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| Mirrors > Home > MPE Home > Th. List > Mathboxes > csbrecsg | Structured version Visualization version GIF version | ||
| Description: Move class substitution in and out of recs. (Contributed by ML, 25-Oct-2020.) |
| Ref | Expression |
|---|---|
| csbrecsg | ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌recs(𝐹) = recs(⦋𝐴 / 𝑥⦌𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | csbwrecsg 8258 | . . 3 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌wrecs( E , On, 𝐹) = wrecs(⦋𝐴 / 𝑥⦌ E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹)) | |
| 2 | csbconstg 3872 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌ E = E ) | |
| 3 | wrecseq1 8255 | . . . 4 ⊢ (⦋𝐴 / 𝑥⦌ E = E → wrecs(⦋𝐴 / 𝑥⦌ E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹) = wrecs( E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹)) | |
| 4 | 2, 3 | syl 17 | . . 3 ⊢ (𝐴 ∈ 𝑉 → wrecs(⦋𝐴 / 𝑥⦌ E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹) = wrecs( E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹)) |
| 5 | csbconstg 3872 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌On = On) | |
| 6 | wrecseq2 8256 | . . . 4 ⊢ (⦋𝐴 / 𝑥⦌On = On → wrecs( E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹) = wrecs( E , On, ⦋𝐴 / 𝑥⦌𝐹)) | |
| 7 | 5, 6 | syl 17 | . . 3 ⊢ (𝐴 ∈ 𝑉 → wrecs( E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹) = wrecs( E , On, ⦋𝐴 / 𝑥⦌𝐹)) |
| 8 | 1, 4, 7 | 3eqtrd 2768 | . 2 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌wrecs( E , On, 𝐹) = wrecs( E , On, ⦋𝐴 / 𝑥⦌𝐹)) |
| 9 | df-recs 8301 | . . 3 ⊢ recs(𝐹) = wrecs( E , On, 𝐹) | |
| 10 | 9 | csbeq2i 3861 | . 2 ⊢ ⦋𝐴 / 𝑥⦌recs(𝐹) = ⦋𝐴 / 𝑥⦌wrecs( E , On, 𝐹) |
| 11 | df-recs 8301 | . 2 ⊢ recs(⦋𝐴 / 𝑥⦌𝐹) = wrecs( E , On, ⦋𝐴 / 𝑥⦌𝐹) | |
| 12 | 8, 10, 11 | 3eqtr4g 2789 | 1 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌recs(𝐹) = recs(⦋𝐴 / 𝑥⦌𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ⦋csb 3853 E cep 5522 Oncon0 6311 wrecscwrecs 8251 recscrecs 8300 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5238 ax-nul 5248 ax-pr 5374 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-br 5096 df-opab 5158 df-xp 5629 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-pred 6253 df-iota 6442 df-fv 6494 df-ov 7356 df-frecs 8221 df-wrecs 8252 df-recs 8301 |
| This theorem is referenced by: csbrdgg 37302 |
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