I’ve become rather quite fond of thee.
From $\pi_n$ an oasis,
counting holes in weird spaces,
you’re such a great part of topology!
although I only know of three:
simplicial to singular,
the third is called cellular,
they're all just making me so happy.
labeling things up to homotopy.
With Mayer and Vietoris,
no van-Kampens on your list,
you've the right smidgen of group theory.
“What’s that?” I ask, “What’s this I see?”
Your arrows have changed,
your indices rearranged.
Oh no! You've been hit with duality!
you’re starting to bewilder me.
Co-this and co-that,
it’s hard to keep co-track.
I think I’d just rather write poetry.