Edit Profile (opens in new tab) Kehayopulu, Niovi Compute Distance To: Compute Author ID: kehayopulu.niovi Published as: Kehayopulu, Niovi; Kehayopulu, N. Homepage: http://scholar.uoa.gr/nkehayop External Links: MGP · ResearchGate · Math-Net.Ru · dblp Documents Indexed: 229 Publications since 1971, including 1 Book Reviewing Activity: 81 Reviews Co-Authors: 15 Co-Authors with 108 Joint Publications 380 Co-Co-Authors all top 5 Co-Authors 121 single-authored 90 Tsingelis, Michael 7 Lajos, Sandor 7 Ponizovskiĭ, Iosif Solomonovich 6 Shum, Kar-Ping 3 Lepouras, George 2 Arslanov, Marat M. 2 Kiriakuli, P. 1 Alex, Stelios 1 Fuchs, László 1 Kappos, Demetrios A. 1 Pasku, Elton 1 Rao, S. Hanumantha 1 Reis, Raquel 1 Xie, Xiang-Yun 1 Zhu, Pingyu all top 5 Serials 26 Semigroup Forum 23 Mathematica Japonica 19 PU.M.A. Pure Mathematics and Applications 17 Lobachevskii Journal of Mathematics 16 Turkish Journal of Mathematics 15 Quasigroups and Related Systems 15 Scientiae Mathematicae Japonicae 14 Scientiae Mathematicae 9 European Journal of Pure and Applied Mathematics 8 Russian Mathematics 6 Mathematica Slovaca 4 International Journal of Algebra 3 Mathematica Balkanica 3 Information Sciences 3 International Journal of Mathematics and Mathematical Sciences 3 Armenian Journal of Mathematics 2 Communications in Algebra 2 Algebra Universalis 2 Soochow Journal of Mathematics 2 Algebras, Groups and Geometries 2 Zapiski Nauchnykh Seminarov POMI 2 The Journal of Fuzzy Mathematics 2 Algebra Colloquium 2 Journal of Mathematical Sciences (New York) 2 Discussiones Mathematicae. General Algebra and Applications 2 International Mathematical Forum 2 Journal of Hyperstructures 1 Discrete Mathematics 1 Simon Stevin 1 Bulletin of the Greek Mathematical Society 1 Southeast Asian Bulletin of Mathematics 1 St. Petersburg Mathematical Journal 1 Filomat 1 Italian Journal of Pure and Applied Mathematics 1 Communications of the Korean Mathematical Society 1 International Mathematical Journal 1 Algebra and Discrete Mathematics 1 Hacettepe Journal of Mathematics and Statistics 1 Bulletin Société Mathématique de Grèce. Nouvelle Série 1 Asian-European Journal of Mathematics 1 Afrika Matematika all top 5 Fields 213 Order, lattices, ordered algebraic structures (06-XX) 103 Group theory and generalizations (20-XX) 8 General algebraic systems (08-XX) 3 Mathematical logic and foundations (03-XX) 2 Commutative algebra (13-XX) 1 Field theory and polynomials (12-XX) 1 General topology (54-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 130 Publications have been cited 796 times in 211 Documents Cited by ▼ Year ▼ Fuzzy sets in ordered groupoids. Zbl 1006.06008Kehayopulu, Niovi; Tsingelis, Michael 48 2002 On prime, weakly prime ideals in ordered semigroups. Zbl 0756.06008Kehayopulu, Niovi 38 1992 On weakly prime ideals of ordered semigroups. Zbl 0717.06006Kehayopulu, Niovi 36 1990 On intra-regular ordered semigroups. Zbl 0776.06013Kehayopulu, Niovi 33 1993 On intra-regular ve-semigroups. Zbl 0434.06015Kehayopulu, Niovi 30 1980 Fuzzy bi-ideals in ordered semigroups. Zbl 1080.06021Kehayopulu, Niovi; Tsingelis, Michael 28 2005 On subdirectly irreducible ordered semigroups. Zbl 0823.06010Kehayopulu, Niovi; Tsingelis, Michael 26 1995 Regular ordered semigroups in terms of fuzzy subsets. Zbl 1141.06013Kehayopulu, Niovi; Tsingelis, Michael 25 2006 On regular duo ordered semigroups. Zbl 0760.06006Kehayopulu, Niovi 20 1992 Remark on ordered semigroups. Zbl 0717.06008Kehayopulu, Niovi 20 1990 The embedding of an ordered groupoid into a poe-groupoid in terms of fuzzy sets. Zbl 1039.06006Kehayopulu, Niovi; Tsingelis, Michael 17 2003 Pseudoorder in ordered semigroups. Zbl 0828.06010Kehayopulu, Niovi; Tsingelis, Michael 17 1995 On weakly commutative poe-semigroups. Zbl 0613.06009Kehayopulu, Niovi 15 1987 On completely regular ordered semigroups. Zbl 0905.06011Kehayopulu, Niovi 14 1998 On semilattices of simple poe-semigroups. Zbl 0764.06007Kehayopulu, Niovi 13 1993 On regular orderd semigroups. Zbl 0895.06009Kehayopulu, Niovi 13 1997 On left regular ordered semigroups. Zbl 0717.06007Kehayopulu, Niovi 12 1990 Ideal extensions of ordered semigroups. Zbl 1028.06010Kehayopulu, Niovi; Tsingelis, Michael 11 2003 On right regular and right duo ordered semigroups. Zbl 0736.06019Kehayopulu, Niovi 11 1991 Note on Green’s relations in ordered semigroups. Zbl 0736.06021Kehayopulu, Niovi 11 1991 On hypersemigroups. Zbl 1374.20073Kehayopulu, Niovi 10 2015 On left regular and left duo poe-semigroups. Zbl 0756.06007Kehayopulu, Niovi 10 1992 How we pass from semigroups to hypersemigroups. Zbl 1387.20053Kehayopulu, Niovi 10 2018 Left regular and intra-regular ordered hypersemigroups in terms of semiprime and fuzzy semiprime subsets. Zbl 1431.06010Kehayopulu, Niovi 9 2017 On regular, intra-regular ordered semigroups. Zbl 0813.06013Kehayopulu, Niovi 8 1993 On the decomposition of prime ideals of ordered semigroups into their \(\mathcal N\)-classes. Zbl 0782.06013Kehayopulu, Niovi; Tsingelis, Michael 8 1993 On ordered \(\Gamma\)-semigroups. Zbl 1194.06015Kehayopulu, Niovi 8 2010 Generalized ideal elements in poe-semigroups. Zbl 0499.06012Kehayopulu, Niovi 7 1982 A characterization of prime and semiprime ideals of groupoids in terms of fuzzy subsets. Zbl 0999.20057Kehayopulu, Niovi; Xie, Xiang-Yun; Tsingelis, Michael 7 2001 On intra-regular ordered semigroups. Zbl 0803.06014Kehayopulu, N.; Lajos, S.; Tsingelis, M. 7 1993 On completely regular poe-semigroups. Zbl 0745.06007Kehayopulu, Niovi 7 1992 Fuzzy right, left, quasi-ideals, bi-ideals in ordered semigroups. Zbl 1184.06006Kehayopulu, Niovi; Tsingelis, Michael 7 2009 A note on fuzzy sets in semigroups. Zbl 0960.20040Kehayopulu, Niovi; Tsingelis, Michael 7 1999 Fuzzy interior ideals in ordered semigroups. Zbl 1120.06013Kehayopulu, Niovi; Tsingelis, Michael 7 2006 On ordered hypersemigroups with idempotent ideals, prime and weakly prime ideals. Zbl 1457.06006Kehayopulu, Niovi 7 2018 On ordered hypersemigroups given by a table of multiplication and a figure. Zbl 1424.06068Kehayopulu, Niovi 7 2018 A characterization of regular le-semigroups. Zbl 0467.06010Kehayopulu, Niovi 6 1981 Archimedean ordered semigroups as ideal extensions. Zbl 1169.06008Kehayopulu, Niovi; Tsingelis, Michael 6 2009 On weakly commutative poe-semigroups. Zbl 0708.06011Kehayopulu, N.; Kiriakuli, P.; Hanumantha Rao, S.; Lakshmi, P. 6 1990 On filters generated in poe-semigroups. Zbl 0711.06013Kehayopulu, Niovi 6 1990 On prime, weakly prime ideals in \(po\)-\(\Gamma\)-semigroups. Zbl 1236.06030Kehayopulu, Niovi 6 2009 On \(le\)-semigroups. Zbl 1424.06052Kehayopulu, Niovi 6 2016 On left regular ordered semigroups. Zbl 1006.06007Kehayopulu, Niovi; Tsingelis, Michael 5 2002 A note on minimal and maximal ideals of ordered semigroups. Zbl 1015.06015Arslanov, M.; Kehayopulu, N. 5 2002 Remark on ordered semigroups. Zbl 0823.06006Kehayopulu, N.; Tsingelis, M. 5 1992 A note on strongly regular ordered semigroups. Zbl 0905.06012Kehayopulu, Niovi 5 1998 Ideals and Green’s relations in ordered semigroups. Zbl 1121.06014Kehayopulu, Niovi 5 2006 Characterization of left quasi-regular and semisimple ordered semigroups in terms of fuzzy sets. Zbl 1271.06012Kehayopulu, Niovi 5 2012 Lattice ordered semigroups and hypersemigroups. Zbl 07164332Kehayopulu, Niovi 5 2019 Hypersemigroups and fuzzy hypersemigroups. Zbl 1381.20053Kehayopulu, Niovi 4 2017 Green’s relations and the relation \({\mathcal N}\) in \(\Gamma\)-semigroups. Zbl 1353.20044Kehayopulu, Niovi 4 2014 On weakly commutative ordered semigroups. Zbl 0890.06010Kehayopulu, Niovi; Tsingelis, Michael 4 1998 Ordered semigroups whose elements are separated by prime ideals. Zbl 1314.06018Kehayopulu, Niovi 4 2012 The ideal extensions of lattices. Zbl 0711.06010Kehayopulu, N.; Kiriakuli, P. 4 1990 On regular duo po-\(\Gamma \)-semigroups. Zbl 1289.06039Kehayopulu, Niovi 4 2011 Weakly prime and prime fuzzy ideals in ordered semigroups. Zbl 1143.06006Kehayopulu, Niovi 4 2007 On regular and intra-regular poe-semigroups. Zbl 0537.06013Kehayopulu, Niovi 4 1984 The embedding of some ordered semigroups into ordered groups. Zbl 0960.06008Kehayopulu, Niovi; Tsingelis, Michael 3 2000 Fuzzy sets in \(\leq\)-hypergroupoids. Zbl 1397.06032Kehayopulu, Niovi 3 2017 Left regular and intra-regular ordered semigroups in terms of fuzzy subsets. Zbl 1125.06011Kehayopulu, Niovi; Tsingelis, Michael 3 2006 On adjoining greatest element to ordered semigroups. Zbl 0778.06013Kehayopulu, Niovi 3 1993 On regular, regular duo ordered semigroups. Zbl 0837.06010Kehayopulu, Niovi 3 1994 The embedding of an ordered semigroup in a simple one with identity. Zbl 0862.06004Kehayopulu, Niovi; Tsingelis, Michael 3 1996 On regular le-semigroups. Zbl 0811.06014Kehayopulu, Niovi 3 1994 On left regular and intra-regular ordered semigroups. Zbl 1349.06038Kehayopulu, Niovi; Tsingelis, Michael 3 2014 On ordered semigroups which are semilattices of simple and regular semigroups. Zbl 1283.06028Kehayopulu, Niovi; Tsingelis, Michael 3 2013 On adjoining identity to semigroups, greatest element to ordered sets. Zbl 0759.20018Kehayopulu, Niovi 3 1991 Semilattices of Archimedean ordered semigroups. Zbl 1160.06005Kehayopulu, Niovi; Tsingelis, Michael 3 2008 Note on interior ideals, ideal elements in ordered semigroups. Zbl 0962.06016Kehayopulu, Niovi 3 1999 A note on semilattice congruences in ordered semigroups. Zbl 0976.06009Kehayopulu, N.; Tsingelis, M. 3 2000 A note on fuzzy sets of groupoids-semigroups. Zbl 0966.06019Kehayopulu, Niovi; Tsingelis, Michael 3 2000 Green’s relations in ordered groupoids in terms of fuzzy subsets. Zbl 1144.06007Kehayopulu, Niovi; Tsingelis, Michael 3 2007 On semilattice congruences on hypersemigroups and on ordered hypersemigroups. Zbl 1413.20052Kehayopulu, Niovi 3 2018 On regular le-semigroups. Zbl 0534.06006Kehayopulu, Niovi 3 1984 On left (resp. right) duo regular poe-semigroups. Zbl 0549.06008Kehayopulu, Niovi 3 1985 On \((m, n)\)-regular le-semigroups. Zbl 0384.06018Kehayopulu, Niovi 2 1975 A characterization of some regular duo le-semigroups. Zbl 0443.06017Kehayopulu, N. 2 1979 An application of \(\Gamma \)-semigroups techniques to the Green’s theorem. Zbl 1399.20087Kehayopulu, Niovi 2 2018 \(m\)-systems and \(n\)-systems in ordered semigroups. Zbl 1050.06009Kehayopulu, Niovi 2 2004 Congruences in ordered semigroups. Zbl 0994.06007Kehayopulu, N.; Tsingelis, M. 2 2000 On semigroups which are groups. Zbl 1047.20048Kehayopulu, Niovi; Tsingelis, Michael 2 2003 \(N\)-subsets of ordered semigroups. Zbl 0823.06007Kehayopulu, N.; Tsingelis, M. 2 1992 On separative ordered semigroups. Zbl 0979.06008Kehayopulu, Niovi; Tsingelis, Michael 2 1998 Note on bi-ideals in ordered semigroups. Zbl 0854.06023Kehayopulu, Niovi 2 1995 On ordered semigroups without nilpotent ideal elements. Zbl 0736.06022Kehayopulu, Niovi 2 1991 From \(\vee e\)-semigroups to hypersemigroups. Zbl 1491.06039Kehayopulu, Niovi 2 2021 On right regular and right duo ordered semigroups. Zbl 0890.06009Kehayopulu, Niovi; Lepouras, George; Tsingelis, Michael 2 1997 Band congruences in ordered semigroups. Zbl 1156.06008Kehayopulu, Niovi; Tsingelis, Michael 2 2007 III-homomorphisms and III-congruences on posets. Zbl 1148.06001Shum, K. P.; Zhu, Pingyu; Kehayopulu, N. 2 2008 Characterization of some types of ordered semigroups in terms of fuzzy sets. Zbl 1173.06005Kehayopulu, N.; Tsingelis, M. 2 2008 A note on filters in ordered semigroups. Zbl 0902.06023Kehayopulu, Niovi; Lajos, S.; Tsingelis, Michael 2 1997 On fuzzy ordered groupoids-semigroups. Zbl 1135.06011Kehayopulu, Niovi; Tsingelis, Michael 2 2007 Fuzzy ideals in ordered semigroups. Zbl 1142.06004Kehayopulu, Niovi; Tsingelis, Michael 2 2007 The role of the ideal elements in studying the structure of some ordered semigroups. Zbl 1424.06053Kehayopulu, Niovi 2 2017 Erratum to: “Application of \((m,n)\)-\(\Gamma\)-hyperideals in characterization of LA-\(\Gamma\)-semihypergroups” by Abul Basar. Zbl 1463.06121Kehayopulu, Niovi 2 2020 On fuzzy prime and fuzzy semiprime ideals of \(\le\)-hypergroupoids. Zbl 1416.06013Kehayopulu, Niovi 1 2016 On intra-regular and some left regular \(\Gamma\)-semigroups. Zbl 1338.20062Kehayopulu, Niovi; Tsingelis, Michael 1 2015 On a characterization of regular duo le-semigroups. Zbl 0486.06005Kehayopulu, Niovi 1 1977 A characterization of strongly regular ordered semigroups. Zbl 0932.06011Kehayopulu, Niovi; Tsingelis, Michael 1 1998 Remark on quasi-ideals of ordered semigroups. Zbl 1374.06037Kehayopulu, Niovi 1 2015 On hypersemigroups. Zbl 1497.20069Kehayopulu, Niovi 1 2022 From \(\vee e\)-semigroups to hypersemigroups. Zbl 1491.06039Kehayopulu, Niovi 2 2021 On involution lattice ordered semigroups. Zbl 1498.06035Kehayopulu, Niovi 1 2021 Erratum to: “Application of \((m,n)\)-\(\Gamma\)-hyperideals in characterization of LA-\(\Gamma\)-semihypergroups” by Abul Basar. Zbl 1463.06121Kehayopulu, Niovi 2 2020 Erratum to: “Study on quasi-\( \Gamma \)-hyperideals in \(\Gamma \)-semihypergroups”. Zbl 1443.20093Kehayopulu, Niovi 1 2020 Lattice ordered semigroups and hypersemigroups. Zbl 07164332Kehayopulu, Niovi 5 2019 From ordered semigroups to ordered hypersemigroups. Zbl 1483.06018Kehayopulu, Niovi 1 2019 How we pass from semigroups to hypersemigroups. Zbl 1387.20053Kehayopulu, Niovi 10 2018 On ordered hypersemigroups with idempotent ideals, prime and weakly prime ideals. Zbl 1457.06006Kehayopulu, Niovi 7 2018 On ordered hypersemigroups given by a table of multiplication and a figure. Zbl 1424.06068Kehayopulu, Niovi 7 2018 On semilattice congruences on hypersemigroups and on ordered hypersemigroups. Zbl 1413.20052Kehayopulu, Niovi 3 2018 An application of \(\Gamma \)-semigroups techniques to the Green’s theorem. Zbl 1399.20087Kehayopulu, Niovi 2 2018 A note on Archimedean ordered semigroups. Zbl 1414.06007Kehayopulu, Niovi 1 2018 Fuzzy right (left) ideals in hypergroupoids and fuzzy bi-ideals in hypersemigroups. Zbl 1404.20057Kehayopulu, Niovi 1 2018 Left regular and intra-regular ordered hypersemigroups in terms of semiprime and fuzzy semiprime subsets. Zbl 1431.06010Kehayopulu, Niovi 9 2017 Hypersemigroups and fuzzy hypersemigroups. Zbl 1381.20053Kehayopulu, Niovi 4 2017 Fuzzy sets in \(\leq\)-hypergroupoids. Zbl 1397.06032Kehayopulu, Niovi 3 2017 The role of the ideal elements in studying the structure of some ordered semigroups. Zbl 1424.06053Kehayopulu, Niovi 2 2017 On \(le\)-semigroups. Zbl 1424.06052Kehayopulu, Niovi 6 2016 On fuzzy prime and fuzzy semiprime ideals of \(\le\)-hypergroupoids. Zbl 1416.06013Kehayopulu, Niovi 1 2016 On hypersemigroups. Zbl 1374.20073Kehayopulu, Niovi 10 2015 On intra-regular and some left regular \(\Gamma\)-semigroups. Zbl 1338.20062Kehayopulu, Niovi; Tsingelis, Michael 1 2015 Remark on quasi-ideals of ordered semigroups. Zbl 1374.06037Kehayopulu, Niovi 1 2015 Green’s relations and the relation \({\mathcal N}\) in \(\Gamma\)-semigroups. Zbl 1353.20044Kehayopulu, Niovi 4 2014 On left regular and intra-regular ordered semigroups. Zbl 1349.06038Kehayopulu, Niovi; Tsingelis, Michael 3 2014 On fuzzy po-\(\Gamma\)-semigroups. Zbl 1310.06017Kehayopulu, Niovi 1 2014 On ordered semigroups which are semilattices of simple and regular semigroups. Zbl 1283.06028Kehayopulu, Niovi; Tsingelis, Michael 3 2013 On bi-ideals of ordered \(\Gamma\)-semigroups – a corrigendum. Zbl 1291.06009Kehayopulu, Niovi 1 2013 On ordered semigroups which are semilattices of left simple semigroups. Zbl 1349.06037Kehayopulu, Niovi; Tsingelis, Michael 1 2013 Characterization of left quasi-regular and semisimple ordered semigroups in terms of fuzzy sets. Zbl 1271.06012Kehayopulu, Niovi 5 2012 Ordered semigroups whose elements are separated by prime ideals. Zbl 1314.06018Kehayopulu, Niovi 4 2012 Left quasi-regular and intra-regular ordered semigroups using fuzzy ideals. Zbl 1298.06005Kehayopulu, Niovi 1 2012 On regular duo po-\(\Gamma \)-semigroups. Zbl 1289.06039Kehayopulu, Niovi 4 2011 On ordered fuzzy \(\Gamma\)-groupoids. Zbl 1253.06026Kehayopulu, Niovi 1 2011 Ordered semigroups in which the left ideals are intra-regular semigroups. Zbl 1269.06005Kehayopulu, Niovi; Tsingelis, Michael 1 2011 On ordered \(\Gamma\)-semigroups. Zbl 1194.06015Kehayopulu, Niovi 8 2010 Fuzzy right, left, quasi-ideals, bi-ideals in ordered semigroups. Zbl 1184.06006Kehayopulu, Niovi; Tsingelis, Michael 7 2009 Archimedean ordered semigroups as ideal extensions. Zbl 1169.06008Kehayopulu, Niovi; Tsingelis, Michael 6 2009 On prime, weakly prime ideals in \(po\)-\(\Gamma\)-semigroups. Zbl 1236.06030Kehayopulu, Niovi 6 2009 Ideal extensions of lattices. Zbl 1181.06001Kehayopulu, N. 1 2009 Embedding of some ordered integral domains into ordered fields. Zbl 1236.06022Kehayopulu, Niovi; Tsingelis, Michael 1 2009 Semilattices of Archimedean ordered semigroups. Zbl 1160.06005Kehayopulu, Niovi; Tsingelis, Michael 3 2008 III-homomorphisms and III-congruences on posets. Zbl 1148.06001Shum, K. P.; Zhu, Pingyu; Kehayopulu, N. 2 2008 Characterization of some types of ordered semigroups in terms of fuzzy sets. Zbl 1173.06005Kehayopulu, N.; Tsingelis, M. 2 2008 Ordered semigroups having the \(P\)-property. Zbl 1178.06010Kehayopulu, N.; Tsingelis, M. 1 2008 Weakly prime and prime fuzzy ideals in ordered semigroups. Zbl 1143.06006Kehayopulu, Niovi 4 2007 Green’s relations in ordered groupoids in terms of fuzzy subsets. Zbl 1144.06007Kehayopulu, Niovi; Tsingelis, Michael 3 2007 Band congruences in ordered semigroups. Zbl 1156.06008Kehayopulu, Niovi; Tsingelis, Michael 2 2007 On fuzzy ordered groupoids-semigroups. Zbl 1135.06011Kehayopulu, Niovi; Tsingelis, Michael 2 2007 Fuzzy ideals in ordered semigroups. Zbl 1142.06004Kehayopulu, Niovi; Tsingelis, Michael 2 2007 Regular ordered semigroups in terms of fuzzy subsets. Zbl 1141.06013Kehayopulu, Niovi; Tsingelis, Michael 25 2006 Fuzzy interior ideals in ordered semigroups. Zbl 1120.06013Kehayopulu, Niovi; Tsingelis, Michael 7 2006 Ideals and Green’s relations in ordered semigroups. Zbl 1121.06014Kehayopulu, Niovi 5 2006 Left regular and intra-regular ordered semigroups in terms of fuzzy subsets. Zbl 1125.06011Kehayopulu, Niovi; Tsingelis, Michael 3 2006 Decomposition of commutative ordered semigroups into archimedean components. Zbl 1120.06014Kehayopulu, Niovi; Tsingelis, Michael 1 2006 Fuzzy bi-ideals in ordered semigroups. Zbl 1080.06021Kehayopulu, Niovi; Tsingelis, Michael 28 2005 Retract extensions of ordered sets. Zbl 1074.06001Kehayopulu, N.; Ponizovskij, J. S.; Shum, K. P. 1 2005 \(m\)-systems and \(n\)-systems in ordered semigroups. Zbl 1050.06009Kehayopulu, Niovi 2 2004 Ideal extensions of ordered sets. Zbl 1079.06003Kehayopulu, Niovi 1 2004 The embedding of an ordered groupoid into a poe-groupoid in terms of fuzzy sets. Zbl 1039.06006Kehayopulu, Niovi; Tsingelis, Michael 17 2003 Ideal extensions of ordered semigroups. Zbl 1028.06010Kehayopulu, Niovi; Tsingelis, Michael 11 2003 On semigroups which are groups. Zbl 1047.20048Kehayopulu, Niovi; Tsingelis, Michael 2 2003 A note on maximal ideals in ordered semigroups. Zbl 1035.06003Kehayopulu, N.; Ponizovskii, J.; Tsingelis, M. 1 2003 Equivalent extensions of ordered sets. Zbl 1050.06002Kehayopulu, N.; Shum, K. P. 1 2003 Fuzzy sets in ordered groupoids. Zbl 1006.06008Kehayopulu, Niovi; Tsingelis, Michael 48 2002 On left regular ordered semigroups. Zbl 1006.06007Kehayopulu, Niovi; Tsingelis, Michael 5 2002 A note on minimal and maximal ideals of ordered semigroups. Zbl 1015.06015Arslanov, M.; Kehayopulu, N. 5 2002 A characterization of prime and semiprime ideals of groupoids in terms of fuzzy subsets. Zbl 0999.20057Kehayopulu, Niovi; Xie, Xiang-Yun; Tsingelis, Michael 7 2001 The embedding of some ordered semigroups into ordered groups. Zbl 0960.06008Kehayopulu, Niovi; Tsingelis, Michael 3 2000 A note on semilattice congruences in ordered semigroups. Zbl 0976.06009Kehayopulu, N.; Tsingelis, M. 3 2000 A note on fuzzy sets of groupoids-semigroups. Zbl 0966.06019Kehayopulu, Niovi; Tsingelis, Michael 3 2000 Congruences in ordered semigroups. Zbl 0994.06007Kehayopulu, N.; Tsingelis, M. 2 2000 Characterizations of 0-simple ordered semigroups. Zbl 0971.06012Kehayopulu, Niovi; Tsingelis, Michael 1 2000 A note on ordered groupoids-semigroups. Zbl 0966.06020Kehayopulu, Niovi; Tsingelis, Michael 1 2000 A note on fuzzy sets in semigroups. Zbl 0960.20040Kehayopulu, Niovi; Tsingelis, Michael 7 1999 Note on interior ideals, ideal elements in ordered semigroups. Zbl 0962.06016Kehayopulu, Niovi 3 1999 On completely regular ordered semigroups. Zbl 0905.06011Kehayopulu, Niovi 14 1998 A note on strongly regular ordered semigroups. Zbl 0905.06012Kehayopulu, Niovi 5 1998 On weakly commutative ordered semigroups. Zbl 0890.06010Kehayopulu, Niovi; Tsingelis, Michael 4 1998 On separative ordered semigroups. Zbl 0979.06008Kehayopulu, Niovi; Tsingelis, Michael 2 1998 A characterization of strongly regular ordered semigroups. Zbl 0932.06011Kehayopulu, Niovi; Tsingelis, Michael 1 1998 On right regular and right duo \(poe\)-semigroups. Zbl 0903.06012Kehayopulu, Niovi; Lepouras, George 1 1998 On intra-regular ordered semigroups. Zbl 0906.06011Kehayopulu, Niovi; Tsingelis, Michael 1 1998 On regular orderd semigroups. Zbl 0895.06009Kehayopulu, Niovi 13 1997 On right regular and right duo ordered semigroups. Zbl 0890.06009Kehayopulu, Niovi; Lepouras, George; Tsingelis, Michael 2 1997 A note on filters in ordered semigroups. Zbl 0902.06023Kehayopulu, Niovi; Lajos, S.; Tsingelis, Michael 2 1997 On normal ordered semigroups. Zbl 0902.06024Kehayopulu, Niovi 1 1997 A note on bi- and quasi-ideals of semigroups, ordered semigroups. Zbl 0902.06022Kehayopulu, N.; Lajos, S.; Lepouras, G. 1 1997 The embedding of an ordered semigroup in a simple one with identity. Zbl 0862.06004Kehayopulu, Niovi; Tsingelis, Michael 3 1996 Remarks on ordered semigroups, semigroups. Zbl 0909.06011Kehayopulu, Niovi 1 1996 On subdirectly irreducible ordered semigroups. Zbl 0823.06010Kehayopulu, Niovi; Tsingelis, Michael 26 1995 Pseudoorder in ordered semigroups. Zbl 0828.06010Kehayopulu, Niovi; Tsingelis, Michael 17 1995 Note on bi-ideals in ordered semigroups. Zbl 0854.06023Kehayopulu, Niovi 2 1995 The chain of right simple semigroups in ordered semigroups. Zbl 0898.06007Kehayopulu, Niovi; Ponizovskij, J. S. 1 1995 On regular, regular duo ordered semigroups. Zbl 0837.06010Kehayopulu, Niovi 3 1994 On regular le-semigroups. Zbl 0811.06014Kehayopulu, Niovi 3 1994 On intra-regular ordered semigroups. Zbl 0776.06013Kehayopulu, Niovi 33 1993 On semilattices of simple poe-semigroups. Zbl 0764.06007Kehayopulu, Niovi 13 1993 On regular, intra-regular ordered semigroups. Zbl 0813.06013Kehayopulu, Niovi 8 1993 On the decomposition of prime ideals of ordered semigroups into their \(\mathcal N\)-classes. Zbl 0782.06013Kehayopulu, Niovi; Tsingelis, Michael 8 1993 ...and 30 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 152 Authors 72 Kehayopulu, Niovi 26 Tsingelis, Michael 20 Davvaz, Bijan 15 Khan, Asghar 13 Tang, Jian 11 Khan, Noor Mohammad 10 Xie, Xiang-Yun 8 Abbasi, Mohammad Yahya 8 Basar, Abul 8 Mahboob, Ahsan 8 Shabir, Muhammad 7 Hila, Kostaq 5 Cao, Yonglin 5 Jun, Young Bae 5 Omidi, Saber 4 Gu, Ze 4 Kausar, Nasreen 4 Khan, Faiz Muhammad 4 Luo, Yan Feng 3 Abdullah, Saleem 3 Ali Khan, Muhammad Sajjad 3 Bhuniya, Anjan Kumar 3 Iampan, Aiyared 3 Khan, Sabahat Ali 3 Munir, Mohammad 3 Salam, Abdus 3 Yaqoob, Naveed 3 Zhao, Bin 2 Ali, Md. Firoj 2 Ali, Muhammad Irfan 2 Anjum, Rukhshanda 2 Changphas, Thawhat 2 Chinram, Ronnason 2 Hansda, Kalyan 2 Huang, Xiaokun 2 Jakubíková-Studenovská, Danica 2 Kazancı, Osman 2 Khan, Hidayatullah 2 Khan, Mohammad Aasim 2 Khan, Raees 2 Lekkoksung, Nareupanat 2 Lekkoksung, Somsak 2 Li, Qingguo 2 Movsisyan, Yuri Movses 2 Pal, Pavel 2 Petchkaew, Pattarawan 2 Petrík, Milan 2 Pibaljommee, Bundit 2 Ponizovskiĭ, Iosif Solomonovich 2 Rao, S. Hanumantha 2 Sardar, Sujit Kumar 2 Sarmin, Nor Haniza 2 Shi, Xiaoping 2 Tang, Xilin 2 Vetterlein, Thomas 2 Yolchyan, M. A. 2 Yufeng, Nie 1 Addis, Gezahagne Mulat 1 Alaba, Berhanu Assaye 1 Alesemi, Meshari 1 Ali, Akbar 1 Bouaziz, Ferdaous 1 Chattopadhyay, Sumanta 1 Chu, Yuming 1 Čipková, Karla 1 Corsini, Piergiulio 1 Çullhaj, Fabiana 1 Daengsaen, Jukkrit 1 Dehghanian, Mehdi 1 Deng, Fangan 1 Din, Anwarud 1 Elavarasan, Balasubramanian 1 Engidaw, Derso Abeje 1 Feng, Xinyang 1 Feng, Yuming 1 Fritz, Tobias 1 Gaketem, Thiti 1 González, Luciano Javier 1 Gulzar, Muhammad Awais 1 Halaš, Radomír 1 Han, Shengwei 1 Hu, Weiqun 1 Hussain, Azmat 1 Ibrahim, Mohammed Ali Faya 1 Jakubík, Ján 1 Jana, Kanchan 1 Junaid, Muhammad 1 Kadry, Seifedine 1 Kanlaya, Arunothai 1 Kanwal, Rani Sumaira 1 Khan, Bakht Muhammad 1 Khan, Madad 1 Kim, Hee Sik 1 Kiriakuli, P. 1 Krakulli, Anjeza 1 Lee, Kyoung Ja 1 Leeratanavalee, Sorasak 1 Leoreanu-Fotea, Violeta 1 Li, Fang 1 Li, Hongxing ...and 52 more Authors all top 5 Cited in 68 Serials 26 Semigroup Forum 17 Turkish Journal of Mathematics 14 Lobachevskii Journal of Mathematics 11 Information Sciences 7 Communications in Algebra 7 European Journal of Pure and Applied Mathematics 6 Russian Mathematics 6 Journal of Intelligent and Fuzzy Systems 6 AIMS Mathematics 5 Czechoslovak Mathematical Journal 5 Mathematica Slovaca 5 Open Mathematics 4 Computational and Applied Mathematics 4 Afrika Matematika 3 Algebra Universalis 3 Algebra Colloquium 3 Soft Computing 3 Thai Journal of Mathematics 3 Asian-European Journal of Mathematics 3 Armenian Journal of Mathematics 3 Advances in Fuzzy Systems 3 Iranian Journal of Mathematical Sciences and Informatics 3 Palestine Journal of Mathematics 2 Computers & Mathematics with Applications 2 Rocky Mountain Journal of Mathematics 2 Fuzzy Sets and Systems 2 International Journal of Mathematics and Mathematical Sciences 2 Journal of Algebra 2 Kyungpook Mathematical Journal 2 Theoretical Computer Science 2 Journal of Mathematical Sciences (New York) 2 Journal of Applied Mathematics 2 Fuzzy Information and Engineering 2 Algebra 2 Korean Journal of Mathematics 1 Indian Journal of Pure & Applied Mathematics 1 The Journal of the Indian Mathematical Society. New Series 1 European Journal of Combinatorics 1 Order 1 Facta Universitatis. Series Mathematics and Informatics 1 MSCS. Mathematical Structures in Computer Science 1 Journal of Contemporary Mathematical Analysis. Armenian Academy of Sciences 1 Mathematical Logic Quarterly (MLQ) 1 Filomat 1 Honam Mathematical Journal 1 Discrete Dynamics in Nature and Society 1 Journal of Discrete Mathematical Sciences & Cryptography 1 Acta Mathematica Sinica. English Series 1 Applied Sciences 1 Kragujevac Journal of Mathematics 1 JP Journal of Algebra, Number Theory and Applications 1 Hacettepe Journal of Mathematics and Statistics 1 Journal of the Indonesian Mathematical Society 1 Boletim da Sociedade Paranaense de Matemática. Terceira Série 1 New Mathematics and Natural Computation 1 The Journal of Prime Research in Mathematics 1 Applications and Applied Mathematics 1 Science China. Information Sciences 1 Eurasian Mathematical Journal 1 Journal of Applied Mathematics & Informatics 1 Journal of Mathematical Extension 1 Caspian Journal of Mathematical Sciences 1 Carpathian Mathematical Publications 1 Problemy Analiza. Issues of Analysis 1 Discontinuity, Nonlinearity, and Complexity 1 Categories and General Algebraic Structures with Applications 1 Prikladnaya Diskretnaya Matematika 1 Journal of Algebraic Systems all top 5 Cited in 10 Fields 181 Order, lattices, ordered algebraic structures (06-XX) 119 Group theory and generalizations (20-XX) 14 General algebraic systems (08-XX) 13 Associative rings and algebras (16-XX) 9 Mathematical logic and foundations (03-XX) 3 Category theory; homological algebra (18-XX) 2 Computer science (68-XX) 1 Nonassociative rings and algebras (17-XX) 1 Topological groups, Lie groups (22-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Citations by Year