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The main concepts of the theory of eutectics are The main concepts of the theory of eutectics are analysed. The most essential results of investigations on eutectic analysed. The most essential results of investigations on eutectic alloys of inorganic compounds are surveyed. Evidence in favour alloys of inorganic compounds are surveyed. Evidence in favour of the supramolecular concept of eutectics is presented. This of the supramolecular concept of eutectics is presented. This concept takes into account interactions of incommensurate sub-concept takes into account interactions of incommensurate substructures and gives an insight into the mechanisms of formation structures and gives an insight into the mechanisms of formation of supramolecular eutectic assemblies in boundary regions (`non-of supramolecular eutectic assemblies in boundary regions (`nonautonomous phases'). Using the static one-dimensional Fren-autonomous phases'). Using the static one-dimensional Frenkel ± Kontorova model for finite systems, it is shown that the kel ± Kontorova model for finite systems, it is shown that the consideration of these mechanisms in terms of supramolecular consideration of these mechanisms in terms of supramolecular chemistry simplifies analysis of the behaviour of inorganic eutectic chemistry simplifies analysis of the behaviour of inorganic eutectic systems in the course of crystallisation under conditions both close systems in the course of crystallisation under conditions both close to and far from equilibrium, including crystallization upon to and far from equilibrium, including crystallization upon quenching and under external actions. The supramolecular con-quenching and under external actions. The supramolecular concept bridges gaps between the definitions `compound', `eutectic' cept bridges gaps between the definitions `compound', `eutectic' and `solution' in physicochemical analysis. The bibliography and `solution' in physicochemical analysis. The bibliography includes 83 references. includes 83 references.

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