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Zeros of optimal polynomial approximants in ℓ^p_A [article]

Raymond Cheng, William T. Ross, Daniel Seco
2021 arXiv   pre-print
In addition, for each positive integer d there is a polynomial f_d of degree at most d that minimizes the modulus of the root of its optimal linear polynomial approximant.  ...  We determine that a point of the complex plane is the zero of an optimal polynomial approximant for some element of ℓ^p_A if and only if it lies outside of a closed disk (centered at the origin) of a particular  ...  -106433GB-I00; and by the Madrid Government (Comunidad de Madrid-Spain) under the Multiannual Agreement with UC3M in the line of Excellence of University Professors (EPUC3M23), and in the context of the  ... 
arXiv:2104.08014v1 fatcat:2jdwfnc6erhipeddcrfd25grp4

CFD Platforms and Coupling CFD Platforms: an Introduction to Onera's Softwares

Jean Thibert
We also thank our colleagues who have provided us with the elsA results presented in the paper: F. Blanc (Cerfacs/Airbus) for the transport aircraft configuration, N.  ...  Dynamics), of Cerfacs and of development partners for their sustained effort to make the elsA software a powerful and reliable tool for research and for industry.  ...  This distinguishes GMRES from relaxation methods like Jacobi or Gauss-Seidel, for which the reduction rate tends to be the same for all frequencies: for these methods, a huge number of iterates may be  ...