PUNJAB UNIVERSITY JOURNAL OF MATHEMATICS, sa.9-10, ss.383-395, 2023 (ESCI)
In this paper, we investigate the notions of the left (right, twosided) 0 - TL-ideals and (0, sigma) - TL-ideals in a semigroup, as well as some of their related properties. Furthermore, the results of relative TL ideals are applied to L-ideals of semigroups.