Here we give a variety of general multivariate Iyengar type inequalities for not necessarily radial functions defined on the shell and ball. Our approach is based on the polar coordinates in $\mathbb{R}^{N}$, $N\geq 2$, and the related multivariate polar integration formula. Via this method we transfer well-known univariate Iyengar type inequalities and univariate author's related results into general multivariate Iyengar inequalities.
Anastassıou, G. (2019). General Multivariate Iyengar Type Inequalities. Constructive Mathematical Analysis, 2(2), 64-80. https://doi.org/10.33205/cma.543560
AMA
Anastassıou G. General Multivariate Iyengar Type Inequalities. CMA. Haziran 2019;2(2):64-80. doi:10.33205/cma.543560