Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Momentum ray transforms. / Krishnan, Venkateswaran P.; Manna, Ramesh; Sahoo, Suman Kumar и др.
в: Inverse Problems and Imaging, Том 13, № 3, 06.2019, стр. 679-701.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Momentum ray transforms
AU - Krishnan, Venkateswaran P.
AU - Manna, Ramesh
AU - Sahoo, Suman Kumar
AU - Sharafutdinov, Vladimir A.
N1 - Publisher Copyright: © 2019 American Institute of Mathematical Sciences.
PY - 2019/6
Y1 - 2019/6
N2 - The momentum ray transform I k integrates a rank m symmetric tensor field f over lines in R n with the weight t k : (I k f)(x,ξ)=∫ ∞ -∞ t k 〈 f(x+tξ),ξ m〉 dt. In particular, the ray transform I=I0 was studied by several authors since it had many tomographic applications. We present an algorithm for recovering f from the data (I 0 f,I 1 f,…,I m f). In the cases of m=1 and m=2, we derive the Reshetnyak formula that expresses ∥f∥Hst(ℝn) through some norm of (I 0 f,I 1 f,…,I m f). The Hst-norm is a modification of the Sobolev norm weighted differently at high and low frequencies. Using the Reshetnyak formula, we obtain a stability estimate.
AB - The momentum ray transform I k integrates a rank m symmetric tensor field f over lines in R n with the weight t k : (I k f)(x,ξ)=∫ ∞ -∞ t k 〈 f(x+tξ),ξ m〉 dt. In particular, the ray transform I=I0 was studied by several authors since it had many tomographic applications. We present an algorithm for recovering f from the data (I 0 f,I 1 f,…,I m f). In the cases of m=1 and m=2, we derive the Reshetnyak formula that expresses ∥f∥Hst(ℝn) through some norm of (I 0 f,I 1 f,…,I m f). The Hst-norm is a modification of the Sobolev norm weighted differently at high and low frequencies. Using the Reshetnyak formula, we obtain a stability estimate.
KW - Inverse problems
KW - Ray transform
KW - Reshetnyak formula
KW - Stability estimates
KW - Tensor analysis
KW - tensor analysis
KW - inverse problems
KW - stability estimates
UR - http://www.scopus.com/inward/record.url?scp=85065743163&partnerID=8YFLogxK
U2 - 10.3934/ipi.2019031
DO - 10.3934/ipi.2019031
M3 - Article
AN - SCOPUS:85065743163
VL - 13
SP - 679
EP - 701
JO - Inverse Problems and Imaging
JF - Inverse Problems and Imaging
SN - 1930-8337
IS - 3
ER -
ID: 20157883