Relation between mathematics and economic activity has a dual character: mathematics feed from economic and social environment through different kinds while economic sciences, including leading science, are mathematized in a fast rhythm. Under the conditions of the dynamic of contemporary economic life, is impossible to have the decisions adopted only by the means of intuition and usual judgment. For this, an important aid is given by mathematic-statistic methods, that is, operational research. Grace of operational research, the usual reasoning, which is always more or less empiric and intuitive, is filled with mathematic reasoning, rigorous, exact. For have an overview over the object of operational research applied in economy, we consider to shortly study in this work, how appeared and developed management and leading branches and also the links between these branches. We also try to put in evidence the role of mathematical modeling in operational research.modeling, operational research, cybernetic, informatics, system analysis
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