Geodesic
On zigzag De Morgan functions
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2014), pp. 3-6

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There are five precomplete classes of De Morgan functions, four of them are defined as sets of functions preserving some finitary relations. However, the fifth class – the class of zigzag De Morgan functions, is not defined by relations. In this paper we announce the following result: zigzag De Morgan functions can be defined as functions preserving some finitary relation.
Keywords: disjunctive (conjunctive) normal form of De Morgan function, closed and complete classes, quasimonotone and zigzag De Morgan functions. 
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V. A. Aslanyan. On zigzag De Morgan functions. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2014), pp. 3-6. http://geodesic.mathdoc.fr/item/UZERU_2014_1_a0/