Consider a compact Riemannian manifold in dimension n with strictly convex boundary. We show the local invertibility near a boundary point of the transverse ray transform of $2$ tensors for n≥ 3 and the mixed ray transform of $2+2$ tensors for $n=3$. When the manifold admits a strictly convex function, this local invertibility result leads to global invertibility.
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Uhlmann et al. (2024) studied this question.
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