We construct an uncountable set of strong automorphisms of the Witt ring of a global field.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa163-1-1,
author = {Alfred Czoga\l a and Mieczys\l aw Kula},
title = {Automorphisms of Witt rings of global fields},
journal = {Acta Arithmetica},
volume = {166},
year = {2014},
pages = {1-13},
zbl = {1312.11025},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa163-1-1}
}
Alfred Czogała; Mieczysław Kula. Automorphisms of Witt rings of global fields. Acta Arithmetica, Tome 166 (2014) pp. 1-13. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa163-1-1/