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Is there a calligraphic form for $\exists$ and other logic quantifiers? I tried the approach in this answer but that only gives the usual font for this symbol.

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What do you mean by ‘calligraphic’? Can you point to some source? –  egreg Nov 5 '13 at 18:07
    
I do not have an exact definition. Something on the artistic/elaborate side and other than the plain inverted E. –  Maesumi Nov 5 '13 at 18:15
    
If you load graphicx package you could try this: \newcommand\calexists{\rotatebox[origin=c]{180}{$\mathcal{E}$}} but (in my opinion) it does not look very nice with the E in the mathcal font. The A is slightly better. –  Thruston Nov 5 '13 at 20:17
    
@Thruston Thanks for the code. I was afraid that would be the only option! How would your code be changed if one were to flip, as in $x\to -x$, instead of rotate by 180? –  Maesumi Nov 5 '13 at 20:34
    
\newcommand*{\calexists}{\reflectbox{$\exists$}} –  Harish Kumar Nov 5 '13 at 22:36

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