Indicator function of positive numbers
| This article needs additional citations for verification. Please help by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: – · · · scholar · JSTOR (December 2012) (Learn how and when to remove this template message) |
The Heaviside step function, using the half-maximum convention
The Heaviside step function, or the unit step function, usually denoted by H or θ (but sometimes u, 1 or