نتایج جستجو برای: pick c
تعداد نتایج: 1066027 فیلتر نتایج به سال:
Niemann-Pick type C (NPC) disease is a fatal recessively inherited lysosomal cholesterol-sphingolipidosis. Mutations in the NPC1 gene cause approximately 95% of the cases, the rest being caused by NPC2 mutations. Here the molecular basis of a severe infantile form of the disease was dissected. The level of NPC1 protein in the patient fibroblasts was similar to that in control cells. However, th...
is positive semidefinite for every choice of an integer n and of n points z1, . . . , zn ∈ D. The significance of this characterization for interpolation theory is that it gives the necessity part in the Nevanlinna-Pick interpolation theorem: given points z1, . . . , zn ∈ D and w1, . . . , wn ∈ C, there exists w ∈ S with w(zj) = wj for j = 1, . . . , n if and only if the associated Pick matrix ...
Let P be a symmetric positive definite Pick matrix of order n. The following facts will be proven here: (a) P is the Gram matrix of a set of rational functions, with respect to a inner product defined in terms of a “generating function” associated to P ; (b) Its condition number is lower-bounded by a function growing exponentially in n; (c) P can be effectively preconditioned by the Pick matrix...
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