Akademik Veri Yönetim Sistemi
GLASGOW MATHEMATICAL JOURNAL, cilt.54, sa.2, ss.335-344, 2012 (SCI-Expanded)
In this paperwe look at presentations of subgroups of finitely presented groups with infinite cyclic quotients. We prove that if H is a finitely generated normal subgroup of a finitely presented group G with G/H cyclic, then H has ascending finite endomorphic presentation. It follows that any finitely presented indicable group without free semigroups has the structure of a semidirect product H (sic) Z, where H has finite ascending endomorphic presentation.