Homs of C^n
vector bundles over the same base space #
Here we show that the bundle of continuous linear maps is a C^n
vector bundle. We also show
that applying a smooth family of linear maps to a smooth family of vectors gives a smooth
result, in several versions.
Note that we only do this for bundles of linear maps, not for bundles of arbitrary semilinear maps.
Indeed, semilinear maps are typically not smooth. For instance, complex conjugation is not
ℂ
-differentiable.
Alias of contMDiffAt_hom_bundle
.
Alias of Bundle.ContinuousLinearMap.vectorPrebundle.isContMDiff
.
Consider a C^n
map v : M → E₁
to a vector bundle, over a base map b₁ : M → B₁
, and
another base map b₂ : M → B₂
. Given linear maps ϕ m : E₁ (b₁ m) → E₂ (b₂ m)
depending smoothly
on m
, one can apply ϕ m
to g m
, and the resulting map is C^n
.
Note that the smoothness of ϕ
can not be always be stated as smoothness of a map into a manifold,
as the pullback bundles b₁ *ᵖ E₁
and b₂ *ᵖ E₂
are smooth manifolds only when b₁
and b₂
are
globally smooth, but we want to apply this lemma with only local information. Therefore, we
formulate it using smoothness of ϕ
read in coordinates.
Version for ContMDiffWithinAt
. We also give a version for ContMDiffAt
, but no version for
ContMDiffOn
or ContMDiff
as our assumption, written in coordinates, only makes sense around
a point.
For a version with B₁ = B₂
and b₁ = b₂
, in which smoothness can be expressed without
inCoordinates
, see ContMDiffWithinAt.clm_bundle_apply
Consider a C^n
map v : M → E₁
to a vector bundle, over a base map b₁ : M → B₁
, and
another base map b₂ : M → B₂
. Given linear maps ϕ m : E₁ (b₁ m) → E₂ (b₂ m)
depending smoothly
on m
, one can apply ϕ m
to g m
, and the resulting map is C^n
.
Note that the smoothness of ϕ
can not be always be stated as smoothness of a map into a manifold,
as the pullback bundles b₁ *ᵖ E₁
and b₂ *ᵖ E₂
are smooth manifolds only when b₁
and b₂
are
globally smooth, but we want to apply this lemma with only local information. Therefore, we
formulate it using smoothness of ϕ
read in coordinates.
Version for ContMDiffAt
. We also give a version for ContMDiffWithinAt
, but no version for
ContMDiffOn
or ContMDiff
as our assumption, written in coordinates, only makes sense around
a point.
For a version with B₁ = B₂
and b₁ = b₂
, in which smoothness can be expressed without
inCoordinates
, see ContMDiffAt.clm_bundle_apply
Consider a C^n
map v : M → E₁
to a vector bundle, over a base map b : M → B
, and
linear maps ϕ m : E₁ (b m) → E₂ (b m)
depending smoothly on m
.
One can apply ϕ m
to v m
, and the resulting map is C^n
.
We give here a version of this statement within a set at a point.
Consider a C^n
map v : M → E₁
to a vector bundle, over a base map b : M → B
, and
linear maps ϕ m : E₁ (b m) → E₂ (b m)
depending smoothly on m
.
One can apply ϕ m
to v m
, and the resulting map is C^n
.
We give here a version of this statement at a point.
Consider a C^n
map v : M → E₁
to a vector bundle, over a base map b : M → B
, and
linear maps ϕ m : E₁ (b m) → E₂ (b m)
depending smoothly on m
.
One can apply ϕ m
to v m
, and the resulting map is C^n
.
We give here a version of this statement on a set.
Consider a C^n
map v : M → E₁
to a vector bundle, over a base map b : M → B
, and
linear maps ϕ m : E₁ (b m) → E₂ (b m)
depending smoothly on m
.
One can apply ϕ m
to v m
, and the resulting map is C^n
.
Consider C^n
maps v : M → E₁
and v : M → E₂
to vector bundles, over a base map
b : M → B
, and bilinear maps ψ m : E₁ (b m) → E₂ (b m) → E₃ (b m)
depending smoothly on m
.
One can apply ψ m
to v m
and w m
, and the resulting map is C^n
.
We give here a version of this statement within a set at a point.
Consider C^n
maps v : M → E₁
and v : M → E₂
to vector bundles, over a base map
b : M → B
, and bilinear maps ψ m : E₁ (b m) → E₂ (b m) → E₃ (b m)
depending smoothly on m
.
One can apply ψ m
to v m
and w m
, and the resulting map is C^n
.
We give here a version of this statement at a point.
Consider C^n
maps v : M → E₁
and v : M → E₂
to vector bundles, over a base map
b : M → B
, and bilinear maps ψ m : E₁ (b m) → E₂ (b m) → E₃ (b m)
depending smoothly on m
.
One can apply ψ m
to v m
and w m
, and the resulting map is C^n
.
We give here a version of this statement on a set.
Consider C^n
maps v : M → E₁
and v : M → E₂
to vector bundles, over a base map
b : M → B
, and bilinear maps ψ m : E₁ (b m) → E₂ (b m) → E₃ (b m)
depending smoothly on m
.
One can apply ψ m
to v m
and w m
, and the resulting map is C^n
.