2 papers
math.AP2026
On the Wave of Klein-Gordon Type: Propagation Equation at a Boundary and Interior Observability
Siwar Ben Said
Understanding the transport of semiclassical measures along generalized bicharacteristics is a key ingredient in the proof of observability for the wave equation. Here, the coeffic…
math.AP2026
Lower bound of the energy norm for type II blow-up solutions to the energy-critical wave equation in non-euclidean geometries
Siwar Ben Said
This article is concerned with the study of the focusing energy-critical wave equation on the three-dimensional Riemannian manifold equipped with a smoot…