Definition:Homotopy Class/Path

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Definition

Let $T = \struct {S, \tau}$ be a topological space.

Let $f: \closedint 0 1 \to S$ be a path in $T$.


The homotopy class of the path $f$ is the homotopy class of $f$ relative to $\set {0, 1}$.


That is, the equivalence class of $f$ under the equivalence relation defined by path-homotopy.


Also see