, Harold Boley Published by...

A Tight Practical Integration of Relations and Functions

By Harold Boley

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"This text considers the notions of relations, as found in logic programming or in relational databases, and of functions, as found in functional programming or in equational languages. We study a...

Rules and Rule Markup Languages for the Semantic Web

By Grigoris Antoniou, Harold Boley

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Processing Declarative Knowledge

By Michael M. Richter, Harold Boley

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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.