C^n sections #
In this file we define the type ContMDiffSection of n times continuously differentiable
sections of a vector bundle over a manifold M and prove that it's a module over the base field.
In passing, we prove that binary and finite sums, differences and scalar products of C^n
sections are C^n.
The scalar product ψ • s of a C^k function ψ : M → 𝕜 and a section s of a vector
bundle V → M is C^k once s is C^k on an open set containing tsupport ψ .
This is a vector bundle analogue of contMDiff_of_tsupport.
The sum of a locally finite collection of sections is C^k iff each section is.
Version at a point within a set.
The sum of a locally finite collection of sections is C^k at x iff each section is.
The sum of a locally finite collection of sections is C^k on a set u iff each section is.
The sum of a locally finite collection of sections is C^k iff each section is.
Bundled n times continuously differentiable sections of a vector bundle.
Denoted as Cₛ^n⟮I; F, V⟯ within the Manifold namespace.
- toFun (x : M) : V x
the underlying function of this section
- contMDiff_toFun : ContMDiff I (I.prod (modelWithCornersSelf 𝕜 F)) n fun (x : M) => Bundle.TotalSpace.mk' F x (self.toFun x)
proof that this section is
C^n
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Bundled n times continuously differentiable sections of a vector bundle.
Denoted as Cₛ^n⟮I; F, V⟯ within the Manifold namespace.
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The additive morphism from C^n sections to dependent maps.