Lemma tree very pretty And the lemmas are all true. But the proof of the last lemma Is impossible to do.
A pedantic grammarian once said "Here's a great spec language called Z. But it's from Britain, you see, So please don't call it 'zee', A name up with which I am fed. My referee said, "Make a correction, Or your paper will get a rejection. It turns me quite pale Seeing two heads, ribs, one tail. So please get rid of that finite bijection." >-||->>
for ZUM, Limerick, Summer 1995