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| Mirrors > Home > MPE Home > Th. List > uniwun | Structured version Visualization version GIF version | ||
| Description: Every set is contained in a weak universe. This is the analogue of grothtsk 10746 for weak universes, but it is provable in ZF without the Tarski-Grothendieck axiom, contrary to grothtsk 10746. (Contributed by Mario Carneiro, 2-Jan-2017.) |
| Ref | Expression |
|---|---|
| uniwun | ⊢ ∪ WUni = V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqv 3450 | . 2 ⊢ (∪ WUni = V ↔ ∀𝑥 𝑥 ∈ ∪ WUni) | |
| 2 | vsnex 5379 | . . . 4 ⊢ {𝑥} ∈ V | |
| 3 | wunex 10650 | . . . 4 ⊢ ({𝑥} ∈ V → ∃𝑢 ∈ WUni {𝑥} ⊆ 𝑢) | |
| 4 | 2, 3 | ax-mp 5 | . . 3 ⊢ ∃𝑢 ∈ WUni {𝑥} ⊆ 𝑢 |
| 5 | eluni2 4867 | . . . 4 ⊢ (𝑥 ∈ ∪ WUni ↔ ∃𝑢 ∈ WUni 𝑥 ∈ 𝑢) | |
| 6 | vex 3444 | . . . . . 6 ⊢ 𝑥 ∈ V | |
| 7 | 6 | snss 4741 | . . . . 5 ⊢ (𝑥 ∈ 𝑢 ↔ {𝑥} ⊆ 𝑢) |
| 8 | 7 | rexbii 3083 | . . . 4 ⊢ (∃𝑢 ∈ WUni 𝑥 ∈ 𝑢 ↔ ∃𝑢 ∈ WUni {𝑥} ⊆ 𝑢) |
| 9 | 5, 8 | bitri 275 | . . 3 ⊢ (𝑥 ∈ ∪ WUni ↔ ∃𝑢 ∈ WUni {𝑥} ⊆ 𝑢) |
| 10 | 4, 9 | mpbir 231 | . 2 ⊢ 𝑥 ∈ ∪ WUni |
| 11 | 1, 10 | mpgbir 1800 | 1 ⊢ ∪ WUni = V |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ∈ wcel 2113 ∃wrex 3060 Vcvv 3440 ⊆ wss 3901 {csn 4580 ∪ cuni 4863 WUnicwun 10611 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-inf2 9550 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7361 df-om 7809 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-wun 10613 |
| This theorem is referenced by: (None) |
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