Christian Hesse Books

本书是德国作家黑塞自2014年发表于网页版的博客文章的选集,全书共54篇简短而独立的文章.黑塞深入浅出,用日常生活中具体的事例来讲解有趣的数学知识,将数学的魅力与说服力生动地展现在读者面前.书中几乎没有枯燥的数学公式,休憩间隙花几分钟就能读完一篇.许多看似无厘头的问题和观点,在作者的引领下,却可以尝试用数学理论和思维来解答,从而帮助读者开拓了看问题的新角度,窥探到数学在生活中的美妙

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.