This article covers the necessity of use geoinformation systems for forecasting and recognizing crisis situations in agriculture. The method creation thematic maps was offered as a tool by authors article, three were obtained functional zoning indicators of: financial state agricultural production, ecological expressed monetary equivalent forecast states given proved within boundaries 121 villa...

Given a regular language L, we effectively construct unary semigroup that recognizes the topological closure of L in free relative to variety semigroups generated by pseudovariety R all finite R-trivial semigroups. In particular, obtain new effective solution separation problem languages R-languages.