# User talk:Edsanville

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$\begin{array}{lll} \int \mathrm{d}^3 x \frac{1}{|\mathbf{x}|} e^{- \mathrm{i} \mathbf{q} \cdot \mathbf{x}} & = & \lim_{u \rightarrow 0} \int \mathrm{d}^3 x \frac{\exp \left( - u \left| \mathbf{x} \right| \right)}{\left| \mathbf{x} \right|} e^{- \mathrm{i} \mathbf{q} \cdot \mathbf{x}}\\ & = & \lim_{u \rightarrow 0} \int_0^\infty \mathrm{d} r \int_{-1}^1 \mathrm{d} \cos \vartheta 2 \pi r^2 \frac{\exp \left( - ur \right)}{r} e^{- \mathrm{i} q r \cos \vartheta}\\ & = & 2 \pi \lim_{u \rightarrow 0} \int_0^\infty \mathrm{d} r \int_{-1}^1 \mathrm{d}s r \exp \left( - r \left( u + \mathrm{i} q s \right) \right)\\ & = & \frac{2 \pi}{-\mathrm{i} q} \lim_{u \rightarrow 0} \int_0^\infty \mathrm{d} r \left[ \exp \left( - r \left( u + s \mathrm{i} q \right) \right)\right]_{-1}^1\\ & = & \frac{2 \pi \mathrm{i}} {q} \lim_{u \rightarrow 0} \left[ \frac{1}{u + s \mathrm{i} q } \right]_{-1}^1 \\ & = & \frac{2 \pi \mathrm{i}} {q} \frac{2} {\mathrm{i} q} \\ & = & \frac{4 \pi}{q^2 } \end{array}$

## Unreferenced BLPs

Hello Edsanville! Thank you for your contributions. I am a bot alerting you that 2 of the articles that you created are tagged as Unreferenced Biographies of Living Persons. The biographies of living persons policy requires that all personal or potentially controversial information be sourced. In addition, to insure verifiability, all biographies should be based on reliable sources. if you were to bring these articles up to standards, it would greatly help us with the current 1,918 article backlog. Once the articles are adequately referenced, please remove the {{unreferencedBLP}} tag. Here is the list:

1. Cliff Williams - Find sources: "Cliff Williams" – news · newspapers · books · scholar · JSTOR · free images
2. Chris Slade - Find sources: "Chris Slade" – news · newspapers · books · scholar · JSTOR · free images

Thanks!--DASHBot (talk) 21:21, 8 January 2010 (UTC)

## Proposed Image Deletion

A deletion discussion has just been created at Category talk:Unclassified Chemical Structures, which may involve one or more orphaned chemical structures, that has you user name in the upload history. Please feel free to add your comments.  Ronhjones  (Talk) 22:52, 10 June 2011 (UTC)