On some infinite sums of iterated radicals

• Autores: Javier Peralta Coronado
• Localización: International journal of mathematical education in science and technology, ISSN 0020-739X, Vol. 40, Nº. 2, 2009, págs. 290-300
• Idioma: inglés
• DOI: 10.1080/00207390802419529
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• Resumen

  • The general purpose of this article is to shed some light on the understanding of real numbers, particularly with regard to two issues: the real number as the limit of a sequence of rational numbers and the development of irrational numbers as a continued fraction. By generalizing the expression of the golden ratio in the form of the limit of two particular sequences, a new characterization of this number will appear. In that process, an infinite sum of iterated radicals is obtained. Based on that result, this article will then proceed to analyse that sum. The conditions under which the infinite sum yields an integer will be inspected, thereby calculating the value of the sum. After that, a method is established to develop some algebraic irrationals as a continued fraction. Finally, the results will be applied to an infinite difference of iterated radicals.