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Mirrors > Home > MPE Home > Th. List > dffin7-2 | Structured version Visualization version GIF version |
Description: Class form of isfin7-2 9101. (Contributed by Mario Carneiro, 17-May-2015.) |
Ref | Expression |
---|---|
dffin7-2 | ⊢ FinVII = (Fin ∪ (V ∖ dom card)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | imor 427 | . . 3 ⊢ ((𝑥 ∈ dom card → 𝑥 ∈ Fin) ↔ (¬ 𝑥 ∈ dom card ∨ 𝑥 ∈ Fin)) | |
2 | vex 3176 | . . . 4 ⊢ 𝑥 ∈ V | |
3 | isfin7-2 9101 | . . . 4 ⊢ (𝑥 ∈ V → (𝑥 ∈ FinVII ↔ (𝑥 ∈ dom card → 𝑥 ∈ Fin))) | |
4 | 2, 3 | ax-mp 5 | . . 3 ⊢ (𝑥 ∈ FinVII ↔ (𝑥 ∈ dom card → 𝑥 ∈ Fin)) |
5 | elun 3715 | . . . 4 ⊢ (𝑥 ∈ (Fin ∪ (V ∖ dom card)) ↔ (𝑥 ∈ Fin ∨ 𝑥 ∈ (V ∖ dom card))) | |
6 | orcom 401 | . . . 4 ⊢ ((𝑥 ∈ Fin ∨ 𝑥 ∈ (V ∖ dom card)) ↔ (𝑥 ∈ (V ∖ dom card) ∨ 𝑥 ∈ Fin)) | |
7 | eldif 3550 | . . . . . 6 ⊢ (𝑥 ∈ (V ∖ dom card) ↔ (𝑥 ∈ V ∧ ¬ 𝑥 ∈ dom card)) | |
8 | 2, 7 | mpbiran 955 | . . . . 5 ⊢ (𝑥 ∈ (V ∖ dom card) ↔ ¬ 𝑥 ∈ dom card) |
9 | 8 | orbi1i 541 | . . . 4 ⊢ ((𝑥 ∈ (V ∖ dom card) ∨ 𝑥 ∈ Fin) ↔ (¬ 𝑥 ∈ dom card ∨ 𝑥 ∈ Fin)) |
10 | 5, 6, 9 | 3bitri 285 | . . 3 ⊢ (𝑥 ∈ (Fin ∪ (V ∖ dom card)) ↔ (¬ 𝑥 ∈ dom card ∨ 𝑥 ∈ Fin)) |
11 | 1, 4, 10 | 3bitr4i 291 | . 2 ⊢ (𝑥 ∈ FinVII ↔ 𝑥 ∈ (Fin ∪ (V ∖ dom card))) |
12 | 11 | eqriv 2607 | 1 ⊢ FinVII = (Fin ∪ (V ∖ dom card)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 195 ∨ wo 382 = wceq 1475 ∈ wcel 1977 Vcvv 3173 ∖ cdif 3537 ∪ cun 3538 dom cdm 5038 Fincfn 7841 cardccrd 8644 FinVIIcfin7 8989 |
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 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 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-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-om 6958 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-card 8648 df-fin7 8996 |
This theorem is referenced by: dfacfin7 9104 |
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