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Systems of diagonal Diophantine inequalities
Authors:Eric Freeman
Affiliation:Department of Mathematics, University of Colorado, 395 UCB, Boulder, Colorado 80309
Abstract:We treat systems of real diagonal forms $F_1({mathbf x}), F_2({mathbf x}), ldots, F_R({mathbf x})$ of degree $k$, in $s$ variables. We give a lower bound $s_0(R,k)$, which depends only on $R$ and $k$, such that if $s geq s_0(R,k)$ holds, then, under certain conditions on the forms, and for any positive real number $epsilon$, there is a nonzero integral simultaneous solution $displaystyle{{mathbf x}in {mathbb Z}^s}$ of the system of Diophantine inequalities $vert F_i({mathbf x})vert < epsilon$ for $1 leq i leq R$. In particular, our result is one of the first to treat systems of inequalities of even degree. The result is an extension of earlier work by the author on quadratic forms. Also, a restriction in that work is removed, which enables us to now treat combined systems of Diophantine equations and inequalities.

Keywords:Combined systems of Diophantine equations and inequalities   forms in many variables   applications of the Hardy-Littlewood method.
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