Abstract The Universe appears to have a `preferred' frame of reference, within which the cosmic microwave background is completely isotropic. Earth's motion through this relic radiation field measurable, and some viewed type observation as possible contradiction Einstein's principle relativity. Several experiments been proposed (and carried out) test for violations Lorentz invariance when trans...

We show that a QWEP von Neumann algebra has the weak* positive approximation property if and only it is seemingly injective in following sense: there factorization of identity M $$I{d_M} = vu:M\buildrel u \over \longrightarrow B(H)\buildrel v M$$ with normal, unital, completely contractive. As corollary, separable predual, isomorphic (as Banach space) to B(ℓ2). For instance this applies (rather...

Parametric seemingly unrelated regression (SUR) models are a common tool for multivariate regression analysis when error variables are reasonably correlated, so that separate univariate analysis may result in inefficient estimates of covariate effects. A weakness of parametric models is that they require strong assumptions on the functional form of possibly nonlinear effects of metrical covaria...

The seemingly unrelated Poisson (SUP) model (King (1989a), see also Aptech (1994)) is a model for bior multi-variate counted outcomes. Correlation between equations is introduced through a convolution structure with a common additive factor. Previous economic applications include the joint analysis of voluntary and involuntary labour mobility (Jung and Winkelmann, 1993) and the number of recrea...