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Название: Theory and applications of general topology
Автор: Lipschutz S.
Genera] topology, also called point set topology, has recently become an essential part of the mathematical background of both graduate and undergraduate students. This book is designed to be used either as a textbook for a formal course in topology or as a supplement to all current standard texts. It should also be of considerable value as a source and reference book for those who require a comprehensive and rigorous introduction to the subject.