Name the Italian Mathematician onwhole name Levi-civita symbol is named and also inventor of tensor calculus ?
Levi-Civita symbol In mathematics, particularly in linear algebra, tensor analysis, and differential geometry, the Levi-Civita symbol represents a collection of numbers; defined from the sign of a permutation of the natural numbers 1, 2, …, "n" , for some positive integer n . It is named after the Italian mathematician and physicist Tullio Levi-Civita. Other names include the permutation symbol, antisymmetric symbol, or alternating symbol, which refer to its antisymmetric property and definition in terms of permutations.
Roger Joseph Boscovich Roger Joseph Boscovich (Croatian: "Ruđer Josip Bošković" , ] , Italian: "Ruggiero Giuseppe Boscovich" , Latin: "Rodericus Iosephus Boscovicus" ; 18 May 1711 – 13 February 1787) was a Ragusan physicist, astronomer, mathematician, philosopher, diplomat, poet, theologian, Jesuit priest, and a polymath from the city of Dubrovnik (modern-day Croatia), who studied and lived in Italy and France where he also published many of his works. He was nicknamed "the Croatian Leibniz" by Werner Heisenberg.