Optimal error estimates for Chebyshev approximations of functions with endpoint singularities in fractional spaces

Spectral, collocation and related methods for boundary value problems involving PDEs (65N35) Best approximation, Chebyshev systems (41A50) Finite element, Rayleigh-Ritz and Galerkin methods for initial value and initial-boundary value problems involving PDEs (65M60) Approximation by polynomials (41A10) Rate of convergence, degree of approximation (41A25)

Cites Work

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