O. Ya. Viro, O. A. Ivanov, N. Yu. Netsvetaev, V. M. Kharlamov, "Elementary Topology Problem Textbook"
Pages: 415 | Unofficial Book | English | PDF | 2.6 MB
The core of the book is the material of the course of topology for students major in Mathematics at the Saint Petersburg (Leningrad) State University. The material is relatively small and involves nearly no complicated arguments.