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Displaying similar documents to “Range of density measures”

On density theorems for outer measures

E. J. Mickle, T. Rado

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CONTENTSINTRODUCTION................................................................................... 3SECTION 1. Covering theorems........................................................... 5SECTION 2. Absolutely measurable sets.............................................. 8SECTION 3. Generalized spherical Hausdorff measures.................... 14SECTION 4. Density theorems for subadditive set functions............... 20SECTION 5. A density theorem for outer measures...............................

Exposed points in the set of representing measures for the disc algebra

Alexander J. Izzo (1995)

Annales Polonici Mathematici

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It is shown that for each nonzero point x in the open unit disc D, there is a measure whose support is exactly ∂D ∪ {x} and that is also a weak*-exposed point in the set of representing measures for the origin on the disc algebra. This yields a negative answer to a question raised by John Ryff.

On a one-dimensional analogue of the Smale horseshoe

Ryszard Rudnicki (1991)

Annales Polonici Mathematici

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We construct a transformation T:[0,1] → [0,1] having the following properties: 1) (T,|·|) is completely mixing, where |·| is Lebesgue measure, 2) for every f∈ L¹ with ∫fdx = 1 and φ ∈ C[0,1] we have φ ( T n x ) f ( x ) d x φ d μ , where μ is the cylinder measure on the standard Cantor set, 3) if φ ∈ C[0,1] then n - 1 i = 0 n - 1 φ ( T i x ) φ d μ for Lebesgue-a.e. x.

Representing measures for the disc algebra and for the ball algebra

Raymond Brummelhuis, Jan Wiegerinck (1991)

Annales Polonici Mathematici

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We consider the set of representing measures at 0 for the disc and the ball algebra. The structure of the extreme elements of these sets is investigated. We give particular attention to representing measures for the 2-ball algebra which arise by lifting representing measures for the disc algebra.