Smoothing theorems for Radon transforms over hypersurfaces and related operators
نویسندگان
چکیده
منابع مشابه
Radon transforms and packings
We use some basic results and ideas from the integral geometry to study certain properties of group codes. The properties being studied are generalized weights and spectra of linear block codes over a finite field and their analogues for lattice sphere packings in Euclidean space. We do not obtain any new results about linear codes, although several short and simple proofs for known results are...
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as χ varies over all multiplicative characters of k. For each χ, S(χ) is real, and (by Weil) has absolute value at most 2. Evans found empirically that, for large q = #k, these q − 1 sums were approximately equidistributed for the “Sato-Tate measure” (1/2π) √ 4− x2dx on the closed interval [−2, 2], and asked if this equidistribution was provably true. Rudnick had done numerics on the sums T (χ)...
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This article presents extensions of the Cramér-Wold theorem to measures that may have infinite mass near the origin. Corresponding results for sequences of measures are presented together with examples showing that the assumptions imposed are sharp. The extensions build on a number of results and methods concerned with injectivity properties of the Radon transform. Using a few tools from distri...
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ژورنال
عنوان ژورنال: Forum Mathematicum
سال: 2020
ISSN: 1435-5337,0933-7741
DOI: 10.1515/forum-2020-0145