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What do the bursar of Eton College, a canon of Mainz Cathedral, a young knight from near Cologne, and a Kentish nobleman's chaplain have in common? Two Germans, residents of the Holy Roman Empire, and two Englishmen, just as the western horizons of the known world were beginning to expand. These four men - William Wey, Bernhard von Breydenbach, Arnold von Harff, and Thomas Larke - are amongst the thousands of western Christians who undertook the arduous journey to the Holy Land in the decades immediately before the Reformation. More importantly, they are members of a much more select group: those who left written accounts of their travels, for the journey to Jerusalem in the late Middle Ages...
This new version of the author's prizewinning book, Algebraic Theory of Quadratic Forms (W. A. Benjamin, Inc., 1973), gives a modern and self-contained introduction to the theory of quadratic forms over fields of characteristic different from two. Starting with few prerequisites beyond linear algebra, the author charts an expert course from Witt's classical theory of quadratic forms, quaternion and Clifford algebras, Artin-Schreier theory of formally real fields, and structural theorems on Witt rings, to the theory of Pfister forms, function fields, and field invariants. These main developments are seamlessly interwoven with excursions into Brauer-Wall groups, local and global fields, trace ...
Reprint of the original, first published in 1871.
Reprint of the original, first published in 1871.
This is the first comprehensive study of the images in five profusely illustrated Yiddish books from sixteenth-century Italy: a manuscript of Jewish customs, and four printed volumes - two books of customs, a chivalric romance, and a book of fables.