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Mirrors > Home > MPE Home > Th. List > Mathboxes > nfwsuc | Structured version Visualization version GIF version |
Description: Bound-variable hypothesis builder for well-founded successor. (Contributed by Scott Fenton, 13-Jun-2018.) (Proof shortened by AV, 10-Oct-2021.) |
Ref | Expression |
---|---|
nfwsuc.1 | ⊢ Ⅎ𝑥𝑅 |
nfwsuc.2 | ⊢ Ⅎ𝑥𝐴 |
nfwsuc.3 | ⊢ Ⅎ𝑥𝑋 |
Ref | Expression |
---|---|
nfwsuc | ⊢ Ⅎ𝑥wsuc(𝑅, 𝐴, 𝑋) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-wsuc 33099 | . 2 ⊢ wsuc(𝑅, 𝐴, 𝑋) = inf(Pred(◡𝑅, 𝐴, 𝑋), 𝐴, 𝑅) | |
2 | nfwsuc.1 | . . . . 5 ⊢ Ⅎ𝑥𝑅 | |
3 | 2 | nfcnv 5749 | . . . 4 ⊢ Ⅎ𝑥◡𝑅 |
4 | nfwsuc.2 | . . . 4 ⊢ Ⅎ𝑥𝐴 | |
5 | nfwsuc.3 | . . . 4 ⊢ Ⅎ𝑥𝑋 | |
6 | 3, 4, 5 | nfpred 6153 | . . 3 ⊢ Ⅎ𝑥Pred(◡𝑅, 𝐴, 𝑋) |
7 | 6, 4, 2 | nfinf 8946 | . 2 ⊢ Ⅎ𝑥inf(Pred(◡𝑅, 𝐴, 𝑋), 𝐴, 𝑅) |
8 | 1, 7 | nfcxfr 2975 | 1 ⊢ Ⅎ𝑥wsuc(𝑅, 𝐴, 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: Ⅎwnfc 2961 ◡ccnv 5554 Predcpred 6147 infcinf 8905 wsuccwsuc 33097 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-xp 5561 df-cnv 5563 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-sup 8906 df-inf 8907 df-wsuc 33099 |
This theorem is referenced by: (None) |
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