The Anisotropic Balian-Low Phenomenon and the Variational Construction of Wavelet Frames

Abstract: This paper investigates the stability of wavelet frames within anisotropic function spaces. By replacing classical integral estimates with a matrix algebra approach, we establish the boundedness of frame operators and derive optimal dual wavelets via variational principles. Our analysis reveals fundamental geometric obstructions, identified here as an anisotropic Balian-Low phenomenon, which preclude the existence of tight frames for isotropic generators in high-shear regimes. Furthermore, we apply these results to determine sharp constants for Sobolev embeddings, explicitly quantifying the impact of dilation geometry on analytic stability.