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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 32349 | . . 3 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌wrecs( E , On, 𝐹) = wrecs(⦋𝐴 / 𝑥⦌ E , ⦋𝐴 / 𝑥⦌On, ⦋𝐴 / 𝑥⦌𝐹)) | |
2 | csbconstg 3512 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌ E = E ) | |
3 | wrecseq1 7297 | . . . 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 3512 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌On = On) | |
6 | wrecseq2 7298 | . . . 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 2648 | . 2 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌wrecs( E , On, 𝐹) = wrecs( E , On, ⦋𝐴 / 𝑥⦌𝐹)) |
9 | df-recs 7355 | . . 3 ⊢ recs(𝐹) = wrecs( E , On, 𝐹) | |
10 | 9 | csbeq2i 3945 | . 2 ⊢ ⦋𝐴 / 𝑥⦌recs(𝐹) = ⦋𝐴 / 𝑥⦌wrecs( E , On, 𝐹) |
11 | df-recs 7355 | . 2 ⊢ recs(⦋𝐴 / 𝑥⦌𝐹) = wrecs( E , On, ⦋𝐴 / 𝑥⦌𝐹) | |
12 | 8, 10, 11 | 3eqtr4g 2669 | 1 ⊢ (𝐴 ∈ 𝑉 → ⦋𝐴 / 𝑥⦌recs(𝐹) = recs(⦋𝐴 / 𝑥⦌𝐹)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1475 ∈ wcel 1977 ⦋csb 3499 E cep 4947 Oncon0 5640 wrecscwrecs 7293 recscrecs 7354 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-fal 1481 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-xp 5044 df-cnv 5046 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-iota 5768 df-fv 5812 df-wrecs 7294 df-recs 7355 |
This theorem is referenced by: csbrdgg 32351 |
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