Abstract
In this paper we consider decision-making problems in a fuzzy environment in which goals and constraints are fuzzy sets in the different spaces. Fundamentally we discuss uncertain problems in which the mathematical model is not defined precisely.Therefore our problem is to select a proper methematical model of a given problem and then to find the solution of the problem in the selected model. We illustrate some applications of a method of systems analysis based on the fuzzy sets theory to the types of humanly-perceived systems whose constrains and goals are subjectively perceived.
