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Mirrors > Home > ILE Home > Th. List > sbcco3g | Unicode version |
Description: Composition of two substitutions. (Contributed by NM, 27-Nov-2005.) (Revised by Mario Carneiro, 11-Nov-2016.) |
Ref | Expression |
---|---|
sbcco3g.1 |
Ref | Expression |
---|---|
sbcco3g |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sbcnestg 3102 | . 2 | |
2 | elex 2741 | . . 3 | |
3 | nfcvd 2313 | . . . 4 | |
4 | sbcco3g.1 | . . . 4 | |
5 | 3, 4 | csbiegf 3092 | . . 3 |
6 | dfsbcq 2957 | . . 3 | |
7 | 2, 5, 6 | 3syl 17 | . 2 |
8 | 1, 7 | bitrd 187 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 wceq 1348 wcel 2141 cvv 2730 wsbc 2955 csb 3049 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-ext 2152 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-v 2732 df-sbc 2956 df-csb 3050 |
This theorem is referenced by: fzshftral 10057 |
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