** A. Amroune and A. Oumhani**
A representation theorem for bounded distributive hyperlattices, pp. 1-12

** J.M. Cornejo and H.P. Sankappanavar**
Implication zroupoids and identities of associative type, pp. 13-34

** A. Daneshkhah and Y. Jalilian**
A characterization of almost simple groups related to L

_{3}(37), pp. 35-40

** I.I. Deriyenko**
Pseudoisomorphisms of quasigroups, pp. 41-44

** W.A. Dudek and V.S. Trokhimenko**
Menger algebras of associative and self-distributive n-ary operations, pp. 45-52

** M.M. Ebrahimi, Kh. Keshvardoost, and M. Mahmoudi**
Retractions of cyclic finitely supported Cb-sets, pp.53-66

** K. Hamidizadeh and G. Aghababaei**
The Cayley graph of commutative ring on triangular subsets, pp. 67-76

** D. Heidari**
There exist semigroups which have bi-bases with different cardinalities, pp. 77-78

** N. Kehayopulu**
A note on hyperideals in ordered hypersemigroups, pp. 79-85

** F. Koorepazan-Moftakhar, A.R. Ashrafi and O. Ori**
Symmetry groups and Graovac-Pisanski index of some linear polymers, pp. 87-102

** S.K. Maity, R. Chatterjee, and R. Ghosh**
Retractive nil-extensions of completely simple semirings, pp. 103-108

** D.N. Moldovyan, N.A. Moldovyan, and V.A. Shcherbacov**
Non-commutative finite associative algebras of 3-dimensional vectors, pp.109-120

** A. Ramin and A. Abbasi**
Torsion-unitary Cayley graph of an R-module as a functor, pp. 121-138

** A. Razaq**
Action of the group {x,y : x

^{2}=y

^{6}=1} on imaginary quadratic fields, pp. 139-148

** Ze Gu**
On bi-ideals of ordered semigroups, pp. 149-154

### vol.26 (2018) No. 2

** G.M. Addis, D.A. Engidaw and T.G. Alemayehu**
Fuzzy action of fuzzy groups on a set, pp. 155-164

** A. Babai**
Recognition by order and set of orders of vanishing elements of C

_{n}(2

^{a}), for some n and a, pp. 163-172

** Z. Barati**
Planar and outerplanar indices of zero divisor graphs of partially ordered sets, pp. 173-184

** T. Changphas and P. Kummoon**
Purity of ideals and generalized ideals on ordered semigroups, pp. 185-196

** P. Chansangiam**
Weighted means and weighted mean equations in lineated symmetric spaces, pp. 197-210

** W.A. Dudek and V.V. Mukhin**
On the extension of continuous homomorphisms of topological n-ary semigroups, pp. 211-216

** D. Hassanzadeh-Lelekaami and H. Roshan-Shekalgourab**
Prime spectra and finitely generated algebras, pp. 217-228

** T.G. Jaiyeola and G.O. Effiong**
Basarab loop and its variance with inverse properties, pp. 229-238

** N. Kehayopulu**
On intra-regular ordered hypersemigroups, pp. 230-246

** P. Kumar**
Maximal non-commuting set in finite odd order metacyclic p-group, pp. 247-250

** M. Kumbhakar and A. K. Bhuniyan**
On irreducible pseudo-prime spectrum of topological le-modules, pp. 251-262

** N.A. Moldovyan**
Unified method for defining finite associative algebras of arbitrary even dimensions, pp. 263-270

** T.K. Mondal**
Introduction to quotient ordered semirings, pp. 271-280

** P. Nasehpour**
Some remarks on ideals of commutative semirings, pp. 281-298

** D.A. Romano**
Semigroup action on groupoid ordered under co-order, pp. 299-308

** P. Summaprab and T. Changphas**
Generalized kernels of ordered semigroups, pp. 309-316

** N. Vaez Moosavi, K. Khashyarmanesh, S. Mohammadikhah and M. Afkhami**
On the Cayley graphs of upper triangular matrix rings, pp. 317-326