{ "id": "1902.01773", "version": "v1", "published": "2019-02-05T16:32:19.000Z", "updated": "2019-02-05T16:32:19.000Z", "title": "A complete classification of well-rounded real quadratic ideal lattices", "authors": [ "Anitha Srinivasan" ], "categories": [ "math.NT" ], "abstract": "We provide a complete classification of well-rounded ideal lattices arising from real quadratic fields. We show that the ideals that give rise to such lattices are precisely the ones that correspond to divisors $a$ of the discriminant $d$ that satisfy $\\sqrt{\\frac{d}{3}}