trident of Newton

trident of Newton

[′trīd·ənt əv ′nüt·ən]
(mathematics)
The curve in the plane given by the equation xy = ax 3+ bx 2+ cx + d, where a ≠0; this cuts the x axis in one or three points and is asymptotic to the y axis if d ≠0.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.