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Nov
20
asked Asymptotic expansion of modified bessel function of imaginary order
Nov
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asked Integral of product of modified bessel functions
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comment Calculating an integral with a delta evaluated at one of its end-points
I thought of the following to justify this: I can integrate from $-\infty$ to $+\infty$ and multiply the integral by $\theta(k)$. Then the $\delta$ picks up $\theta(0)$ which usually is defined as 1/2.
Sep
4
comment Calculating an integral with a delta evaluated at one of its end-points
It is the usual definition of $ \delta(x)$, like in eq. 31 here: mathworld.wolfram.com/DeltaFunction.html
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asked Calculating an integral with a delta evaluated at one of its end-points
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answered What are some common proof strategies in mathematics?