Author

Ca Ge

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Preprint Sep 2026

Two-term small-time spectral expansions for controllability Gramians

For a controllable single-input linear system in dimension $n$, the controllability Gramian eigenvalues, ordered decreasingly, are known to have the successive small-time orders $T, T^3, \ldots, T^{2n-1}$. We refine this leading-order hierarchy by explicitly computing the next-order coefficient of every eigenvalue and...

Emmanuel Tr'elat Ljll, Ca Ge, E. Zuazua · 1 citation · ⚡1

Preprint Jul 2026

A Varifold-Based Score for Decoupling Deformations in Shape Analysis

A novel coupling score designed to decouple distinct deformation modes during registration is introduced, which quantifies the extent to which the action of a given vector field on a shape can be replicated by another subspace of vector fields.

R. M. M. -. U. 8145, Ljll, Ca Ge et al. · 1 citation