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At:
prime factorization uniquea1 1. a : {2...}
2. b :
3. k:, g,h:({a..b}).
3. is_prime_factorization(a; b; g)
3.
3. is_prime_factorization(a; b; h)
3.
3. {a..b}(g) = k {a..b}(g) = {a..b}(h) g = h 4. g : {a..b}
5. h : {a..b}
6. is_prime_factorization(a; b; g)
7. is_prime_factorization(a; b; h)
8. {a..b}(g) = {a..b}(h)
g = h