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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 14688 | . 2 ⊢ (𝑆 ∈ 𝑉 → Word 𝑆 = ∪ 𝑙 ∈ ℕ0 (𝑆 ↑m (0..^𝑙))) | |
| 2 | nn0ex 12639 | . . 3 ⊢ ℕ0 ∈ V | |
| 3 | ovexd 7478 | . . . 4 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝑙 ∈ ℕ0) → (𝑆 ↑m (0..^𝑙)) ∈ V) | |
| 4 | 3 | ralrimiva 3158 | . . 3 ⊢ (𝑆 ∈ 𝑉 → ∀𝑙 ∈ ℕ0 (𝑆 ↑m (0..^𝑙)) ∈ V) |
| 5 | iunexg 7999 | . . 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 2864 | 1 ⊢ (𝑆 ∈ 𝑉 → Word 𝑆 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2147 ∀wral 3080 Vcvv 3454 ∪ ciun 4954 (class class class)co 7443 ↑m cmap 8875 0cc0 11227 ℕ0cn0 12633 ..^cfzo 13815 Word cword 14685 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-cnex 11283 ax-1cn 11285 ax-addcl 11287 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6322 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-iota 6512 df-fun 6560 df-fn 6561 df-f 6562 df-f1 6563 df-fo 6564 df-f1o 6565 df-fv 6566 df-ov 7446 df-oprab 7447 df-mpo 7448 df-om 7902 df-2nd 8026 df-frecs 8327 df-wrecs 8358 df-recs 8407 df-rdg 8446 df-map 8877 df-nn 12363 df-n0 12634 df-word 14686 |
| This theorem is used by: wrdexb 14697 wrdexi 14698 wrdnfi 14720 elovmpowrd 14730 elovmptnn0wrd 14731 wrd2f1tovbij 15142 chnexg 18821 frmdbas 19077 frmdplusg 19079 efgval 19961 frgp0 20004 frgpmhm 20009 vrgpf 20012 vrgpinv 20013 frgpupf 20017 frgpup1 20019 frgpup2 20020 frgpup3lem 20021 frgpnabllem1 20117 frgpnabllem2 20118 wksfval 30220 wwlks 30454 clwwlk 30604 gsumwrd2dccat 33709 tocycval 33739 elrgspnlem1 33873 elrgspnlem2 33874 elrgspnlem3 33875 elrgspnlem4 33876 elrgspn 33877 elrgspnsubrunlem1 33878 elrgspnsubrunlem2 33879 sseqval 35090 upwlksfval 49438 |
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