Tuah N. J.
Ukr. Mat. Zh. - 2016. - 68, № 12. - pp. 1607-1619
We find the “norm” of a power function in the Gurov – Reshetnyak class on the real line. Moreover, as a result of numerical experiments, we establish a lower bound for the norm of the operator of even extension from the semiaxis onto the entire real line in the Gurov – Reshetnyak class.