References
Dickson, L.E.: Algbras and their arithmetics. New York: Dover Publications 1960
Griffin, M., Krusemeyer, M.: Matrices as sums of squares. Linear Multilinear Algebra5, 33–44 (1977)
Lam, T.Y.: The Algebraic Theory of Quadratic Forms. Amsterdam: Benjamin 1973
Leep, D.B., Shapiro, D.B., Wadsworth, A.R.: Sums of squares in division algebras. Math. Z.190, 151–162 (1985)
Reiner, I.: Maximal Orders. New York: Academic Press 1975
Wedderburn, J.H.M.: On division algebras. Trans. Am. Math. Soc.22, 129–135 (1921)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lewis, D.W. Sums of squares in central simple algebras. Math Z 190, 497–498 (1985). https://doi.org/10.1007/BF01214748
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01214748