(to the tune of Old MacDonald)
Ol' Don Goldberg had a field, eiπ+1
In that field there was a ring, eiπ+1
With a product here, and a prime divisor there
p is prime, UFD, p divides a or b
Ol' Don Goldberg had a field, eiπ+1
Ol' Gon Doldberg had some stamps, eiπ+1
Their GCD was seventeen, eiπ+1
With an Ax here and a By there
Ax, By, mail a letter anywhere
Ol' Gon Doldberg had some stamps, eiπ+1
Ol' Gol Donberg had a group, eiπ+1
The group had order phi of n, eiπ+1
With a subgroup here and a generator there
Here a theorem, there a theorem, even Fermat's Little Theorem
Ol' Gol Donberg had a group, eiπ+1
Ol' Berg Goldon had a map, eiπ+1
And on the map there were countries, eiπ+1
With a color here, and a color there
Takes four colors everywhere
Ol' Berg Goldon had a map, eiπ+1
Ol' Derg BonBon had a plane, eiπ+1
And on the plane there was a line, eiπ+1
Off that line there was a point, eiπ+1
Through that point a parallel, and there was but one!