Kominers, Scott Duke Uniqueness of the 2-universality criterion. (English) Zbl 1219.11061 Note Mat. 28, No. 2, 203-206 (2008). Summary: Kim, Kim, and Oh gave a minimal criterion for the 2-universality of positive definite integer-matrix quadratic forms. We show that this 2-universality criterion is unique in the sense of the uniqueness of the Conway-Schneeberger Fifteen Theorem. Cited in 4 Documents MSC: 11E20 General ternary and quaternary quadratic forms; forms of more than two variables 11E25 Sums of squares and representations by other particular quadratic forms Keywords:2-universality; universality criteria; quadratic forms PDFBibTeX XMLCite \textit{S. D. Kominers}, Note Mat. 28, No. 2, 203--206 (2008; Zbl 1219.11061) Full Text: arXiv Link