When I read mathy poems by non-maths often I am intrigued by their alterations of correct mathematical statements -- part of "poetic license." Non-maths can use intriguing language that I, with my mathematics background, could not allow myself to say. For example, George David Clark's poem "Kiss Over Zero" has this opening line:
anything over zero is zero
I was delighted to find in this math-themed group several old favorites, one of which is "Counting" by Douglas Goetsch -- a poem among those Sarah Glaz and I gathered a few years back for the anthology, Strange Attractors: Poems of Love and Mathematics (A K Peters / CRC Press, 2008) -- now available as an e-book.