<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>The Hasse diagram for a partially ordered set is a tree. </div></blockquote><div><br></div><div>No, it's not. Or at least, not if I understand your terms correctly. If there are three candidates [ABC], and all vote types exist, then is [A] a leaf on the [AB] branch or on the [AC] branch?</div>
<div><br></div><div> JQ</div></div>