Category: Disambiguation Eugenio Beltrami (16 November 1835 - 18 February 1900) was an Italian mathematician notable for his work on non-Euclidean geometry, electricity, and magnetism. ... Leonhard Euler, one of the greatest mathematicians of all time A mathematician is a person whose primary area of study and research is the field of mathematics. ... Beltrami County is a county located in the northern part of the U.S. state of Minnesota. ... Capital Saint Paul Largest city Minneapolis Area  Ranked 12th  - Total 87,014 sq mi (225,365 km²)  - Width 250 miles (400 km)  - Length 400 miles (645 km)  - % water 8. ... Beltrami is a city located in Polk County, Minnesota. ... A neighbourhood or neighborhood (see spelling differences) is a geographically localised community located within a larger city or suburb. ... Nickname: Motto: En Avant (French: Forward) Location in Hennepin County and the state of Minnesota Coordinates: , Country United States State Minnesota Counties Hennepin Government  - Mayor R.T. Rybak (DFL) Area  - City 58. ... Beltrami is a neighborhood in the Northeast community in Minneapolis. ... A count is a nobleman in most European countries, equivalent in rank to a British earl, whose wife is also still a countess (for lack of an Anglo-Saxon term). ... Giacomo Constantino Beltrami (1779 – January 6, 1855) was an Italian jurist, author, and explorer, best known for claiming to have discovered the headwaters of the Mississippi River in 1823 while on a trip through much of the United States (later expeditions determined a different source, however). ... For the river in Canada, see Mississippi River (Ontario). ... Geographical list of stone used for decorative purposes in construction and sculpture; currently or historically produced in various countries. ... Look up company in Wiktionary, the free dictionary. ... Image File history File links Disambig_gray. ...