represents the unit step function, equal to 0 for and 1 for .
represents the multidimensional unit step function which is 1 only if none of the are negative.
- Some transformations are done automatically when UnitStep appears in a product of terms.
- UnitStep provides a convenient way to represent piecewise continuous functions.
- UnitStep has attribute Orderless.
- For exact numeric quantities, UnitStep internally uses numerical approximations to establish its result. This process can be affected by the setting of the global variable $MaxExtraPrecision.
- UnitStep is 1.
Introduced in 1999