We obtain a Cartesian form of Putnam's inequality for doubly commuting hyponormal n-tuples, and we establish new relations between the Taylor and Xia spectra of such n-tuples.

THE title of Mr. Smith's book conveys an adequate idea of its scope. The author indicates the lines of his treatment thus:—“In Descartes' system, as we have tried to show, there are three fundamental ...

Density describes substances based on much mass they have in a certain volume. Increasing pressure causes a gas to decrease in volume while it’s mass stays the same. Objects that are more dense than ...

NEW YORK & ISTANBUL--(BUSINESS WIRE)--Cartesian Capital Group, a leading global private equity firm, announced today it has closed an equity investment in Turkey’s leading multi-brand food service ...