Results 41 to 50 of about 19,468 (288)
A Restarted Lanczos Approximation to Functions of a Symmetric Matrix
, 2010 In this paper, we investigate a method for\ud restarting the Lanczos method for approximating the matrix-vector\ud product *f(A)b*, where *A ∈ ℝn×n* is a\ud symmetric matrix.
Simpson, Daniel P. +2 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa +8 more
wiley +1 more source
Super-optimal approximation by meromorphic functions. [PDF]
, 1996 Let G be a matrix function of type m × n and suppose that G is expressible as the sum of an H∞ function and a continuous function on the unit circle. Suppose also that the (k – 1)th singular value of the Hankel operator with symbol G is greater than the ...
Young, N. J., Peller, V. V.
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Polynomial Procrustes problem : paraunitary approximation of matrices of analytic functions [PDF]
, 2023 In the narrowband case, the best least squares approximation of a matrix by a unitary one is given by the Procrustes problem. In this paper, we expand this idea to matrices of analytic functions, and characterise a broadband equivalent to the narrowband ...
Weiss, Stephan +3 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro +11 more
wiley +1 more source
Analytic approximate eigenvalues by a new technique. Application to sextic anharmonic potentials
Results in Physics, 2018 A new technique to obtain analytic approximant for eigenvalues is presented here by a simultaneous use of power series and asymptotic expansions is presented.
D. Diaz Almeida, P. Martin
doaj +1 more source
The Approximation Property For Spaces For Holomorphic Functions On Infinite-dimensional Spaces I
, 2015 For an open subset U of a locally convex space E, let (H(U), τ0) denote the vector space of all holomorphic functions on U, with the compact-open topology.
Mujica J., Dineen S.
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters +17 more
wiley +1 more source
Approximation of analytic functions on compact sets and Bernstein’s inequality
, 1974 The characterization of analytic functions defined on a compact set K in R N {{\mathbf {R}}_N} by their polynomial approximation is possible if and only if ...
M. S. Baouendi, C. Goulaouic
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On equisingular approximation of plurisubharmonic functions
, 2023 It is a natural question to ask which plurisubharmonic functions admit a 'nice' approximation in the sense of a decreasing equisingular approximation with analytic singularities.
An, Jongbong, Hoseob Seo
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