This is a preview. Log in through your library . Abstract The pseudospectrum has become an important quantity for analyzing stability of nonnormal systems. In this paper, we prove a mapping theorem ...

A spectral mapping theorem is proved that resolves a key problem in applying invariant manifold theorems to nonlinear Schrödinger type equations. The theorem is applied to the operator that arises as ...

Robert Hazen and Michael Wong discuss their bold proposal for a new law of nature, centered around the idea that information is as fundamental to the cosmos as mass, energy or charge. Mirror Molecules ...