Industrial Automatic Control Systems and Controllers Annotation << Back The Algorithm of Lowering Pairs Finding for Functions Without Prohibition of Four Variables M.I. Rozhkov S.S. Khrustalev In the work we consider the new algorithm of lowering pairs fi nding for functions without prohibition of four variables. Lowering (or restrictive) pairs of natural numbers (h,t), h > t for functions without prohibition was studied earlier in connection with the construction of bijective mappings Bf,L defi ned by the shift register of length n with feedback function L, essentially dependent on a limited number of initial and fi nal arguments, and a nonlinear function of removal of k arguments (k< Keywords: orthogonal system of Boolean functions; feedback shift register; fi lter generator; restrictive multitude; lowering pairs. Contacts: E-mail: rozhkov.m.i@yandex.ru, E-mail: sergeixr@mail.ru Pp. 48-54.