Given a Hausdorff continuum X , we introduce a topology on X×XX×X that yields a Hausdorff continuum. We call the resulting space the Alexandroff–Urysohn square of X and prove that X has the fixed point property if and only if the Alexandroff–Urysohn square of X has the fixed point property.
For statistical inference connected to the scalar skew-normal distribution, it is known that the so-called centred parametrization provides a more convenient parametrization than the one commonly employed for writing the density function. We extend the definition of the centred parametrization to the multivariate case, and study the corresponding information Air Yeezy 2
Presented are the results of a five-year (2001-2005) monitoring of deformations of the Kerzhenets river channel Nike Air Force 1 Low Canada
in its lower part. The concave-bank caving observations were made for three free bights compose d of sand and loamy sand: the steep segmental, segmental developed and segmental gently sloping blights.
A sodium ion-selective PVC membrane electrode based on di(o-methoxy)stilbenzo-24-crown-8 is reported. The electrode gives a near-Nernstian response in the range 9×10−6–1×10−2 M sodium ion and can be used in the pH range 5–8.5. Selectivity coefficients are 1.8×10−1 (K+), 2.0×10−4 (Li+) 2.5×10−2 (NH+4) and about 10−4 for Mg2+, Ca2+ and Ba2+.