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Contours of algebraic surfaces
(Wolfram Demonstrations Project, 2016)
Contours of algebraic surfaces
(Wolfram Demonstrations Project, 2013)
Bifurcations at infinity, invariant algebraic surfaces, homoclinic and heteroclinic orbits and centers of a new Lorenz-like chaotic system
(2016-04-01)
We present a global dynamical analysis of the following quadratic differential system (Formula presented.) , where (Formula presented.) are the state variables and a, b, d, f, g are real parameters. This system has been ...
GLOBAL DYNAMICS of THE LORENZ SYSTEM WITH INVARIANT ALGEBRAIC SURFACES
(World Scientific Publ Co Pte Ltd, 2014)
Invariant Algebraic Surfaces and Impasses
(2021-07-01)
Polynomial vector fields X: R3→ R3 that have invariant algebraic surfaces of the form M={f(x,y)z-g(x,y)=0}are considered. We prove that trajectories of X on M are solutions of a constrained differential system having I= { ...
Drawfn3d: 3D parametric surfaces drawing program
(Mathematics Archives (MathArchives), 2011)
Quadratic surfaces
(Wolfram Demonstration Project, 2011)
Quadratic surfaces
(Wolfram Demonstration Project, 2016)
Tangent to a surface
(Wolfram Demonstration Project, 2016)