Abstract
Both Smale’s alpha theory and Rump’s interval theorem provide the conditions which guarantee the existence of a simple solution of a square nonlinear system. In this paper, we generalize the conclusion provided by Rall to reveal the relationship between Smale’s alpha theory and Rump’s interval theorem. By point estimates, we propose the conditions under which the condition of Rump’s interval theorem holds. Furthermore, using only the information of the given system at the initial approximate point, we give the convergence conditions of interval Newton’s algorithm proposed by Rump.
Z. Li—This research was supported by Chinese National Natural Science Foundation under Grant Nos. 11601039, 11671169, 11501051, by the open fund Key Lab. of Symbolic Computation and Knowledge Engineering under Grant No. 93K172015K06, and by the Education Department of Jilin Province, “13th Five-Year” science and technology project under Grant No. JJKH20170618KJ.
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Li, Z., Wan, B., Zhang, S. (2017). The Convergence Conditions of Interval Newton’s Method Based on Point Estimates. In: Gerdt, V., Koepf, W., Seiler, W., Vorozhtsov, E. (eds) Computer Algebra in Scientific Computing. CASC 2017. Lecture Notes in Computer Science(), vol 10490. Springer, Cham. https://doi.org/10.1007/978-3-319-66320-3_20
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DOI: https://doi.org/10.1007/978-3-319-66320-3_20
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