Sweeping out sectional curvature
نویسندگان
چکیده
منابع مشابه
Sweeping out on a Set of Integers
Let (X, ®, m) be a Lebesgue space, m(X) = 1, and let T be an invertible measurable nonsingular aperiodic transformation of X onto X. If S is a set of r integers, r > 2, then there exists a set A of measure less than /•"' S*_! k~l such that X = U,es T"A. Thus for every infinite set of integers W there exist sets A of arbitrarily small measure such that X = U nniv T"A.
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ژورنال
عنوان ژورنال: Geometry & Topology
سال: 2014
ISSN: 1364-0380,1465-3060
DOI: 10.2140/gt.2014.18.617