In mathematics (particularly in differential calculus), a differential operator is an operator that takes a function as input, and returns a function as a result. Differential operators will differentiate the function in one or more variables. Probably the best known differential operator is differentiation itself, which is commonly written using ${\displaystyle {\tfrac {d}{dx))}$ (in Leibniz's notation) and ${\displaystyle D}$ (in Euler's notation).^[1]

• Divergence
• Laplace operator

1. ↑ "List of Calculus and Analysis Symbols". Math Vault. 2020-05-11. Retrieved 2020-09-15.

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