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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 9719 | . . 3 ⊢ (rank‘𝑥) ∈ On | |
| 2 | inaex 44724 | . . 3 ⊢ ((rank‘𝑥) ∈ On → ∃𝑧 ∈ Inacc (rank‘𝑥) ∈ 𝑧) | |
| 3 | 1, 2 | ax-mp 5 | . 2 ⊢ ∃𝑧 ∈ Inacc (rank‘𝑥) ∈ 𝑧 |
| 4 | simplr 769 | . . . . . 6 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → (rank‘𝑥) ∈ 𝑧) | |
| 5 | inawina 10613 | . . . . . . . . 9 ⊢ (𝑧 ∈ Inacc → 𝑧 ∈ Inaccw) | |
| 6 | winaon 10611 | . . . . . . . . 9 ⊢ (𝑧 ∈ Inaccw → 𝑧 ∈ On) | |
| 7 | 5, 6 | syl 17 | . . . . . . . 8 ⊢ (𝑧 ∈ Inacc → 𝑧 ∈ On) |
| 8 | 7 | ad2antrr 727 | . . . . . . 7 ⊢ (((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) ∧ 𝑦 = (𝑅1‘𝑧)) → 𝑧 ∈ On) |
| 9 | vex 3433 | . . . . . . . 8 ⊢ 𝑥 ∈ V | |
| 10 | 9 | rankr1a 9760 | . . . . . . 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 44723 | . . . 4 ⊢ ((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) → (𝑅1‘𝑧) ∈ Univ) |
| 17 | 14, 16 | rspcime 3569 | . . 3 ⊢ ((𝑧 ∈ Inacc ∧ (rank‘𝑥) ∈ 𝑧) → ∃𝑦 ∈ Univ 𝑥 ∈ 𝑦) |
| 18 | 17 | rexlimiva 3130 | . 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 1542 ∈ wcel 2114 ∃wrex 3061 Oncon0 6323 ‘cfv 6498 𝑅1cr1 9686 rankcrnk 9687 Inaccwcwina 10605 Inacccina 10606 Univcgru 10713 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-reg 9507 ax-inf2 9562 ax-ac2 10385 ax-groth 10746 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 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 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-int 4890 df-iun 4935 df-iin 4936 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-isom 6507 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-smo 8286 df-recs 8311 df-rdg 8349 df-1o 8405 df-2o 8406 df-er 8643 df-map 8775 df-ixp 8846 df-en 8894 df-dom 8895 df-sdom 8896 df-fin 8897 df-oi 9425 df-har 9472 df-r1 9688 df-rank 9689 df-card 9863 df-aleph 9864 df-cf 9865 df-acn 9866 df-ac 10038 df-wina 10607 df-ina 10608 df-tsk 10672 df-gru 10714 |
| This theorem is referenced by: rr-groth 44726 rr-grothprim 44727 rr-grothshort 44731 |
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