Topology is often called "rubber-sheet geometry" because it focuses on properties that remain unchanged even when an object is stretched or deformed. Studying Long’s text helps you understand: Lecture Notes On General Topology
, which allows users to borrow the digital PDF or view it online. Alternatively, the book's metadata and limited previews are available through Google Books Open Library Core Concepts and Structure an introduction to general topology paul e long pdf link
: An article focusing on the "language" of mathematics and set-theoretic topology. An introduction to general topology : Long, Paul E Topology is often called "rubber-sheet geometry" because it