Bugay, LeylaKelekci, Osman2019-08-012019-08-0120141300-0098https://dx.doi.org/10.3906/mat-1309-60https://hdl.handle.net/11480/4271The index and the period of an element a of a finite semigroup are defined as the smallest values of m >= 1 and r >= 1 such that a(m+r) = a(m), respectively. If m = 1 then a is called an element of index 1. The aim of this paper is to find some properties of the elements of index 1 in T-n, which we call transformations of index 1.eninfo:eu-repo/semantics/openAccessTransformationsorbitindexperiodArticle38341942510.3906/mat-1309-602-s2.0-84897647806Q2159253WOS:000335286000005Q4