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0:01:09

Solid torus without k points homotopy equivalence

0:01:25

Sphere with 2 points identified homotopy equivalence

0:00:53

Bouquet of circles and sphere with k punctures homotopy equivalence

0:00:43

Bouquet of circles and plane with k punctures homotopy equivalence

0:00:48

Circle and punctured plane homotopy equivalence

0:01:01

Covering space of a cylinder

0:01:25

Covering space of S¹ (covering map ℝ → S¹)

0:01:33

Union of 2 solid tori (S¹ × S²)

0:00:39

Punctured plane and cylinder homeomorphism

0:00:33

Sphere as the quotient space of a disk

0:00:26

Punctured Möbius strip homeomorphism

0:00:54

Domino tilings of squares | MegaFavNumbers

0:00:17

Punctured torus homeomorphism