A complete classification of well-rounded real quadratic ideal lattices
classification
🧮 math.NT
keywords
latticesclassificationcompleteidealquadraticrealsqrtwell-rounded
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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 $\sqrt{\frac{d}{3}}<a<\sqrt{3d}.$
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