Xi (letter)
From Wikinfo
| |||
| Greek alphabet | |||
|---|---|---|---|
| Αα | Alpha | Ββ | Beta |
| Γγ | Gamma | Δδ | Delta |
| Εε | Epsilon | Ϝϝ | Wau |
| Ϛϛ | Stigma | Ζζ | Zeta |
| Ηη | Eta | Ͱͱ | Heta |
| Θθ | Theta | Ιι | Iota |
| Jȷ | Yot | Κκ | Kappa |
| Λλ | Lamda | Μμ | Mu |
| Νν | Nu | Ξξ | Xi |
| Οο | Omicron | Ππ | Pi |
| Ϻϻ | San | Ϸϸ | Sho |
| Ϙϙ | Koppa | Ρρ | Rho |
| Σσ | Sigma | Ττ | Tau |
| Υυ | Upsilon | Φφ | Phi |
| Χχ | Chi | Ψψ | Psi |
| Ωω | Omega | Ͳͳ | Sampi |
| Greek numerals | |||
Xi (uppercase/lowercase Ξ ξ), is the 14th letter of the Greek alphabet, used to represent the "x" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 60. Letters that came from it include the Roman X and Cyrillic Ѯ.
The upper-case letter Ξ is used as symbol for:
- The 'cascade particles' in particle physics.
References
- Adapted from the Wikipedia article, "Xi_(letter)" http://simple.wikipedia.org/wiki/Xi_(letter), used under the GNU Free Documentation License
