Olinde Rodrigues

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Benjamin Olinde Rodrigues (1795–1851), more commonly known as Olinde Rodrigues, was a French banker, mathematician, and social reformer.

Rodrigues was born into a well-to-do Portuguese Jewish family in Bordeaux, France. Jews were prohibited from enrolling at the École Polytechnique, the most prestigious school in Paris, and it is still unknown how he learned his advanced mathematics. Rodrigues was awarded a doctorate in mathematics in 1816. His dissertation contains the result now called Rodrigues' formula.

After graduation, Rodrigues became a banker. A close associate of the Comte de Saint-Simon, after the latter's death in 1825, he continued to champion his socialist ideals (Saint-Simonianism). Rodrigues published writings on politics, social reform, and banking.

In 1840, he published a result on transformation groups. However, his work on mathematics was largely ignored, and has only relatively recently been rediscovered. He died in Paris.

Rodrigues is remembered for two formulae: one about rotation of vectors (see Rodrigues' rotation formula) and the other about series of orthogonal polynomials. The latter is known as "the Rodrigues formula" thanks to the advocacy of Eduard Heine, who argued that, because Charles Hermite "had shown that Rodrigues had priority in discovering the formula, then it should be known as the Rodrigues formula.

Notes

Sources

Simon L. Altmann "Hamilton, Rodrigues and the quaternion scandal". Mathematics Magazine 62 291-308. ISSN 0025-570X.
Simon L. Altmann (2005). Rotations, Quaternions and Double Groups. Dover Publications. ISBN 0-486-44518-6.
Simon L. Altmann; & Eduardo L.Ortiz (eds.) Mathematics and social utopias in France: Olinde Rodrigues and his times. American Mathematical Society, Providence, RI. ISBN 0-8218-3860-1. Corrects some of the traditional thinking about Rodrigues as a mathematician

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