More fun with bad lyrics...

(Sung to the tune of "Do-Re-Mi" from The Sound of Music)

Let's start at the very beginning
The very best place to start
When you read you begin with A, B, C
When you add you begin with 1, 2, 3
(1, 2, 3)
1, 2, 3
The first three Natural Numbers just happen to be
1, 2, 3
mc^2 must equal E...

Null, a set, an empty set
Ray, direction on a plane
Mean, the sum above the count
Prime is just one and the same
Slope, the tangent to an arc
Cord, a convex test for slope
Force, derivative of Work
And that will bring us back to Null