IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
prime factorization includes prime divisors12 1. a :
2. b :
3. f : {a..b}
4. p :
5. is_prime_factorization(a; b; f)
6. prime(p)
7. p | ( i:{a..b}. if(i))
8. i:{a..b}. p | if(i)
p {a..b} & 0<f(p)