Advanced Mathematical TheoriesAdvanced Mathematical Theories and ApplicationsAdvanced Combinatorial Mathematics

Raymond Mortini

2026.6.1College Mathematics Journal

DOI: 10.1080/07468342.2026.2661349

Abstract

SummaryIn this capsule I present two fascinating null sequences: sin n ( cos n)n and cos n ( sin n)n. This is an unexpected result, as each factor of them has the maximal cluster set [−1,1].

Citation format

MORTINI, Raymond. Two distinguished sequences. College Mathematics Journal, 2026: 1.