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Theorems · Definition · algebraic topology

homotopyGroupEquivZerothHomotopyOfIsEmpty

{X : Type u_2} →
  [inst : TopologicalSpace X] → (N : Type u_3) → (x : X) → [IsEmpty N] → HomotopyGroup N X x ≃ ZerothHomotopy X

The homotopy "group" indexed by an empty type is in bijection with the path components of X, aka the ZerothHomotopy.

Defined in
Mathlib.Topology.Homotopy.HomotopyGroup
Cited by
0 results in Mathlib
Foundations
Depth 162 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
TopologicalSpaceIsEmpty

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