Shorten well-ordered recursion #4403
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What version of metamath-exe are we using for PRs? I'm on the latest branch from git and it's not doing a rewrap for me. |
https://github.com/metamath/set.mm/actions/runs/11896165033/job/33147444740#step:8:7 says |
benjub
approved these changes
Nov 18, 2024
| ${ | ||
| $d A f x y z $. $d R f x y z $. $d G f x y z $. $d X f x y z $. | ||
| $d F y z $. | ||
| frrrel.1 $e |- F = frecs ( R , A , G ) $. |
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Isn't there one too many "r" in that label ?
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I don't think so - founded-relationship (fr) recursion (r) relationship (rel)
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I was thinking of "well-founded recursion gives a relation".
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This usage matches frr1, frr2, and frr3 though
benjub
approved these changes
Nov 18, 2024
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This PR brings in the new definition of wrecs that BJ proved in his mathbox. It's now the official definition and the old one is marked discouraged. All the well-ordered recursion theorems are reproved using the new definition, the lemmas are obsoleted, and a new family of frecs theorems that avoid ax-rep are brought in.