ENIn mathematics, an ellipse is a curve in a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for ever...
ENIn astrodynamics or celestial mechanics an elliptic orbit is a Kepler orbit with the eccentricity less than 1; this includes the special case of a circular o...
ENIn mathematics, an elliptic curve is a plane algebraic curve defined by an equation of the form that is non-singular; that is, its graph has no cusps or self...
ENIn mathematics, an elliptic surface is a surface that has an elliptic fibration, in other words a proper morphism with connected fibers to an algebraic curve...