Caspar Wessel
Danish-Norwegian mathematician and cartographer
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Caspar Wessel was a Danish–Norwegian mathematician and cartographer. In 1799, Wessel was the first person to describe the geometrical interpretation of complex numbers as points in the complex plane and vectors. Wikipedia
Born: June 8, 1745, Vestby Municipality, Norway
Died: March 25, 1818 (age 72 years), Copenhagen, Denmark
Education: Oslo Cathedral High School and Copenhagen University
Nationality: Danish and Norwegian
Siblings: Johan Herman Wessel and Ole Christopher Wessel