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Delta function

A mathematical generalised function that can be regarded as the limit of any several sequences of continuous function. It also has the "sifting " property where the delta function "picks out" the value of a function at t0 if it is multiplied by the function and integrated over all time. A final definition is the derivative of of a step function since it is zero except "near" t0 when it goes to infinity. Also known as a impulse.

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  • Category: Seismology
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