example: See also Capital-pi notation Einstein notation Iverson bracket Iterated binary operation Kahan summation algorithm Product (mathematics) Summation by parts ∑ the summation single glyph (U+2211 N-ARY SUMMATION) ⎲ the paired glyph's beginning (U+23B2 SUMMATION TOP) ⎳ the paired glyph's end (U+23B3 SUMMATION BOTTOM) Notes References Bibliography External links Mathematical notation Addition