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math.FA2011
Products of non-sigma-lower porous sets
Martin Rmoutil
It has been known that the Cartesian product of two Suslin non-sigma-porous sets in topologically complete metric spaces is non-sigma-porous in the product space. The main aim of t…
math.FA2011★ 4 cited
Sigma-porosity is separably determined
Marek Cúth, Martin Rmoutil
We prove a separable reduction theorem for sigma-porosity of Suslin sets. In particular, if A is a Suslin subset in a Banach space X, then each separable subspace of X can be enlar…