| Mathbox for Rohan Ridenour |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > gruex | Structured version Visualization version GIF version | ||
| Description: Assuming the Tarski-Grothendieck axiom, every set is contained in a Grothendieck universe. (Contributed by Rohan Ridenour, 13-Aug-2023.) |
| Ref | Expression |
|---|---|
| gruex | ⊢ ∃𝑦 ∈ Univ 𝑥 ∈ 𝑦 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rankon 9707 | . . 3 ⊢ (rank‘𝑥) ∈ On | |
| 2 | inaex 44538 | . . 3 ⊢ ((rank‘𝑥) ∈ On → ∃𝑧 ∈ Inacc (rank‘𝑥) ∈ 𝑧) | |
| 3 | 1, 2 | ax-mp 5 | . 2 ⊢ ∃𝑧 ∈ Inacc (rank‘𝑥) ∈ 𝑧 |
| 4 | simplr 768 | . . . . . 6 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → (rank‘𝑥) ∈ 𝑧) | |
| 5 | inawina 10601 | . . . . . . . . 9 ⊢ (𝑧 ∈ Inacc → 𝑧 ∈ Inaccw) | |
| 6 | winaon 10599 | . . . . . . . . 9 ⊢ (𝑧 ∈ Inaccw → 𝑧 ∈ On) | |
| 7 | 5, 6 | syl 17 | . . . . . . . 8 ⊢ (𝑧 ∈ Inacc → 𝑧 ∈ On) |
| 8 | 7 | ad2antrr 726 | . . . . . . 7 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → 𝑧 ∈ On) |
| 9 | vex 3444 | . . . . . . . 8 ⊢ 𝑥 ∈ V | |
| 10 | 9 | rankr1a 9748 | . . . . . . 7 ⊢ (𝑧 ∈ On → (𝑥 ∈ (𝑅1‘𝑧) ↔ (rank‘𝑥) ∈ 𝑧)) |
| 11 | 8, 10 | syl 17 | . . . . . 6 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → (𝑥 ∈ (𝑅1‘𝑧) ↔ (rank‘𝑥) ∈ 𝑧)) |
| 12 | 4, 11 | mpbird 257 | . . . . 5 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → 𝑥 ∈ (𝑅1‘𝑧)) |
| 13 | simpr 484 | . . . . 5 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → 𝑦 = (𝑅1‘𝑧)) | |
| 14 | 12, 13 | eleqtrrd 2839 | . . . 4 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → 𝑥 ∈ 𝑦) |
| 15 | simpl 482 | . . . . 5 ⊢ ((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) → 𝑧 ∈ Inacc) | |
| 16 | 15 | inagrud 44537 | . . . 4 ⊢ ((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) → (𝑅1‘𝑧) ∈ Univ) |
| 17 | 14, 16 | rspcime 3581 | . . 3 ⊢ ((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) → ∃𝑦 ∈ Univ 𝑥 ∈ 𝑦) |
| 18 | 17 | rexlimiva 3129 | . 2 ⊢ (∃𝑧 ∈ Inacc (rank‘𝑥) ∈ 𝑧 → ∃𝑦 ∈ Univ 𝑥 ∈ 𝑦) |
| 19 | 3, 18 | ax-mp 5 | 1 ⊢ ∃𝑦 ∈ Univ 𝑥 ∈ 𝑦 |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∃wrex 3060 Oncon0 6317 ‘cfv 6492 𝑅1cr1 9674 rankcrnk 9675 Inaccwcwina 10593 Inacccina 10594 Univcgru 10701 |
| 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-reg 9497 ax-inf2 9550 ax-ac2 10373 ax-groth 10734 |
| 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-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3350 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-int 4903 df-iun 4948 df-iin 4949 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-se 5578 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-isom 6501 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-smo 8278 df-recs 8303 df-rdg 8341 df-1o 8397 df-2o 8398 df-er 8635 df-map 8765 df-ixp 8836 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-oi 9415 df-har 9462 df-r1 9676 df-rank 9677 df-card 9851 df-aleph 9852 df-cf 9853 df-acn 9854 df-ac 10026 df-wina 10595 df-ina 10596 df-tsk 10660 df-gru 10702 |
| This theorem is referenced by: rr-groth 44540 rr-grothprim 44541 rr-grothshort 44545 |
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