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by carte_apuces
Mon Aug 06, 2012 11:56 pm
Forum: Page Layout
Topic: Vertical Line left of Proofs
Replies: 2
Views: 9974

Vertical Line left of Proofs

Hi everybody,

I'm sorry to disturb you with probably such an easy thing, but I just begin to use LaTeX and I would like to put a vertical line on the left of every mathematical proof I do (please see the attached example). How can I do in math mode?


Thank you,
Vince

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