unit_step( x )
The unit step function in SageMath. Defined by
\[ u(x) = \begin{cases} 0 \ , \ x < 0 \\ 1 \ , \ x \ge 0 \end{cases} \]Differs from heaviside in definition at the origin.
Plot on the real axis:
Special values:
Related functions: heaviside
Function category: generalized functions sagemath-docs