TY JOUR TI Hyperbolic paraboloid: relationship between analytical and constructive modeling KW hyperbolic paraboloid; directrix KW generator; general equation of a second-order surface; plane tangent to a quadric; visualization in the mathematical package Maple JO Journal of Natural Sciences Research AU Grafskiy, O.A. AU Chasovnikov, D.R. PY 2025 IS 10 PB INFRA-M Academic Publishing LLC.