1 citations · 1 across the 4 of their papers we have counts for
4 papers
Notes on Hardy's Uncertainty Principle for the Wigner distribution and Schrödinger evolutions
Helge Knutsen
We consider Schrödinger equations with real quadratic Hamiltonians, for which the Wigner distribution of the solution at a given time equals, up to a linear coordinate transformati…
A Fractal Uncertainty Principle for the Short-Time Fourier Transform and Gabor multipliers
Helge Knutsen
We study the fractal uncertainty principle in the joint time-frequency representation, and we prove a version for the Short-Time Fourier transform with Gaussian window on the modul…
Daubechies' Time-Frequency Localization Operator on Cantor Type Sets II
Helge Knutsen
We study a version of the fractal uncertainty principle in the joint time-frequency representation. Namely, we consider Daubechies' localization operator projecting onto sphericall…
Daubechies' Time-Frequency Localization Operator on Cantor Type Sets
Helge Knutsen
We study Daubechies' time-frequency localization operator, which is characterized by a window and weight function. We consider a Gaussian window and a spherically symmetric weight…