椭圆
发表于 2025-3-27 00:48:20
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防止
发表于 2025-3-27 02:17:13
Incomplete Data Problems,he volume element on . induced by the metric . The reconstruction problem is to find the function .from data of .∣. More complicated versions of (6.1) arise in applications. A weight function ω = ω ., .) (known or unknown) can appear in the integral, the “image” . can be a section of a tensor bundle
evaculate
发表于 2025-3-27 05:27:41
Spherical Transform and Inversion,he Euclidean n - 1-surface element. We shall also write . (a, r) = . (a, r)) where . (a, r) denotes the sphere with the centre a and radius r. Replacing .. by . Euclidean sphere .., we define the spherical transform . on the variety of spheres in ... The reconstruction problems for .. and .. are equ
Small-Intestine
发表于 2025-3-27 11:07:00
Algebraic Integral Transform,1 with real coefficients in .. Write a polynomial a ∈ P. as follows:.The space is a real affine variety of dimension.Any polynomial a ∈ P. defines the real algebraic cone {a .0} in Y. Choose a coordinate system ..,., ... in Y and consider the n-sphere. Denote by A C . (Y) the intersection of this co
空洞
发表于 2025-3-27 14:54:29
Flat Integral Transform,from .. . by inversion of the Radon transform in each . 1-plane in .. On the other hand, the scope of integrals .. . is redundant for reconstruction of. if . -1, since dim A.(.) = (. + 1)(. - .).. Therefore there is a large variety of inversion methods for .. . To avoid redundancy we state the reconstruction problem as follows:
Focus-Words
发表于 2025-3-27 19:07:00
Radon Transform,me hyperplane: ., ., . Thus we have two-fold covering Sn. x R —> A._. (E) where Sn. is the unit sphere in E and A._. (E) is the manifold of all hyperplanes in E. The topological space A._. (E) is homeomorphic to the projective space of dimension n without one point. This point corresponds to the infinite hyperplane in the projective closure of E.
发展
发表于 2025-3-28 00:40:11
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Anhydrous
发表于 2025-3-28 03:31:36
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行为
发表于 2025-3-28 06:47:43
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诗集
发表于 2025-3-28 11:27:34
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