Topology studies the properties of spaces that remain unchanged under continuous deformation (stretching or twisting, but not tearing).
Highly recommended for beginners due to its clear examples and applications to things like DNA and cryptography. 4. Linear Algebra: Beyond the Matrix higher mathematics books
A fantastic, often free alternative that covers set theory, logic, and various proof techniques with clear, approachable examples. 2. Analysis: The Rigor Behind Calculus Topology studies the properties of spaces that remain