. . "Three types of normal forms are introduced for fuzzy logic functions: disjunctive, conjunctive and additive. Disjunctive and conjunctive normal forms are considered in two variants: infinite and finite. It is shown that infinite normal forms are univ ersal representation formulas whereas finite normal forms are universal approximation formulas for any $L$-valued function where $L$ is a support set of any complete BL-algebra. The additive normal form ``lies'' in the middle of the two others. For a ll of them the estimation of the quality of approximation is suggested."@en . "Three types of normal forms are introduced for fuzzy logic functions: disjunctive, conjunctive and additive. Disjunctive and conjunctive normal forms are considered in two variants: infinite and finite. It is shown that infinite normal forms are univ ersal representation formulas whereas finite normal forms are universal approximation formulas for any $L$-valued function where $L$ is a support set of any complete BL-algebra. The additive normal form ``lies'' in the middle of the two others. For a ll of them the estimation of the quality of approximation is suggested." . "1"^^ . . . "0"^^ . "Proc. Internat. Conf. on Fuzzy Information Processing. Theories and Applic." . "1"^^ . "0"^^ . . . "2003-03-01+01:00"^^ . "Representation of Fuzzy Logic Functions by Normal Forms"@en . "625312" . . "RIV/61988987:17310/03:00000068!RIV/2004/AV0/173104/N" . "17310" . . . "Representation of Fuzzy Logic Functions by Normal Forms" . "RIV/61988987:17310/03:00000068" . "65-70" . "6"^^ . "Representation of Fuzzy Logic Functions by Normal Forms"@en . . . . . "[D1E3D1B26FE5]" . . "Representation of Fuzzy Logic Functions by Normal Forms" . "Tsinghua University, Beijing, China" . "7-302-06299-4" . . "Beijing, China" . "Tsinghua University Press, Springer" . . "Perfilieva, Irina" . . "Disjunctive; conjunctive and additive; normal forms; universal approximation"@en . "P(IAA1187301), P(ME 702)" . .