Mathematician:John Williams Nystrom

Mathematician
Swedish, later American, civil engineer, inventor, and author.

Best known for inventing a calculating machine and a system of hexadecimal notation.

Nationality
Swedish, later American

History

 * Born: 1825 in Småland province, Sweden
 * Died: 11 May 1885 in Philadelphia, Pennsylvania

Theorems and Definitions
Inventor of a system of hecadeximal notation in $1862$:
 * Noll, An, De, Ti, Go, Su, By, Ra, Me, Ni, Ko, Hu, Vy, La, Po, Fy, Ton

Publications

 * 1852: A treatise on screw propellers and their steam-engines, with practical rules and examples how to calculate and construct the same ... accompanied with A treatise on bodies in motion in fluid ... also, a full description of a calculating machine
 * 1862: Project of a new system of arithmetic, weight, measure and coins, proposed to be called the tonal system, with sixteen to the base
 * 1866: On technological education and the construction of ships and screw propellers, for naval and marine engineers
 * 1868: Informe al supremo gobierno del Perú, sobre una espedición al interior de la república
 * 1869: Pocket-book of mechanics and engineering
 * 1874: Principles of dynamics
 * 1875: A new treatise on elements of mechanics establishing strict precision in the meaning of dynamical terms accompanied with an appendix on duodenal arithmetic and metrology
 * 1876: A new treatise on steam engineering, physical properties of permanent gases, and of different kinds of vapor

Also known as
His name in Swedish: Johan Vilhelm Nyström.