👉 In mathematics and physics, the "sphenographic" term refers to a set of mathematical objects that are related to the concept of spherical harmonics. The sphenographic function is often used in geometric optics or celestial mechanics. The sphenographic function can be defined as: f(z) = (z^2 - 1)^(-1/3) where z is a complex number and f(z) is the sphenographic function. This function is named after the Greek mathematician E