An initial point that provides safe convergence of Newton's method (Smale 1981; Petković et al. 1997, p. 1).
Approximate Zero
See also
Alpha-Test, Newton's Method, Point Estimation TheoryExplore with Wolfram|Alpha
References
Petković, M. S.; Herceg, D. D.; and Ilić, S. M. Point Estimation Theory and Its Applications. Novi Sad, Yugoslavia: Institute of Mathematics, 1997.Smale, S. "The Fundamental Theorem of Algebra and Complexity Theory." Bull. Amer. Math. Soc. 4, 1-35, 1981.Referenced on Wolfram|Alpha
Approximate ZeroCite this as:
Weisstein, Eric W. "Approximate Zero." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ApproximateZero.html