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arXiv · 1507.04237

Universal quadratic forms and elements of small norm in real quadratic fields

Vítězslav Kala
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Abstract

For any positive integer M we show that there are infinitely many real quadratic fields that do not admit M-ary universal quadratic forms (without any restriction on the parity of their cross coefficients).

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Vítězslav Kala. 2015-10-26. Universal quadratic forms and elements of small norm in real quadratic fields. https://doi.org/10.1017/s0004972715001495

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