1729 (number)

1729 is the natural number following 1728 and preceding 1730. It is a taxicab number, and is variously known as Ramanujan's number and the Ramanujan-Hardy number, after an anecdote of the British mathematician G. H. Hardy when he visited Indian mathematician Srinivasa Ramanujan in hospital. He related their conversation:I remember once going to see him when he was ill at Putney. I had ridden in taxi cab number 1729 and remarked that the number seemed to me rather a dull one, and that I hoped it was not an unfavourable omen. "No," he replied, "it is a very interesting number; it is the smallest number expressible as the sum of two cubes in two different ways."

1976 in Afghanistan

The following lists events that happened during 1976 in Afghanistan

List of captains regent of San Marino, 1500–1700

This is a list of captains regent of San Marino from 1500 to 1700

List of captains regent of San Marino, 1243–1500

This is a list of captains regent of San Marino from 1243 to 1500

Shuntarō Itō

Shuntarō Itō is a Japanese scholar of the history of science and the study of comparative civilization. Itō is an honorary professor of University of Tokyo and International Research Center for Japanese Studies, and a professor of Reitaku University

1961 in Afghanistan

The following lists events that happened during 1961 in Afghanistan

1951 in Afghanistan

The following lists events that happened during 1951 in Afghanistan

1921 in Afghanistan

The following lists events that happened during 1921 in Afghanistan

List of captains regent of San Marino, 1701–1900

This is a list of captains regent of San Marino from 1701 to 1900

1911 in Afghanistan

The following lists events that happened during 1911 in Afghanistan

Della Dumbaugh

Della Jeanne Dumbaugh is an American mathematician and historian of mathematics, focusing on the history of algebra and number theory. She is a professor of mathematics at the University of Richmond, and the editor-in-chief of The American Mathematical