Quis custodiet ipsos custodes?
The proof checker.
You verify a proof system by having it produce a proof trace:
- Step 3185: Apply rule that a * b = b * a to "length * width" in the current formula.
Then you run a proof trace checker which applies each transformation in sequence and checks that the expected result is obtained.
Provers are complicated, but proof trace checkers are really dumb.
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The proof checker.
You verify a proof system by having it produce a proof trace:
- Step 3185: Apply rule that a * b = b * a to "length * width" in the current formula.
Then you run a proof trace checker which applies each transformation in sequence and checks that the expected result is obtained.
Provers are complicated, but proof trace checkers are really dumb.