Approximation of functions in variable-exponent Lebesgue and Sobolev spaces by finite Fourier-Haar series. (English, Russian) Zbl 1305.41018
Sb. Math. 205, No. 2, 291-306 (2014); translation from Mat. Sb. 205, No. 2, 145-160 (2014).
Reviewer: Yuri A. Farkov (Moscow)