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Information × Registration Number 0206U002288, 0104U000636 , R & D reports Title The restrictions for normal subgroups in groups and the abstract convergences in topological spaces. popup.stage_title Head Lyman Fedir Mycolayovych, Доктор фізико-математичних наук Registration Date 02-02-2006 Organization Sumy State Pedagogical University named by Makarenko popup.description2 It's oftained properties of infinite groups with restrictions for systems of subgroups and for norms and normalizes of these systems. We study properties of star convergences of mixed types. We investigated the problem of optimal codification of classes of surfaces, which are given with the help of the module of continuity. Product Description popup.authors popup.nrat_date 2020-04-02 Close