New moduli of smoothness: weighted DT moduli revisited and applied

K. A. Kopotun, D. Leviatan, I. A. Shevchuk

We introduce new moduli of smoothness for functions $f\in L_p[-1,1]\cap C^{r-1}(-1,1)$, $1\le p\le \infty$, $r\ge 1$, that have an $(r-1)$st locally absolutely continuous derivative…