This book is an introduction to elementary topology presented in an intuitive way, emphasizing the visual aspect. Examples of nontrivial and often unexpected to

Topology is a relatively young and very important branch of mathematics, which studies the properties of objects that are preserved through deformations, twisti

Classroom-tested and much-cited, this concise text is designed for undergraduates. It offers a valuable and instructive introduction to the basic concepts of to

The single most difficult thing one faces when one begins to learn a new branch of mathematics is to get a feel for the mathematical sense of the subject. The p

This text contains a detailed introduction to general topology and an introduction to algebraic topology via its most classical and elementary segment. Proofs o