Hans Werner Henn Books

Homotopy Theoretic Methods in Group Cohomology Advanced Courses in Mathematics Crm Barcelona

By William G. Dwyer, Hans Werner Henn

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Homotopy Theoretic Methods in Group Cohomology Advanced Courses in Mathematics CRM Barcelona

By William G. Dwyer, Hans Werner Henn

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This book looks at group cohomology with tools that come from homotopy theory. These tools give both decomposition theorems (which rely on homotopy colimits to obtain a description of the cohomolog...

Homotopy Theory

By Johnson Mark W., Daniel G. Davis, J. F. Jardine, Charles Rezk, Hans Werner Henn

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Homotopy Theoretic Methods in Group Cohomology

By William G. Dwyer, Hans Werner Henn

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Homotopy Theoretic Methods in Group Cohomology

By Hans Werner Henn, William G Dwyer

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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.