A delta sequence is a sequence of strongly peaked functions
for which

(1)

so that in the limit as ,
the sequences become delta functions.
Examples include
(Arfken 1985, pp. 482 and 488489).
See also
Delta Function
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References
Arfken, G. Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, 1985.Referenced
on WolframAlpha
Delta Sequence
Cite this as:
Weisstein, Eric W. "Delta Sequence." From
MathWorldA Wolfram Web Resource. https://mathworld.wolfram.com/DeltaSequence.html
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