English
If E is a real-vector-space with a locally convex structure and compatible topology, then E is locally path connected.
Русский
Если E — вещественный векторное пространство с локально выпуклой структурой и совместимой топологией, то E локально путево связно.
LaTeX
$$$\text{LocPathConnectedSpace } E$ (given $E$ is a locally convex real space with appropriate module structure)$$
Lean4
instance (priority := 100) toLocPathConnectedSpace [Module ℝ E] [ContinuousSMul ℝ E] [LocallyConvexSpace ℝ E] :
LocPathConnectedSpace E :=
.of_bases (fun x ↦ convex_basis (𝕜 := ℝ) x) fun _ _ hs ↦
hs.2.isPathConnected <| nonempty_of_mem <| mem_of_mem_nhds hs.1