Frequency-explicit approximability estimates for time-harmonic Maxwell’s equations

نویسندگان

چکیده

We consider time-harmonic Maxwell’s equations set in a heterogeneous medium with perfectly conducting boundary conditions. Given divergence-free right-hand side lying $$L^2$$ , we provide frequency-explicit approximability estimate measuring the difference between corresponding solution and its best approximation by high-order Nédélec finite elements. Such an is crucial both priori posteriori error analysis of element discretizations equations, but derivation not trivial. Indeed, it hard to take advantage polynomials given that only exhibits regularity. proceed line previously obtained results for simpler setting scalar Helmholtz equation propose regularity splitting solution. In turn, this yields sharp estimates generalizing known showing interest methods.

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ژورنال

عنوان ژورنال: Calcolo

سال: 2022

ISSN: ['0008-0624', '1126-5434']

DOI: https://doi.org/10.1007/s10092-022-00464-7