2021/10/10 by Boris Rubin, Rubin, Boris
Engineering · Mathematics · Medicine · #44A12 #Advanced Numerical Analysis Techniques #FOS: Mathematics #Functional Analysis (math.FA) #Medical Imaging Techniques and Applications #Morphological variations and asymmetry
paper · pdf · doi:10.48550/arxiv.2110.04832
openalex publication_date 2021/10/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study higher-rank Radon transforms that take functions on j-dimensional totally geodesic submanifolds in the n-dimensional real constant curvature space to functions on similar submanifolds of dimension k >j. The corresponding dual transforms are also considered. The transforms are explored the Euclidean case (affine Grassmannian bundles), the elliptic case (compact Grassmannians), and the hyperbolic case (the hyperboloid model, the Beltrami-Klein model, and the projective model). The main objectives are sharp conditions for the existence and injectivity of the Radon transforms in Lebesgue spaces, transition from one model to another, support theorems, and inversion formulas. Conjectures and open problems are discussed.