On combinatorial properties of the semigroups of the fourth order
In this paper we study combinatorial semigroups of order 4 (up to isomorphism and duality, their number is 126).
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
State University “Uzhhorod National University”
2017-06-01
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| Series: | Науковий вісник Ужгородського університету. Серія: Математика і інформатика |
| Online Access: | http://visnyk-math.uzhnu.edu.ua/article/view/144030 |