IPI
Mathematical reminiscences
Jan Boman
N/A
keywords:
IPI
Unique continuation of microlocally analytic distributions and injectivity theorems for the ray transform
Jan Boman
Using a vanishing theorem for microlocally real analytic distributions and a theorem on flatness of a distribution vanishing on infinitely many hyperplanes we give a new proof of an injectivity theorem of Bélisle, Massé, and Ransford for the ray transform on $\R^n$. By means of an example we show that this result is sharp. An extension is given where real analyticity is replaced by quasianalyticity.
keywords: analytic wave front set. ray transform
IPI
A local uniqueness theorem for weighted Radon transforms
Jan Boman
We consider a weighted Radon transform in the plane, $R_m(\xi, \eta) = \int_{\R} f(x, \xi x + \eta) m(x,\xi,\eta) dx$, where $m(x,\xi,\eta)$ is a smooth, positive function. Using an extension of an argument of Strichartz we prove a local injectivity theorem for $R_m$ for essentially the same class of $m(x,\xi,\eta)$ that was considered by Gindikin in his article in this issue.
keywords: weighted Radon transform. Radon transform

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