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Regular version of the site

Article

Deciding the existence of minority terms

Canadian Mathematical Bulletin. 2020. P. 577-591.
Kazda A., Opršal J., Valeriote M., Zhuk D.

This paper investigates the computational complexity of deciding if a given finite idempotent algebra has a ternary term operation m that satisfies the minority equations m(y,x,x)≈m(x,y,x)≈m(x,x,y)≈y . We show that a common polynomial-time approach to testing for this type of condition will not work in this case and that this decision problem lies in the class NP.