Appleton's Cyclopedia of American Biography, edited by James
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RODRIGUEZ, Diego, Mexican mathematician, born in Atitatl in 1597; died in Mexico in 1668. He entered the military order of Merced, in Mexico, on 8 April, 1613, and rose to be commander of that order and professor of theology in its college. In 1637 he was appointed professor of mathematics in the Literary academy. He wrote " Tratado etheoroldgico sobre el Cometa aparecido en Mexico en 1652" (Mexico, 1652); "Tractatus Procemia-lium disciplinarum Mathematicarum, et de Commendatione Elementorum Euclidis" ; "Geometria especulativa" ; " De Aritmetica" ; "Tratado de Ecuaciones, con Tabla Algebraica discursiva "; and "Arte de fabricar Relojes horizontales, verticales, etc., con declinaciones y sin ellas." All but the first are in manuscript. They were taken from the convent of Merced to the National library, and they are to be published soon to show the early development of mathematics in Mexico.
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