I want to create an environment for examples that is structured exactly like the \begin{proof}...\end{proof} environment, i.e. starting with an italic "Example.", continuing in the same line and ending with a particular symbol to the far right, e.g. \clubsuit.

Edit: I am using amsthm package.

How do I do that, i.e. what is the code to be inserted at the beginning?

  • 3
    you could clone the proof environment, or you might get some help from this answer: Indicator at end of theorem. – barbara beeton Dec 2 '13 at 17:55
  • 1
    Hi, I do not know what it means to "clone" an environment. I have tried an analogous application of the solution provided in the thread you posted but that doesn't work, because apparently the commands \proofstyle and \newproof do not exist. I am sorry, I'm a greenhorn when it comes to things like defining my own stuff. :( – Holomorphic Dec 2 '13 at 18:25
  • I guess the ntheorem and thmtools packages can help a lot. They are a lot more flexible than amsthm. Could you indicate whether it is an option for you to use another package, instead of amsthm? – jmc Dec 2 '13 at 18:27
  • Do you need to number the examples? – egreg Dec 2 '13 at 18:52
  • Hi egreg, no that is not necessary. Just as simple as I described above. – Holomorphic Dec 2 '13 at 18:52

this example illustrates what i meant by "cloning" the amsthm proof environment. it retains the ability to use \qedhere to "move the end-symbol up" when the environment ends with a list or display math.


  \normalfont \topsep6\p@\@plus6\p@\relax



This is a proof.

This is an example.  It looks like a proof.

This example ends with a list.
\item item 1;
\item item 2. \qedhere

This example ends with display math.
x + y = z

Another proof


enter image description here

there are other ways to do this, but they are manual. one such uses the "optional header" feature of the proof environment, and resets the end-symbol just before it is used.


if \qedhere is needed, precede it directly by the \let\qedsymbol substitution.

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