The Constraint Satisfaction Problem over an algebra A is solvable by the basic linear programming relaxation if, and only if, A has a fully symmetric term operation of every arity. It is, however, unclear how to decide that the latter condition is satisfied for a given algebra. The goal of the thesis is make a progress toward answering this decidability question.
Seznam odborné literatury
L. Barto, J. Bulin, A. Krokhin, J. Oprsal, Algebraic approach to promise constraint satisfaction, Journal of the ACM 68/4 (2021), 1-66
L. Barto, A. Krokhin, R. Willard, Polymorphisms, and how to use them, in "The Constraint Satisfaction Problem: Complexity and Approximability", Dagstuhl Follow-Ups, vol. 7, 1–44, 2017