Nikolaos S. Papageorgiou Books

This is the second of a two-volume exposition on the theory and applications of set-valued maps. Multivalued analysis is a remarkable mixture of many different fields of mathematics, such as topolo...

Nonlinear Analysis Series in Mathematical Analysis and Applications

By Nikolaos S. Papageorgiou, Leszek Gasinski

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Nonsmooth Critical Point Theory and Nonlinear Boundary Value Problems (Series in Mathematical Analysis and Applications, V. 8.)

By Nikolaos S. Papageorgiou, Leszek Gasinski

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"This book provides a complete presentation of nonsmooth critical point theory, then goes beyond it to study nonlinear second order boundary value problems. The authors do not limit their treatment...

Nonlinear Analysis Theory and Methods

By Nikolaos S. Papageorgiou, Dusan D. Repovs, Vicentiu D. Radulescu

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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.