How statement and proof provenance work
The first chip identifies the source of the statement or construction; the second identifies the source of its local proof or verification.
- Literature-sourced: the exact statement appears in a cited source; only wording and notation differ.
- AI-adapted: a semantically identical restatement of literature-sourced material, modulo indexing, notation, and boundary cases adopted by the library.
- AI-generated: a genuinely novel statement formulated by AI, with no source for the claim itself.
These labels describe origin, not correctness: citations and verification chips remain separate evidence.
Local and global frames of a vector bundle
Definition
Let be a smooth rank- vector bundle and let be open.
A tuple of smooth local sections on is a local frame when, for every , the vectors form a basis of the fibre .
When , the same data are called a global frame.
Depends on
Used by
- A vector bundle is trivial if and only if it has a global frame Corollary
- A closed manifold with formally plausible rank data needs positive codimension Counterexample
- Connection one form in a local frame Definition
- Gauss frame map of an immersion into Euclidean space Definition
- Holomorphic line bundles and meromorphic sections on a Riemann surface Definition
- Nondegenerate zero of a vector field Definition
- The holomorphic line bundle associated to a divisor Definition
- Vector subbundles Definition
- An open parallelizable manifold immerses in Euclidean space of equal dimension Example
- Parallelizable tori have trivial stable normal class Example
- The normal line of an oriented hypersurface is trivial Example
- The tautological line bundle over real projective space Example
- Every vector in a fibre extends to a compactly supported smooth section Lemma
- Formal immersions of the circle in the plane are classified by the winding number Lemma
- The pullback of a trivial smooth vector bundle is canonically trivial Lemma
- A smooth distribution is exactly a locally framed constant-rank family of tangent spaces Proposition
- Local frames and local trivializations are equivalent data Proposition
- Smoothness of a bundle map is equivalent to smooth local matrices Proposition
- Smoothness of a section is equivalent to smooth local components Proposition
- A flat connection admits local parallel frames Theorem
- Chern connection of a Hermitian holomorphic line bundle Theorem
- Every smooth vector bundle admits a smooth bundle metric Theorem
- The map defined by a base-point-free linear system Theorem
Dependency tree · two levels
15 results within two dependency steps of this one, each drawn at its shortest distance from it. An arrow runs from a result to what uses it, so the chart reads left to right and ends at this result, which carries a heavier outline. Every node is a link to that result. Click elsewhere on the chart to enlarge it.
Sources
- John M. Lee, Introduction to Smooth Manifolds (standard reference, not scraped)
- Will J. Merry, Differential Geometry (standard reference, not scraped)