Elements of Mathematics
Subtitle: General Topology. Chapters 5-10
Edition: 1st ed. 1989, 2nd printing edition
Publisher: Springer
Published: September 18, 1998
Language: eng
Format: Paperback
Number of pages: 367
ISBN-13: 9783540645634
Subjects: Geometry; Topology; Mathematics; Textbooks; Science/Mathematics; General; Geometry - General; Topology - General; Mathematics / Topology; One-parameter groups; complex numbers; function spaces; real number spaces; real numbers in general topology
First sentence: PROPOSITION I. Every closed subgroup of the additive group R, other than R and { o }, is a discrete group of the form a.Z, where a > o (in other words, it consists of the integer multiples of a).