Abstract
We characterize those continuously-normed Banach bundles E → X with compact Hausdorff base whose spaces Γ(E) of global continuous sections are topologically finitely-generated over the function algebra C(X), answering a question of I. Gogić and extending analogous work for metrizable X. Conditions equivalent to topological finite generation include: (a) the requirement that E be locally trivial and of finite type along locally closed and relatively Fσ strata in a finite stratification of X; (b) the decomposability of arbitrary elements in ℓp(Γ(E)), 1 ≤ p < ∞ as sums of ≤ N products in ℓp(C(X)) · Γ(E) for some fixed N; (c) the analogous decomposability requirement for maximal Banach-module tensor products F ⊗ C(X)Γ(E) or (d) equivalently, only for F = ℓ1(C(X)).
| Original language | English |
|---|---|
| Pages (from-to) | 3907-3920 |
| Number of pages | 14 |
| Journal | Proceedings of the American Mathematical Society |
| Volume | 153 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2025 |
Keywords
- Banach bundle
- Banach module
- Fσ set
- G set
- Hilbert bundle
- Hilbert module
- convex module
- finitely-generated
- metric space
- non-degenerate
- paracompact
- projective tensor product
- section
- semicontinuous
- sheaf
- stratification
- ℓ-sum
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