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| Mirrors > Home > MPE Home > Th. List > wrdexg | Structured version Visualization version GIF version | ||
| Description: The set of words over a set is a set. (Contributed by Mario Carneiro, 26-Feb-2016.) (Proof shortened by JJ, 18-Nov-2022.) |
| Ref | Expression |
|---|---|
| wrdexg | ⊢ (𝑆 ∈ 𝑉 → Word 𝑆 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wrdval 14573 | . 2 ⊢ (𝑆 ∈ 𝑉 → Word 𝑆 = ∪ 𝑙 ∈ ℕ0 (𝑆 ↑m (0..^𝑙))) | |
| 2 | nn0ex 12528 | . . 3 ⊢ ℕ0 ∈ V | |
| 3 | ovexd 7458 | . . . 4 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝑙 ∈ ℕ0) → (𝑆 ↑m (0..^𝑙)) ∈ V) | |
| 4 | 3 | ralrimiva 3160 | . . 3 ⊢ (𝑆 ∈ 𝑉 → ∀𝑙 ∈ ℕ0 (𝑆 ↑m (0..^𝑙)) ∈ V) |
| 5 | iunexg 7969 | . . 3 ⊢ ((ℕ0 ∈ V ∧ ∀𝑙 ∈ ℕ0 (𝑆 ↑m (0..^𝑙)) ∈ V) → ∪ 𝑙 ∈ ℕ0 (𝑆 ↑m (0..^𝑙)) ∈ V) | |
| 6 | 2, 4, 5 | sylancr 599 | . 2 ⊢ (𝑆 ∈ 𝑉 → ∪ 𝑙 ∈ ℕ0 (𝑆 ↑m (0..^𝑙)) ∈ V) |
| 7 | 1, 6 | eqeltrd 2866 | 1 ⊢ (𝑆 ∈ 𝑉 → Word 𝑆 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2146 ∀wral 3082 Vcvv 3458 ∪ ciun 4961 (class class class)co 7423 ↑m cmap 8833 0cc0 11118 ℕ0cn0 12522 ..^cfzo 13701 Word cword 14570 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-1cn 11176 ax-addcl 11178 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-ral 3083 df-rex 3093 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-map 8835 df-nn 12252 df-n0 12523 df-word 14571 |
| This theorem is used by: wrdexb 14582 wrdexi 14583 wrdnfi 14605 elovmpowrd 14615 elovmptnn0wrd 14616 wrd2f1tovbij 15023 chnexg 18699 frmdbas 18942 frmdplusg 18944 efgval 19818 frgp0 19861 frgpmhm 19866 vrgpf 19869 vrgpinv 19870 frgpupf 19874 frgpup1 19876 frgpup2 19877 frgpup3lem 19878 frgpnabllem1 19974 frgpnabllem2 19975 wksfval 29996 wwlks 30221 clwwlk 30371 gsumwrd2dccat 33429 tocycval 33459 elrgspnlem1 33593 elrgspnlem2 33594 elrgspnlem3 33595 elrgspnlem4 33596 elrgspn 33597 elrgspnsubrunlem1 33598 elrgspnsubrunlem2 33599 elrgspnsubrun 33600 sseqval 34810 upwlksfval 48941 |
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