Double-Struck N-Ary Summation ⅀
Symbol Meaning
“Double-Struck N-Ary Summation” is a letter belonging to the modern Greek alphabet. It represents the sound ] in writing. It was that very letter which the Latin S and the Cyrillic С originated from. The uppercase letter is used as a symbol of summation in mathematics. As for physics, there it denotes a special type of elementary particles called hyperons. The numerical value of sigma is 200.
Unicode offers various sigma versions, including the doubly outlined sign of N-Ary Summation, which you can copy from this page. For most general purposes, the standard uppercase sigma Σ is likely the most suitable, as it's widely used in mathematics and physics.
The symbol “Double-Struck N-Ary Summation” is included in the “Double-struck large operator” subblock of the “Letterlike Symbols” block and was approved as part of Unicode version 3.2 in 2002.
| Unicode Name | Double-Struck N-Ary Summation |
| Unicode Number | |
| HTML Code | |
| CSS Code | |
| Plane | 0: Basic Multilingual Plane |
| Unicode Block | Letterlike Symbols |
| Unicode Subblock | Double-struck large operator |
| Unicode Version | 3.2 (2002) |
| Type of paired mirror bracket (bidi) | None |
| Composition Exclusion | No |
| Case change | 2140 |
| Simple case change | 2140 |
| Math | + |
| Grapheme_Base | + |
| scripts | Common |
| Encoding | hex | dec (bytes) | dec | binary |
|---|---|---|---|---|
| UTF-8 | E2 85 80 | 226 133 128 | 14845312 | 11100010 10000101 10000000 |
| UTF-16BE | 21 40 | 33 64 | 8512 | 00100001 01000000 |
| UTF-16LE | 40 21 | 64 33 | 16417 | 01000000 00100001 |
| UTF-32BE | 00 00 21 40 | 0 0 33 64 | 8512 | 00000000 00000000 00100001 01000000 |
| UTF-32LE | 40 21 00 00 | 64 33 0 0 | 1075904512 | 01000000 00100001 00000000 00000000 |