IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
gcd is gcd11 1. a : 2. b : 3. c : 4. c | a 5. c | b 6. y : 7. GCD(a;b;y)
c | y
By:
Unfold `gcd_p` -1 THEN HypBackchain
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html