On Some Classes of Operators on C(K,X)
Ioana Ghenciu
Bulletin of the Polish Academy of Sciences. Mathematics, Tome 63 (2015), p. 261-274 / Harvested from The Polish Digital Mathematics Library

Suppose X and Y are Banach spaces, K is a compact Hausdorff space, Σ is the σ-algebra of Borel subsets of K, C(K,X) is the Banach space of all continuous X-valued functions (with the supremum norm), and T:C(K,X) → Y is a strongly bounded operator with representing measure m:Σ → L(X,Y). We show that if T is a strongly bounded operator and T̂:B(K,X) → Y is its extension, then T is limited if and only if its extension T̂ is limited, and that T* is completely continuous (resp. unconditionally converging) if and only if T̂* is completely continuous (resp. unconditionally converging). We prove that if K is a dispersed compact Hausdorff space and T is a strongly bounded operator, then T is limited (resp. weakly precompact, has a completely continuous adjoint, has an unconditionally converging adjoint) whenever m(A):X → Y is limited (resp. weakly precompact, has a completely continuous adjoint, has an unconditionally converging adjoint) for each A ∈ Σ.

Publié le : 2015-01-01
EUDML-ID : urn:eudml:doc:281265
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     author = {Ioana Ghenciu},
     title = {On Some Classes of Operators on C(K,X)},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     volume = {63},
     year = {2015},
     pages = {261-274},
     zbl = {06545372},
     language = {en},
     url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba7997-1-2016}
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Ioana Ghenciu. On Some Classes of Operators on C(K,X). Bulletin of the Polish Academy of Sciences. Mathematics, Tome 63 (2015) pp. 261-274. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba7997-1-2016/