An acceleration technique is developed that significantly improves the accuracy of a wide class of well-known numerical procedures for approximating the spectra of linear compact operators. A given ...

Recent results of M. Radjabalipour and H. Radjavi assert that the sum of a normal operator $N$ with spectrum on a smooth Jordan curve and a compact operator $K$ in ...

NEC Corporation (NEC; TSE: 6701) today announced the global launch of its iPASOLINK 100A and 200A mobile backhaul and small cell solutions. These new 6-42Ghz frequency additions NEC’s comprehensive ...

AT&T, T-Mobile and Dish have all expressed views that there should be changes to the rules on how much spectrum one operator can own – but differ in their estimations of what’s fair. As reported by ...