In this paper, introduced a new notions of N-sub algebras. (closed, commutative, retrenched) N-ideals, ?-negative functions, and  -translations are introduced, and related properties are investigated. Characterizations of an N-sub algebra and a (Commutative) N-ideal are given. Relations between an N-sub algebra an N-ideal and commutative N-ideal are discussed. We verify that every ?-translations of an N-sub algebra (resp. N-ideal) is a retrenched N-sub algebra (resp.retrenched N-ideals). Already introduced a notationof prime ideal in BCIK – algebra show that it is equivalent to the last definition of prime ideal in lower BCIK – Semi lattices. Then we attempt to generalized some useful theorems about prime ideals, in BCIK-algebras, instead of lower BCIK-Semi lattices. We already investigate some results for PI-lattices being a new classical of BCIK–lattices. Specially, we prove that any Boolean lattice is a PI-lattice and we show that if X is a PI-lattice with bounded commutative, then X is an involutory BCIK-algebra if and only if X is a commutative BCIK-algebra.
                                
                                
                                    
                                    BCIK-algebra, N-sub algebra (closed, commutative, retrenched) N-ideal, ?- negative functions, ?-translations, prime ideals, maximal ideals
                                
                                
                                
                                
                                    
                                        
                                        
                                        
                                        
                                            
                                                
                                                    International Journal of Trend in Scientific Research and Development - IJTSRD having
                                                    online ISSN 2456-6470. IJTSRD is a leading Open Access, Peer-Reviewed International
                                                    Journal which provides rapid publication of your research articles and aims to promote
                                                    the theory and practice along with knowledge sharing between researchers, developers,
                                                    engineers, students, and practitioners working in and around the world in many areas
                                                    like Sciences, Technology, Innovation, Engineering, Agriculture, Management and
                                                    many more and it is recommended by all Universities, review articles and short communications
                                                    in all subjects. IJTSRD running an International Journal who are proving quality
                                                    publication of peer reviewed and refereed international journals from diverse fields
                                                    that emphasizes new research, development and their applications. IJTSRD provides
                                                    an online access to exchange your research work, technical notes & surveying results
                                                    among professionals throughout the world in e-journals. IJTSRD is a fastest growing
                                                    and dynamic professional organization. The aim of this organization is to provide
                                                    access not only to world class research resources, but through its professionals
                                                    aim to bring in a significant transformation in the real of open access journals
                                                    and online publishing.