Home » ∑ Sum symbol∑ Sum symbol Adeilson Silva9 de abril de 2021Math Symbols(∑) Sum symbol, copy and paste: ∑ Name: N-Ary Summation;Unicode number: U+2211;HTML-code: ∑ ;CSS-code: \2211;Entity: ∑ ;Block: Mathematical Operators;Unicode version: 1.1 (1993);