∆
Translingual
Etymology
From the Greek capital letter Δ.
Symbol
∆
- (mathematics) An increment or change in a variable.
- ∆x a large change in variable x
- (set theory) The symmetric difference symbol.
- (mathematics, physics) The Laplace operator.
Usage notes
- Although this is the official encoding for the mathematical character, most math publications that apply unicode (LaTeX publications rarely use Unicode) use simply the Greek letter Δ for convenience.