In signal processing, the unit step function is typically written as $u(t)$. In other references though I have seen it represented as $H(t)$ and even $\theta(t)$. The unit impulse is fairly ubiquitously represented as $\delta(t)$. Why the inconsistency in giving the unit step function a symbolic representation?
2026-03-27 10:08:56.1774606136
Why are there so many different symbols to represent the Heaviside (unit step) function
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