Exponentially Convergent Trapezoidal Rules to Approximate Fractional Powers of Operators
نویسندگان
چکیده
Abstract In this paper we are interested in the approximation of fractional powers self-adjoint positive operators. Starting from integral representation operators, apply trapezoidal rule combined with a double-exponential transform integrand function. work show how to improve existing error estimates for scalar case and also extend analysis We report some numerical experiments reliability obtained.
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ژورنال
عنوان ژورنال: Journal of Scientific Computing
سال: 2022
ISSN: ['1573-7691', '0885-7474']
DOI: https://doi.org/10.1007/s10915-022-01837-4