Sigma
- För andra betydelser, se Sigma (olika betydelser).
 | |||||
| Grekiska alfabetet | |||||
|---|---|---|---|---|---|
| Enhetsalfabetet | |||||
| Α α Alfa | Ν ν Ny | ||||
| Β β Beta | Ξ ξ Xi | ||||
| Γ γ Gamma | Ο ο Omikron | ||||
| Δ δ Delta | Π π Pi | ||||
| Ε ε Epsilon | Ρ ρ Rho | ||||
| Ζ ζ Zeta | Σ σ ς Sigma | ||||
| Η η Eta | Τ τ Tau | ||||
| Θ θ Theta | Υ υ Ypsilon | ||||
| Ι ι Jota | Φ φ Fi | ||||
| Κ κ Kappa | Χ χ Chi | ||||
| Λ λ Lambda | Ψ ψ Psi | ||||
| Μ μ My | Ω ω Omega | ||||
| Extra tecken i äldre alfabet¹ | |||||
 Digamma |  San | ||||
 Heta | |||||
| Numeriska tecken¹ | |||||
 Stigma |  Sampi | ||||
 Koppa | |||||
| Extra tecken i andra språk¹ | |||||
 Jot |  Sjo | ||||
| ¹Källor: se Grekiska alfabetet#Referenser | |||||
Sigma (grekiska σίγμα sígma) (versal: Σ, gemen: σ, gemen finalform: ς) är den 18:e bokstaven i det grekiska alfabetet. Den motsvarar, och har samma ljudvärde som, S, s i det latinska alfabetet. Varianten ς av gemena sigma används när bokstaven står sist i ett ord.
I det joniska talbeteckningssystemet hade den värdet 200.[1]
Inom naturvetenskapen brukar den versala formen beteckna summa. Den gemena står inom statistiken för standardavvikelse.
Unicode
| decimalt | hexadecimalt | HTML | |
|---|---|---|---|
| σ | 963 | 3C3 | σ |
| Σ | 931 | 3A3 | Σ |
| ς | 962 | 3C2 | ς |
Källor
- ^ Aaboe, Asger (1969). Antikens matematik. Prisma Stockholm. sid. 115
Media som används på denna webbplats
Sigma uc lc.svg
Uppercase and lowercase Greek letter sigma, the 18th letter of the Greek alphabet. Times New Roman font.
Uppercase and lowercase Greek letter sigma, the 18th letter of the Greek alphabet. Times New Roman font.
San uc lc.svg
Uppercase and lowercase Greek letter san, an archaic letter of the Greek alphabet. Times New Roman font alike.
Uppercase and lowercase Greek letter san, an archaic letter of the Greek alphabet. Times New Roman font alike.
Qoppa Q-and-Z-shaped.svg
two glyphs of Greek letter Qoppa, Q-shaped and Z-shaped forms. Z-shaped numeral form following the Lamedh-shaped glyph found in many fonts.
two glyphs of Greek letter Qoppa, Q-shaped and Z-shaped forms. Z-shaped numeral form following the Lamedh-shaped glyph found in many fonts.
Stigma uc lc.svg
Uppercase and lowercase Greek letter stigma, an archaic letter of the Greek alphabet. Times New Roman font alike.
Uppercase and lowercase Greek letter stigma, an archaic letter of the Greek alphabet. Times New Roman font alike.
Heta uc lc.svg
Uppercase and lowercase Greek letter heta, an archaic letter of the Greek alphabet. Times New Roman font alike.
Uppercase and lowercase Greek letter heta, an archaic letter of the Greek alphabet. Times New Roman font alike.
Yot uc lc.svg
Författare/Upphovsman: MacMoreno, Licens: CC BY-SA 4.0
Uppercase and lowercase Greek letter yot, a conventional letter of the Greek alphabet. Times New Roman font.
Författare/Upphovsman: MacMoreno, Licens: CC BY-SA 4.0
Uppercase and lowercase Greek letter yot, a conventional letter of the Greek alphabet. Times New Roman font.
Sho uc lc.svg
Uppercase and lowercase Greek letter sho, an archaic letter of the Greek alphabet. Times New Roman font.
Uppercase and lowercase Greek letter sho, an archaic letter of the Greek alphabet. Times New Roman font.
Digamma uc lc.svg
Uppercase and lowercase Greek letter wau (digamma), an archaic letter of the Greek alphabet. Times New Roman font alike.
Uppercase and lowercase Greek letter wau (digamma), an archaic letter of the Greek alphabet. Times New Roman font alike.