Xi (upper case Ξ, lower case ξ) is the 14th letter of the Greek alphabet. It is pronounced ksee by modern Greeks. In the system of Greek numerals it has a value of 60.
The lower-case letter ξ is used as a symbol for:
- Random Variables
- Extent of Reaction (a topic found most often in chemical engineering kinetics)
The upper-case letter Ξ is used as symbol for:
- The 'cascade particles' in particle physics.
|Α α Alpha||Β β Beta||Γ γ Gamma|
|Δ δ Delta||Ε ε Epsilon||Ζ ζ Zeta|
|Η η Eta||Θ θ Theta||Ι ι Iota|
|Κ κ Kappa||Λ λ Lambda||Μ μ Mu|
|Ν ν Nu||Ξ ξ Xi||Ο ο Omicron|
|Π π Pi||Ρ ρ Rho||Σ σ Sigma|
|Τ τ Tau||Υ υ Upsilon||Φ φ Phi|
|Χ χ Chi||Ψ ψ Psi||Ω ω Omega|
Medieval Greece / Byzantine Empire
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