NJ Wildberger AlgTop24: The fundamental group
Homotopy 同伦: When playing skip rope, the 2 ends of the rope are held by 2 persons while a 3rd person jumping over the “swings of rope” – these swings at any instant arehomotopic.
Homotopy
NJ Wildberger AlgTop24: The fundamental group
Homotopy 同伦: When playing skip rope, the 2 ends of the rope are held by 2 persons while a 3rd person jumping over the “swings of rope” – these swings at any instant arehomotopic.
Mathtuition88 