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I encountered this symbol in an old Adobe mathematical character set, and I'm trying to identify it. I can't find it on Wikipedia's list of mathematical symbols, and it's difficult to describe it for the purposes of a Google search.

Here is an image:

enter image description here

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And ... What now? What's your question? – Gigili Dec 28 '11 at 20:34
I've been trying to draw it at but with no luck so far. – Qiaochu Yuan Dec 28 '11 at 20:35
@Gigili, my question is: what does this symbol mean? – Channel72 Dec 28 '11 at 20:36
This might help: – HbCwiRoJDp Dec 28 '11 at 20:37
It would possibly be easier if you could provide some context that you have seen this symbol in. – Henning Makholm Dec 28 '11 at 20:38
up vote 3 down vote accepted

This looks like U+03D0 GREEK BETA SYMBOL. See the unicode chart containing it.

Apparently it's just a typographical variant of $\beta$ that someone may have used for some particular purpose, like some distinguish $\phi/\varphi$, $\epsilon/\varepsilon$, $\theta/\vartheta$.

See also this mailing list thread. It seems to be unknown whether this symbol ever had any mathematical use.

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Good eye, @Henning :-) – robjohn Dec 28 '11 at 20:59

According to this PDF, the unicode for this character is 0x3D0, which is The Greek Beta Symbol (an alternate).

Here it is in $\LaTeX$: $\Huge\unicode{x3d0}$.

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This looks like a third form of beta to me. =) – Srivatsan Dec 30 '11 at 11:54
@Srivatsan: $\unicode{x0392}$, $\unicode{x03B2}$, and $\unicode{x03D0}$? – robjohn Dec 30 '11 at 14:25
Ah, it's my computer's fault. My laptop and desktop machine render the symbol in your answer differently. – Srivatsan Dec 30 '11 at 18:15

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