Approximation Rates for Interpolation of Sobolev Functions via Gaussians and Allied Functions

Keaton Hamm

A \Riesz-basis sequence for $L_2[-\pi ,\pi ]$ is a strictly increasing sequence $X:=(x_j{)}_{j\in \mathbb{Z}}$ in $\mathbb{R}$ such that the set of functions $\left(e^{-ix_j(\cdot)}\right)_…