Uniqueness of the 2-universality Criterion
arXiv:0708.4340
Abstract
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.
4 pages. To appear, Note di Matematica