Topic: The Fundamental Group

Homotopy Equivalences Induce Isomorphisms

Homeomorphism Invariance of the Fundamental Group

Fundamental Groups of Points and Discrete Spaces

Fundamental Group Proofs: Common Errors and Worked Checks

Fundamental Groups of Convex Spaces

Equivalence Classes of Based Loops

Deformation Retracts and Fundamental Group Computations

Defining the Fundamental Group

Contracting Loops While Fixing the Base Point

Contractible Spaces Have Trivial Fundamental Groups