Yunus A.A.M.Ahmad T.2024-05-282024-05-2820161312885X10.12988/ams.2016.61262-s2.0-84979238773https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979238773&doi=10.12988%2fams.2016.6126&partnerID=40&md5=0fb6bce9d1e98d84f2c308ee7fcb563dhttps://oarep.usim.edu.my/handle/123456789/8525Fuzzy Topographic Topological Mapping (FTTM) is a model for solving neuromagnetic inverse problem. FTTM consists of four compo- nents and connected by three algorithms. FTTM version 1 and FTTM version 2 were designed to present 3D view of an unbounded single cur-rent and bounded multicurrent sources, respectively. In 2008, Suhana introduced some denitions on sequence of FTTM. In this paper, the vertices of FTTM is extended. The geometrical features for some nite vertices of FTTM; namely FKn is investigated and some new de ni-tions on sequence of FKn are introduced. A couple of new theorems are introduced and the proof for the theorems are provided. � 2016 Azrul Azim Mohd Yunus and Tahir Ahmad.en-USFuzzy topographic topological mappingOrdinary difference equationSequenceArticle192319341037-40