Minimal S-universality criteria may vary in size

Abstract

In this note, we give simple examples of sets S of quadratic forms that have minimal S-universality criteria of multiple cardinalities. This answers a question of Kim, Kim, and Oh in the negative.

5 pages

References in corpus (1)

• The 8-universality Criterion is Unique

Cited by in corpus (1)

• Minimal universality criterion sets on the representations of quadratic forms