What Is Topology?
An intuitive introduction to topology: open sets, continuity, homeomorphisms, and the properties of spaces that survive continuous deformation.
mathematics · topology · pure-mathematics
Mathematics
Articles and explanations about pure mathematics, including topology, analysis, algebra, geometry, and number theory.
Introduction to Group Theory
A beginner-friendly introduction to groups, subgroups, cyclic groups, permutations, homomorphisms, cosets, and Lagrange's theorem.
mathematics · algebra · group-theory