Numerical solving of equations in the work of José Mariano Vallejo

Details Numerical solving of equations in the work of José Mariano Vallejo Numerical solving of equations in the work of José Mariano Vallejo

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ahes...61..537p&link_type=abstract

Archive for History of Exact Sciences (ISSN 0003-9519), Vol. 61, No. 5, p. 537 - 552 (2008)

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The progress of Mathematics during the nineteenth century was characterised both by an enormous acquisition of new knowledge and by the attempts to introduce rigour in reasoning patterns and mathematical writing. Cauchy's presentation of Mathematical Analysis was not immediately accepted, and many writers, though aware of that new style, did not use it in their own mathematical production. This paper is devoted to an episode of this sort that took place in Spain during the first half of the century: It deals with the presentation of a method for numerically solving algebraic equations by José Mariano Vallejo, a late Spanish follower of the Enlightenment ideas, politician, writer, and mathematician who published it in the fourth (1840) edition of his book Compendio de Mathemáticas Puras y Mistas, claiming to have discovered it on his own. Vallejo's main achievement was to write down the whole procedure in a very careful way taking into account the different types of roots, although he paid little attention to questions such as convergence checks and the fulfilment of the hypotheses of Rolle's Theorem. For sure this lack of mathematical care prevented Vallejo to occupy a place among the forerunners of Computational Algebra.

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