2 papers
math.AP2026
Symmetry conditions for spacetime observability of wave equations on the torus
Jingrui Niu, Ming Wang, Shengquan Xiang
We study observability for the one-dimensional wave equation on the torus from spacetime measurable observation sets. While the Geometric Control Condition (GCC) provides a suffici…
math.AP2025
The periodic KdV with control on space-time measurable sets
Jingrui Niu, Ming Wang, Shengquan Xiang
In this paper, we establish the local exact controllability of the KdV equation on torus around equilibrium states, where both the spatial control region and the temporal control r…