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The American Mathematical Monthly Volume 127, 2020 - Issue 8
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Notes

A Counting Proof for When 2 Is a Quadratic Residue

Karthik ChandrasekharDepartment of Mathematics, University of Kentucky, Lexington, KY, USA;
,
Richard EhrenborgDepartment of Mathematics, University of Kentucky, Lexington, KY, USA; ORCID Iconhttp://orcid.org/0000-0001-5854-3890
ORCID Icon &
Frits BeukersDepartment of Mathematics, University of Utrecht, 3508 TA Utrecht, The Netherlands
Pages 750-751 | Received 22 Apr 2019, Accepted 20 Jun 2019, Published online: 21 Sep 2020

Reference

  • Davidoff, G., Sarnak, P., Valette, A. (2003). Elementary Number Theory, Group Theory, and Ramanujan Graphs. Cambridge, UK: Cambridge Univ. Press.

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