Spectral conditioning and pseudospectral growth

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Spectral conditioning and pseudospectral growth

Using the language of pseudospectra, we study the behavior of matrix eigenvalues under two scales of matrix perturbation. First, we relate Lidskii’s analysis of small perturbations to a recent result of Karow on the growth rate of pseudospectra. Then, considering larger perturbations, we follow recent work of Alam and Bora in characterizing the distance from a given matrix to the set of matrice...

متن کامل

Error Analysis for Mapped Legendre Spectral and Pseudospectral Methods

A general framework is introduced to analyze the approximation properties of mapped Legendre polynomials and of interpolations based on mapped Legendre–Gauss–Lobatto points. Optimal error estimates featuring explicit expressions on the mapping parameters for several popular mappings are derived. These results not only play an important role in numerical analysis of mapped Legendre spectral and ...

متن کامل

Spectral Algorithm for Pseudospectral Methods in Optimal Control

Recent convergence results with pseudospectral methods are exploited to design a robust, multigrid, spectral algorithm for computing optimal controls. The design of the algorithm is based on using the pseudospectral differentiation matrix to locate switches, kinks, corners, and other discontinuities that are typical when solving practical optimal control problems. The concept of pseudospectral ...

متن کامل

Local weak pairs spectral and pseudospectral singles and doubles configuration interaction

A new approximate correlation method has been developed by application of the local weak pairs approximation of Sæbo” and Pulay to pseudospectral singles and doubles configuration interaction ~SDCI! as developed by Martinez and Carter. The combination of the localization and pseudospectral approximations attacks both the problems of two-electron integral storage on disk and CI vector storage in...

متن کامل

Spectral and Pseudospectral Approximations Using Hermite Functions: Application to the Dirac Equation

Ben-yu Guo a,∗, Jie Shen b,c,∗∗ and Cheng-long Xu d a School of Mathematical Sciences, Shanghai Normal University, Shanghai, 200234, P.R. China E-mail: [email protected] b Department of Mathematics, Xiamen University, Xiamen, 361005, P.R. China c Department of Mathematics, Purdue University, West Lafayette, IN 47907, USA E-mail: [email protected] d Department of Applied Mathematics, Tongji ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Numerische Mathematik

سال: 2007

ISSN: 0029-599X,0945-3245

DOI: 10.1007/s00211-007-0080-3