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I know how to enter the end of proof boxes in LyX:

\square, \blacksquare. However, I don't like where it ends up in the PDF. Here's an example

enter image description here

I want it to mock the example below (cropped from Munkres' Topology)

enter image description here

How do I do this? This is how I currently enter boxes in LyX: enter image description here

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3  
If you load amsthm you have a proof environment that adds the tombstone automatically. Just change the meaning of \qedsymbol to $\blacksquare$. –  egreg Mar 28 '13 at 10:28
    
Could you add a screenshot of how you've set it up currently (from LyX)? Answers will vary depending on how you're doing it (for example, \hfill may be what you're looking for). –  Sean Allred Mar 28 '13 at 14:45
    
@SeanAllred,I've just added the screenshot. I just typed \hfill in mathmode and nothing happened. I will look into what that actually means. –  The Substitute Mar 28 '13 at 18:20
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@TheSubstitute go to Document Settings > Modules and select Theorems (AMS). Click on "Add". To add stuff to the preamble, go to Document Settings > LaTeX Preamble. –  scottkosty Mar 28 '13 at 19:20
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\renewcommand{\qedsymbol}{$\blacksquare$} is the standard way to get a black tombstone instead of a hollow one. –  egreg Mar 28 '13 at 22:14
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closed as unclear what you're asking by Joseph Wright Aug 11 '13 at 10:42

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