Appendix/Mathematics/StepFunction

Unit Step Function and Its Derivative

[MF53], Part I, §2.1 (p. 123), Eq. (2.1.6)

$u(z)=\underset{-\mathrm{\infty }}{\overset{\mathrm{\infty }}{\int }}\delta (\xi )d\xi =\{\begin{array}{ll}0;& z<0\\ 1;& z>0\end{array}$

See Also