\text{And\ this\ shows\ a\ combination\ with\ a\ background\ image\ at\ a\ desired\ opacity~}{Z_{\alpha}\left( f \right) = \frac{1}{2i\,\cos\left( \frac{\alpha\pi}{2} \right)}{\int_{C}\frac{f(iz)\left( - z \right)^{\alpha}}{e^{2\pi z} - 1}}\mathbb{d}z}
