LetXbe a completely regular Hausdorff space,EandFbe Banach spaces. LetCb(X,E) be the space of allE-valued bounded, continuous functions onX, equipped with the natural strict topologyβ. We study nuclear operatorsT:Cb(X,E) →Fin terms of their representing operator-valued Borel measures.
Let X be a completely regular Hausdorff space and $$C_b(X)$$
C
b
(
X
)
be the space of all bounded continuous functions on X, equipped with the strict topology $$\beta $$
β
. We study some important classes of $$(\beta ,\Vert \cdot \Vert _E)$$
(
β
,
‖
·
‖
E
)
-continuous linear operators from $$C_b(X)$$
C
b
(
X
)
to a Banach space $$(E,\Vert \cdot \Vert _E)$$
(
E
,
‖
·
‖
E
)
: $$\beta $$
β
-absolutely summing operators, compact operators and $$\beta $$
β
-nuclear operators. We characterize compact operators and $$\beta $$
β
-nuclear operators in terms of their representing measures. It is shown that dominated operators and $$\beta $$
β
-absolutely summing operators $$T:C_b(X)\rightarrow E$$
T
:
C
b
(
X
)
→
E
coincide and if, in particular, E has the Radon–Nikodym property, then $$\beta $$
β
-absolutely summing operators and $$\beta $$
β
-nuclear operators coincide. We generalize the classical theorems of Pietsch, Tong and Uhl concerning the relationships between absolutely summing, dominated, nuclear and compact operators on the Banach space C(X), where X is a compact Hausdorff space.
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