For q > 0 let A denote the unital ∗-algebra with generator x and defining relation xx* = qx*x. Based on this algebra we study q-normal operators and the complex q-moment problem. Among other things, ...

Rhenn is a Manila-based content writer with a love for all things geek and pop culture, and science and technology. He graduated BA Journalism degree as a Cum Laude, and has since then pursued making ...

This is a preview. Log in through your library . This monthly journal, begun in 1950, is devoted entirely to research in pure and applied mathematics, principally to the publication of original papers ...