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Undoing the last skip turns out to be insufficient in general. One has to re-do the skip after the box symbol. I forgot to do it either while unskipping a wildly guessed amount. Any idea how? sure ;) \newlength\mylastskip \newcommand*{\qedEndingNonProofAfterTikzCenter}{% \setlength\mylastskip{\last...

ah, there's no such redefinition after all.
Try
(notice the "this")

KR
Rainer

doubtful, but then, I don't use Lyx. From your description you've already changed the standard behavior of scrbook (pages starting a chapter don't usually contain a header, and you claim to have it on all pages). And by the sound of it you've redefined plain, even empty page style. To see how, pleas...

svmono can be found at Springer 's ( http://static.springer.com/sgw/documents/72921/application/zip/svmono.zip ) That's an old one from 2009. The new one from this year is available using the link in the code in the OP, which boils down to getting https://resource-cms.springernature.com/springer-cm...

Sometimes you wish to denote the end of the example. I do it in a compact way by placing a QED-like symbol at the end. what I meant was, wouldn't it be confusing for your readers putting a QED symbol somewhat out of context? But, this is a much more cumbersome, LaTeX way, and it leaves less horizon...

svmono can be found at Springer's
(http://static.springer.com/sgw/documents/72921/application/zip/svmono.zip)

KR
Rainer

What about \hfill\QEDendingNonProofSymbol at the end ? Let me put it this way: if I calculated the width for the minipage right, \hfill or not shouldn't make a difference. You could instead exchange the center with a flushright environment and omit the \hspace{\QEDSymbolSpace} before the minipage ....

I didn't understand the benefit of putting a `proof' symbol into an example environment; all that even for a Springer class, which I find highly unusual to be tinkered with. Anyway, my idea would be to put everything but the qed symbol into a minipage , align it to the bottom, and put the qed symbol...

(I suppose you meant dvipdf) No, I meant dvips / ps2pdf to get---just in case---the postscript file, as well. But since your dvipdf (and I suppose you meant dvipdfm or dvipdfmx) already worked, you don't need to go that way. Does anybody know how to fix this? I think it would be prudent to show us ...

Not necessarily. If you really need to run your code on different LaTeX-distro versions, you could try \makeatletter \@ifundefined{counterwithin}{\usepackage{chngcntr}}{} \makeatother that should load chngcntr only if \counterwithin isn't defined. Or you could load amsmath and use its \numberwithin ...