GlyphIndexExplicit range
∑ from k = 1 to 4 of k = 10
The words preserve the intended index range in plain text.
Summation sign
The summation sign ∑ means to add a set of terms. It is an operator, separate from the Greek capital letter sigma Σ.
N-ARY SUMMATION
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Character details
♡→✦
3 code pointsMeaning and context
The summation sign ∑ means to add a set of terms. It is an operator, separate from the Greek capital letter sigma Σ.
How to use it
Give the terms or the index range. In plain text, “from k = 1 to 4” is clearer than trying to align limits with spaces.
Examples
Three terms
Total = ∑ of {3, 5, 8} = 16The listed terms make this compact note unambiguous.
Similar shapes, different characters
Greek capital sigma
U+03A3This is a letter. Use U+2211 for the summation operator.
DetailsProduct operator
U+220FProduct multiplies terms instead of adding them.
DetailsSources and method
- Unicode 18.0.0 character database — Pinned standard character identities and properties; the application computes UTF encodings from the original text.
- Unicode character code charts — Reference glyphs are not a guarantee of the appearance in a user’s font.