Theorems · Theorem · global analysis

contMDiffAt_iff_source

∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_2} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {H : Type u_3} [inst_3 : TopologicalSpace H] {I : ModelWithCorners 𝕜 E H} {M : Type u_4}
  [inst_4 : TopologicalSpace M] [inst_5 : ChartedSpace H M] {E' : Type u_5} [inst_6 : NormedAddCommGroup E']
  [inst_7 : NormedSpace 𝕜 E'] {H' : Type u_6} [inst_8 : TopologicalSpace H'] {I' : ModelWithCorners 𝕜 E' H'}
  {M' : Type u_7} [inst_9 : TopologicalSpace M'] [inst_10 : ChartedSpace H' M'] {f : M → M'} {x : M} {n : WithTop ℕ∞},
  ContMDiffAt I I' n f x ↔
    ContMDiffWithinAt (modelWithCornersSelf 𝕜 E) I' n (f ∘ ↑(extChartAt I x).symm) (Set.range ↑I) (↑(extChartAt I x) x)

One can reformulate being Cⁿ at a point as being Cⁿ in the source space when composing with the extended chart.

Defined in

Mathlib.Geometry.Manifold.ContMDiff.Defs

Cited by

1 results in Mathlib

Foundations

Depth 176 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

NontriviallyNormedFieldNormedAddCommGroupNormedSpaceTopologicalSpaceTopologicalSpaceChartedSpaceNormedAddCommGroupNormedSpaceTopologicalSpaceTopologicalSpaceChartedSpace