English

Almost 2-universal diagonal quinary quadratic forms

Number Theory 2019-01-25 v1

Abstract

A (positive definite integral) quadratic form is called almost 2-universal if it represents all (positive definite integral) binary quadratic forms except those in only finitely many equivalence classes. Oh [7] determined all almost 2-universal quinary diagonal quadratic forms remaining three as candidates. In this article, we prove that those three candidates are indeed almost 2-universal.

Keywords

Cite

@article{arxiv.1901.08220,
  title  = {Almost 2-universal diagonal quinary quadratic forms},
  author = {Myeong Jae Kim},
  journal= {arXiv preprint arXiv:1901.08220},
  year   = {2019}
}

Comments

8 pages

R2 v1 2026-06-23T07:20:35.325Z