How to write a dirac delta symbol in LaTeX?

Asked Oct 17 '12 at 20:26

Active Oct 17 '12 at 20:35

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Possible Duplicate:
How to look up a symbol?

I mean the squiggle d_{ij} Dirac Delta thing but I am not sure how to put the notation for it. Does anyone know?

edited Apr 13 '17 at 12:34

Community

asked Oct 17 '12 at 20:26

Magpie

14

$\delta_{ij}$ ? – egreg Oct 17 '12 at 20:29
4

I would consider this a duplicate of How to look up a symbol?, since Detexify drops out \delta as the first choice, and it's easily identifiable in the Comprehensive LaTeX symbol list. Just waiting for feedback from @Magpie. – Werner Oct 17 '12 at 20:33
no @egreg that is a delta. – Magpie Oct 17 '12 at 20:41
Thanks @Werner I found it that way. I will bookmark that site! – Magpie Oct 17 '12 at 20:41
@Magpie: If it is not \delta, what is it then? Do you have a reference? I'm looking at this Wikipedia page: Dirac delta function – Werner Oct 17 '12 at 20:43
I was just about to put it up. Also it was a delta I was thinking that could only be used with derivatives but it is the same one. – Magpie Oct 17 '12 at 20:46
In the Wikipedia article a regular delta is used as well. It is upshape however, so it may look different (you can use package upgreek en \updelta). Also: most people use \partial for derivatives. – Silke Oct 17 '12 at 21:17

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