Algebraic $K$-theory and sums-of-squares formulas
Documenta mathematica, Tome 10 (2005), pp. 357-366
We prove a result about the existence of certain 'sums-of-squares' formulas over a field F. A classical theorem uses topological K-theory to show that if such a formula exists over R, then certain powers of 2 must divide certain binomial coefficients. In this paper we use algebraic K-theory to extend the result to all fields not of characteristic 2.
@article{10_4171_dm_192,
author = {Daniel Dugger and Daniel C. Isaksen},
title = {Algebraic $K$-theory and sums-of-squares formulas},
journal = {Documenta mathematica},
pages = {357--366},
year = {2005},
volume = {10},
doi = {10.4171/dm/192},
url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/192/}
}
Daniel Dugger; Daniel C. Isaksen. Algebraic $K$-theory and sums-of-squares formulas. Documenta mathematica, Tome 10 (2005), pp. 357-366. doi: 10.4171/dm/192
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