Hex Product formA Paperback by Bjarne Toft, Bjarne Toft £999.99 Includes FREE delivery Out of stock Quantity Out of stock Trusted by thousands of customers. See 2,385+ Customer Reviews View other formats and editions of Hex by Bjarne Toft Book details Publisher CRC Press Published 29 January 2019 ISBN-13 9780367144227 978-0367144227 Also in: Applied mathematics Mathematical logic