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Mirrors > Home > MPE Home > Th. List > Mathboxes > bnj985v | Structured version Visualization version GIF version |
Description: Version of bnj985 32245 with an additional disjoint variable condition, not requiring ax-13 2389. (Contributed by Gino Giotto, 27-Mar-2024.) (New usage is discouraged.) |
Ref | Expression |
---|---|
bnj985v.3 | ⊢ (𝜒 ↔ (𝑛 ∈ 𝐷 ∧ 𝑓 Fn 𝑛 ∧ 𝜑 ∧ 𝜓)) |
bnj985v.6 | ⊢ (𝜒′ ↔ [𝑝 / 𝑛]𝜒) |
bnj985v.9 | ⊢ (𝜒″ ↔ [𝐺 / 𝑓]𝜒′) |
bnj985v.11 | ⊢ 𝐵 = {𝑓 ∣ ∃𝑛 ∈ 𝐷 (𝑓 Fn 𝑛 ∧ 𝜑 ∧ 𝜓)} |
bnj985v.13 | ⊢ 𝐺 = (𝑓 ∪ {〈𝑛, 𝐶〉}) |
Ref | Expression |
---|---|
bnj985v | ⊢ (𝐺 ∈ 𝐵 ↔ ∃𝑝𝜒″) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bnj985v.13 | . . . 4 ⊢ 𝐺 = (𝑓 ∪ {〈𝑛, 𝐶〉}) | |
2 | 1 | bnj918 32056 | . . 3 ⊢ 𝐺 ∈ V |
3 | bnj985v.3 | . . . 4 ⊢ (𝜒 ↔ (𝑛 ∈ 𝐷 ∧ 𝑓 Fn 𝑛 ∧ 𝜑 ∧ 𝜓)) | |
4 | bnj985v.11 | . . . 4 ⊢ 𝐵 = {𝑓 ∣ ∃𝑛 ∈ 𝐷 (𝑓 Fn 𝑛 ∧ 𝜑 ∧ 𝜓)} | |
5 | 3, 4 | bnj984 32243 | . . 3 ⊢ (𝐺 ∈ V → (𝐺 ∈ 𝐵 ↔ [𝐺 / 𝑓]∃𝑛𝜒)) |
6 | 2, 5 | ax-mp 5 | . 2 ⊢ (𝐺 ∈ 𝐵 ↔ [𝐺 / 𝑓]∃𝑛𝜒) |
7 | sbcex2 3829 | . . 3 ⊢ ([𝐺 / 𝑓]∃𝑝𝜒′ ↔ ∃𝑝[𝐺 / 𝑓]𝜒′) | |
8 | nfv 1914 | . . . . . . 7 ⊢ Ⅎ𝑝𝜒 | |
9 | 8 | sb8ev 2373 | . . . . . 6 ⊢ (∃𝑛𝜒 ↔ ∃𝑝[𝑝 / 𝑛]𝜒) |
10 | sbsbc 3772 | . . . . . . 7 ⊢ ([𝑝 / 𝑛]𝜒 ↔ [𝑝 / 𝑛]𝜒) | |
11 | 10 | exbii 1847 | . . . . . 6 ⊢ (∃𝑝[𝑝 / 𝑛]𝜒 ↔ ∃𝑝[𝑝 / 𝑛]𝜒) |
12 | 9, 11 | bitri 277 | . . . . 5 ⊢ (∃𝑛𝜒 ↔ ∃𝑝[𝑝 / 𝑛]𝜒) |
13 | bnj985v.6 | . . . . 5 ⊢ (𝜒′ ↔ [𝑝 / 𝑛]𝜒) | |
14 | 12, 13 | bnj133 32016 | . . . 4 ⊢ (∃𝑛𝜒 ↔ ∃𝑝𝜒′) |
15 | 14 | sbcbii 3824 | . . 3 ⊢ ([𝐺 / 𝑓]∃𝑛𝜒 ↔ [𝐺 / 𝑓]∃𝑝𝜒′) |
16 | bnj985v.9 | . . . 4 ⊢ (𝜒″ ↔ [𝐺 / 𝑓]𝜒′) | |
17 | 16 | exbii 1847 | . . 3 ⊢ (∃𝑝𝜒″ ↔ ∃𝑝[𝐺 / 𝑓]𝜒′) |
18 | 7, 15, 17 | 3bitr4i 305 | . 2 ⊢ ([𝐺 / 𝑓]∃𝑛𝜒 ↔ ∃𝑝𝜒″) |
19 | 6, 18 | bitri 277 | 1 ⊢ (𝐺 ∈ 𝐵 ↔ ∃𝑝𝜒″) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 ∧ w3a 1082 = wceq 1536 ∃wex 1779 [wsb 2068 ∈ wcel 2113 {cab 2798 ∃wrex 3138 Vcvv 3491 [wsbc 3768 ∪ cun 3927 {csn 4560 〈cop 4566 Fn wfn 6343 ∧ w-bnj17 31975 |
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 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2792 ax-sep 5196 ax-nul 5203 ax-pr 5323 ax-un 7454 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1084 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-clab 2799 df-cleq 2813 df-clel 2892 df-nfc 2962 df-rex 3143 df-v 3493 df-sbc 3769 df-dif 3932 df-un 3934 df-in 3936 df-ss 3945 df-nul 4285 df-sn 4561 df-pr 4563 df-uni 4832 df-bnj17 31976 |
This theorem is referenced by: bnj1018 32255 |
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