Mathematics – Functional Analysis
Scientific paper
1992-05-11
Arch. Math. 61, (1993), 183-200
Mathematics
Functional Analysis
Scientific paper
If $\phi$ is a submeasure satisfying an appropriate lower estimate we give a quantitative result on the total mass of a measure $\mu$ satisfying $0\le\mu\le\phi.$ We give a dual result for supermeasures and then use these results to investigate convexity on non-locally convex quasi-Banach lattices. We then show how to use these results to extend some factorization theorems due to Pisier to the setting of quasi-Banach spaces. We conclude by showing that if $X$ is a quasi-Banach space of cotype two then any operator $T:C(\Omega)\to X$ is 2-absolutely summing and factors through a Hilbert space and discussing general factorization theorems for cotype two spaces.
Kalton Nigel J.
Montgomery-Smith Stephen J.
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