# step function

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Related to Piecewise constant: step functions

## step function

[′step ‚fəŋk·shən]
(mathematics)
A function ƒ defined on an interval [a,b ] so that [a,b ] can be partitioned into a finite number of subintervals on each of which ƒ is a constant. Also known as simple function.
More generally, a real function with finite range.
References in periodicals archive ?
In the proof of our error estimates, we--perhaps surprisingly--found that among the greatest technical challenges was obtaining approximation properties for piecewise constant boundary functions which are valid on the quite general polyhedral elements we consider.
0](t) such as the piecewise constant model or leave it unspecified as in the Cox proportional hazards model.
To circumvent this problem, two priors of piecewise constant and structure-correlated sparse are incorporated to the objective function of Equation (3), accordingly,
Consider the case where the moment of inertia I(x) is a given piecewise constant function of the coordinate x.
Besides the simple and practical means' (41) to shape p(t) from the piecewise constant seed u(t), the pulse p(t) has the remarkable property
n] (u) is a piecewise constant mapping of D into A which satisfies, at every (x, y, z) [member of] D,
Global stability and chaos in a population model with piecewise constant arguments.
Nonlinear dynamics of piecewise constant systems and implementation of piecewise constant arguments.
n] and if b represents the binary form of I, a piecewise constant function q with constant values [c.
To acquire an implementable input from SQP, Aziz and Mujtaba (2002) suggested using the piecewise constant input with variable time interval in CVP.
Approximation with the Haar wavelets is equivalent to the approximation with piecewise constant functions.

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