Theory of space polarisation, discussion.
The article makes a survey of aspects for evaluation of a periphery in geographic sciences. The definition of the terms "periphery" and "marginality" is discussed. An attention is paid to evaluation aspects and types of polarities defining peripheries. A periphery is understood as a consequence of an asymmetry in organization of a territory, a society, etc. The article takes into account the development of the relation core/centre - periphery and, in their delimitation, differentiates the objective and the subjective viewpoints. Determining factors and actors' behaviour in the framework of the development of peripheries, or their individual types, are observed.