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A combinatorial proof of the quadratic Gauss sum

Adan Medrano Martin del Campo

Source record

Source: arXiv

Published: Oct 8, 2026

arXiv: 2610.11075

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Source abstract

We provide an elementary approach to computing the quadratic Gauss sum, emphasizing the method employed to compute the sum corresponding to multiples of 4. The proof method employed does not rely on the law of quadratic reciprocity, but only on exploiting symmetries among the sum's components, together with a recursive approach.

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