[texhax] a question for logicians

Eduardo eduardo.morais at videotron.ca
Fri May 2 17:21:43 CEST 2008

On Friday 02 May 2008 10:41, Alexandre Almeida wrote:
> It is a triangle made of 3 points, instead of lines. In a logic expression,
> it is used to give us the result. For exemplo if \exists ... therefore ...
>  How can I write this symbol?



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