Rani, Mamta; Kumar, Vinod Fractal hedgehogs. (English) Zbl 1034.28004 J. Korea Soc. Math. Educ., Ser. B, Pure Appl. Math. 9, No. 2, 91-105 (2002). In this paper the authors present (by Theorem 5) an interesting generalization of a fractal projective hedgehog theorem of Martinez-Maure. Further various hedgehogs are constructed using different parameters of Theorem 5. The hedgehog obtained in Theorem 5 presents fascinating approximate figures by assigning various numerical values to the parameters. It is also presented in Section 5 an algorithm which is implemented in C\(^{++}\). Reviewer: Nicolae-Adrian Secelean (Sibiu) Cited in 1 Document MSC: 28A80 Fractals 26A27 Nondifferentiability (nondifferentiable functions, points of nondifferentiability), discontinuous derivatives 53A04 Curves in Euclidean and related spaces 68U05 Computer graphics; computational geometry (digital and algorithmic aspects) 65D15 Algorithms for approximation of functions Keywords:fractal; hedgehog; Weierstrass M-test; graphical analysis PDFBibTeX XMLCite \textit{M. Rani} and \textit{V. Kumar}, J. Korean Soc. Math. Educ., Ser. B, Pure Appl. Math. 9, No. 2, 91--105 (2002; Zbl 1034.28004)