👉 Semideistical is a mathematical concept in mathematics, specifically in algebraic geometry. It refers to a special case of the Riemann-Roch theorem that deals with the number of lines passing through a point and the number of rational curves passing through it. In other words, if you have a curve C in the projective plane P2 (the two-dimensional projective space) given by an equation of the form y^2 = x^3 + ax + b, where a and b
