In this paper, we will prove there are infinitely many integers n such that n2 -- 1 is square-free and admits universal octonary diagonal quadratic forms.
Cite this article
B. M. Kim, Universal octonary diagonal forms over some real quadratic fields. Comment. Math. Helv. 75 (2000), no. 3, pp. 410–414DOI 10.1007/S000140050133