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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:

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2 Answers

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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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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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