Jean Robert Argand invented a method of geometrically representing complex numbers and their operations. The Argand diagramis a graphic representation of complex numbers as points on a plane and their additions. He is also credited with giving proof,...

The contribution of Argand to mathematics is an excellent example of being at the right place at the right time. Argand was not a trained mathematician, but a Parisian bookkeeper who never associated with or belonged to any group of mathematicians,...

1768-1822 French-Swiss mathematician who made important contributions in the area of complex numbers. Although Argand was, by profession, an accountant, he performed some high-quality work in mathematics. Perhaps most important was his geometrical...

Jean-Robert Argand (July 18, 1768 - August 13, 1822) was a non-professional mathematician. In 1806, while managing a bookstore in Paris, he published the idea of geometrical interpretation of complex numbers known as the Argand...

The Argand lamp initiated a chain of events that has led to our present method of lighting rooms, In the l780s Ami Argand (1750-1803) of Switzerland invented an oil lamp burner with a tubular wick that allowed air to flow up through the...

CINCINNATI - The August night when we visit Jean-Robert at Pigall's, Menu No. 22 is in place. That number says much about the restaurant, which has only been open a year. Chef-owner Jean-Robert de Cavel is constantly tweaking the offerings, as well as occasionally...