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  1. 7. Rafael Bombelli authored l’Algebra (1572, and 1579), a set of three books. Bombelli introduces a notation for √ −1, and calls it “piu´ di meno”. The discussion of cubics in l’Algebra follows Cardano, but now the casus irreducibilis is fully discussed. Bombelli considered the equation x3 = 15x+4 for which the Cardan formula gives ...

  2. Acontecimientos históricos de las matemáticas. La ciencia en la edad antigua, edad media y edad moderna. Historia de la Matemática. Integrantes: Henrri Yovani Cac Pop, Roberto Pa Cho. Historia de la Matemática (Patrick Guillermo Isaac García López,Guillermo Juan Diego García Lópe... DESARROLLO HISTÓRICO, EPISTEMOLÓGICO Y CIENTÍFICO ...

  3. Rafael Bombelli El ingeniero hidráulico italiano Rafael Bombelli (1526-1572) decidió escribir un libro de álgebra tras haber leído Ars Magna , del médico y matemático Gerolamo Cardano, en la que incluía la fórmula de resolución de la ecuación de tercer grado.

  4. 8 de dic. de 2016 · Raphael Bombelli made the psychedelic leap that Cardano could not make. He realised that Cardano’s formula would still give a solution when the discriminant was negative, provided that the square roots of negative quantities were manipulated in the correct manner. He was thus the first to properly handle complex numbers and apply them with ...

  5. 13 de dic. de 2015 · Los números complejos son una extensión de los números reales y forman el mínimo cuerpo algebraico cerrado que los contiene. El primero en usar los números complejos fue el matemático italiano Girolamo Cardano en 1545 quien inventó un nuevo número al representar la raíz cuadrada de -1. Al combinarlos como números ordinarios, dio como ...

  6. Complex numbers were introduced by the Italian famous gambler and mathematician Gerolamo Cardano (1501--1576) in 1545 while he found the explicit formula for all three roots of a cube equation. Many mathematicians contributed to the full development of complex numbers. The rules for addition, subtraction, multiplication, and division of complex ...

  7. Rafael Bombelli. Further reading. Bagni, G. T. (2009). Bombelli’s Algebra (1572) and a New Mathematical Object. For the Learning of Mathematics. Vol. 29, No. 2, pp. 29-31. Buehler, D. (2014). Incomplete understanding of complex numbers Girolamo Cardano: a case study in the acquisition of mathematical concepts. Synthese 191:4231-4252.