We show that the numerical index of an L-embedded space and that of its dual coincide. In particular, the numerical index of the predual of a real or complex von Neumann algebra or JBW*-triple ...

Let U be a (not necessarily selfadjoint) closed subalgebra of B(H) that is the algebra of all bounded linear operators on a Hilbert space H. In this note, we prove that the range of numerical index of ...

Tom Lee, Fundstrat Global Advisors' head of research, introduced a Bitcoin Misery Index, or BMI, on Friday. Lee describes the BMI as a proxy for how investors feel about Bitcoin’s “price action.” It ...

Pollutants discharged without being properly treated, have contaminated many rivers and groundwater making them unfit for consumption. This is a major constraint for development and management of ...