– bul $${B}_{k}\left(x\right)=\sum\limits_{s=0}^{n}{C}_{k}^{s}{B}_{s}{x}^{n-s}, \quad k=0,1,\ldots, n$$ kórinistegi kópaǵzalılar, bunda ${B}_{0}, B_1, B_2, \ldots, B_n$ - Bernulli sanları.