About three in 10 restaurant operators — 29%— said they do not expect their business to return to normal levels for least a year, and another 32% said they believed it would be seven to 12 ...

Restaurant operators are scurrying to completely revamp operations to meet the needs of a more or less "locked-in" customer through delivery, drive-thru and increased health and safety demands, so ...

Given two normal operators A and B on a Hilbert space it is known that, in general, AB is not normal. The question on characterizing those pairs of normal operators for which their products are normal ...

Linear operators form the cornerstone of analysis in Banach spaces, offering a framework in which one can rigorously study continuity, spectral properties and stability. Banach space theory, with ...

Linear operators form the backbone of modern mathematical analysis and have become indispensable in characterising the behaviour of dynamical systems. At their core, these operators are functions ...