I disagree; keep it as 'IS' - going with the gramatically correct choice would completely throw off the Lennon cadence.

Actually, with rhythmic considerations in mind, maybe change it to 'A glove (sing) is all you need' not 'gloves is' (plural)

i'm saying that a facile statement like "a thing divided by a third of itself equals three" (x/x/3)=3) isn't a (mathematical) theorem AT ALL, but a mere logical/notational (if not grammatical) truism. mathematics is interesting because it can make conclusions about things that aren't immediately obvious. statements that are tautologic like 1=1 are, strictly speaking, mathematically uninteresting, and it does a disservice to serious thought to call such things math.

if you want to take the euclidean view, and say that ALL math is a priori and analytic (ie based fundamentally on logical axioms), then you should go back and live with Newton in the 17th century. Non-euclidean spaces, Einstein and a fellow named Kurt Godel have proven false the notion that logic and math are identical.

ok I'll stop ranting now, b/c it's way past the point of being helpful to the poem :)

that's like saying poetry is art; art is poetry - an altogether facile/reductionist statement. we're supposed to be precise with language here - calling math and logic the same thing is too flip for my taste.

ps both words are greek in origin (logos - 'word' or 'study'; math - from word meaning 'understanding'); why bother with two words if they mean the same thing?

yes, I see that of course -- I'm just saying your title gives mathematicians a bad name. I would call it "Logic Poem."

Those who find phalluses (phalli?) in everything have their heads up their ass. It happens to be a very useful shape, whether for cocks, rockets, train tunnels, or rifles. That's all it is - a useful shape. The world needs to get over it.