s-TODO
Doing
0 is a natural number
|- for all x { x = x }
|- for all x, y { x = y -> y = x }
|- for all x, y, z { x = y & y = z -> x = z }
|- for all x { S(x) is a natural number }
|- for all x, y { S(x) = S(y) -> x = y }
|- for all x { 0 != S(x) }
let φ any predicate, φ(0); φ(x) -> φ(x + 1) |- for all x φ(x)
Formalize the first theorems in ASTs
2 + 2 = 4
Use Peano Postulates
Decide first N(now 8) theorems - done
2 + 2 = 4 ( in Peano axioms )