This work is devoted to the investigation of the basic relationship between the geometric shape of a convex set and measure theoretic properties of the associated curvature and surface area measures. We study geometric consequences of and conditions for absolute continuity of curvature and surface a
Absolute Continuity and Zero-Sets
โ Scribed by William D. L. Appling
- Publisher
- John Wiley and Sons
- Year
- 1968
- Tongue
- English
- Weight
- 349 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
โฆ Synopsis
Theorem K. If H i s u reul-valued function on S szcch that j R H ( I ) exists, then
Suppose that each of u, b, c, and d is a nonnegative number and 0 < p < 1.
We see that
This implies that if each of f and g is in U and each of P and F' is a refinement of the subdivision E of the set V of S , then 5 zl? min (f(I), g ( l ) ) 5 zE min (f(I), g ( I ) )
5 z E f (I)" g(l)l-" 5 zE max {f(I), g('))
5 23) max {f (4, g (41 5 f( V ) + 9( v
๐ SIMILAR VOLUMES
Let us denote by C p ( K , .), r E {O,. . . , d -1)1 the curvature measures of a convex body K in the Euclidean space Ed with d 1. 2. According to Lebesgue's decomposition theorem the curvature measure of order r of K, C,(K, s), can be written as the sum of an absolutely continuous measure, C:(K, .)
We prove that in any dimension a variational measure associated with an additive continuous function is ฯ-finite whenever it is absolutely continuous. The one-dimensional version of our result was obtained in [1] by a different technique. As an application, we establish a simple and transparent rela
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