Nuprl - Proof: gcd sym 1 1 1 1

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At: gcd sym 1 1 1 1

1. a :

2. b :

3. y1 :

4. GCD(a;b;y1)
5. gcd(a;b) = y1
6. y2 :

7. GCD(b;a;y2)
8. gcd(b;a) = y2
9. GCD(a;b;y2)
10. y1 ~ y2

gcd(a;b) ~ gcd(b;a)

By:

RelRST

Generated subgoals:

None

About:

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html