|
|
|
|
Литература
|
|
| |
| 1. |
Birkhoff G., Lattice theory, Amer. Math. Soc. Coll. Publ., XXV, Providence, R.I, 1967 |
| 2. |
Kehayopulu N., Tsingelis M., “On subdirectly irreducible ordered semigroups”, Semigroup Forum, 50 (1995), 161–177    |
| 3. |
Kehayopulu N., “On ordered semigroups without nilpotent ideal elements”, Math. Japonica, 36:2 (1991), 323–326 |
| 4. |
Kehayopulu N., Tsingelis M., “Characterizations of $0$-simple ordered semigroups”, Sci. Math., 3:2 (2000), 311–314 |
| 5. |
Cao Yonglin, “Quotient principal factors of an ordered semigroup”, Comm. Algebra, 29:5 (2001), 1993–2001 |
| 6. |
Kehayopulu N., “On intra-regular ordered semigroups”, Semigroup Forum, 46 (1993), 271–278 |
