<doc>

<newtheorem name="theorem" counter="theorem">Theorem</newtheorem>
<newtheorem name="proof">Proof</newtheorem>

<theorem>
    <dd>Lorem ipsum dolor sit amet.</dd>
</theorem>

<theorem>
    <dt>John McAuthor</dt>
    <dd>Lorem ipsum dolor sit amet.</dd>
</theorem>

<proof>
    <dd>Lorem ipsum dolor sit amet. <sub>&#x220e;</sub></dd>
</proof>

</doc>

