Jean-Robert Argand (July 18, 1768 – August 13, 1822) was a gifted amateur mathematician. In 1806, while managing a bookstore in Paris, he published the idea of geometrical interpretation of complex numbers known as the Argand diagram.
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Famous quotes containing the word argand:
“I thought it a pity that some poor student did not live there, to profit by all that light, since he would not rob the mariner.... Think of fifteen Argand lamps to read the newspaper by! Government oil!—light enough, perchance, to read the Constitution by! I thought that he should read nothing less than his Bible by that lamp.”
—Henry David Thoreau (1817–1862)