This monograph contributes to the existence theory of difference sets, cyclic irreducible codes and similar objects. The new method of field descent for cyclotomic integers of presribed absolute value is developed. Applications include the first substantial progress towards the Circulant Hadamard Matrix Conjecture and Ryser`s conjecture since decades. It is shown that there is no Barker sequence of length l with 13<1<4×10^(12). Finally, a conjecturally complete classification of all irreducible cyclic two-weight codes is obtained.
Achetez cet ebook et obtenez-en 1 de plus GRATUITEMENT !
Langue Anglais ● Format PDF ● ISBN 9783540457978 ● Maison d’édition Springer Berlin Heidelberg ● Publié 2004 ● Téléchargeable 3 fois ● Devise EUR ● ID 6593231 ● Protection contre la copie Adobe DRM
Nécessite un lecteur de livre électronique compatible DRM