We propose a simple approach for simultaneous optical half-adder and half-subtracter using a single-slot waveguide that offers tight light confinement and enhanced nonlinearity. By exploiting the parametric depletion effect of twin degenerate four-wave mixing processes in the slot waveguide. we simulate 160-Gbit/s half-adder (A + B) and half-subtracter (A - B. B - A) and characterize ... https://chefesquipmenters.shop/product-category/sujihiki-knives/