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Mirrors > Home > ILE Home > Th. List > basmex | GIF version |
Description: A structure whose base is inhabited is a set. (Contributed by Jim Kingdon, 18-Nov-2024.) |
Ref | Expression |
---|---|
basmex.b | ⊢ 𝐵 = (Base‘𝐺) |
Ref | Expression |
---|---|
basmex | ⊢ (𝐴 ∈ 𝐵 → 𝐺 ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | basfn 12451 | . . . 4 ⊢ Base Fn V | |
2 | fnrel 5286 | . . . 4 ⊢ (Base Fn V → Rel Base) | |
3 | 1, 2 | ax-mp 5 | . . 3 ⊢ Rel Base |
4 | basmex.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐺) | |
5 | 4 | eleq2i 2233 | . . . 4 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ (Base‘𝐺)) |
6 | 5 | biimpi 119 | . . 3 ⊢ (𝐴 ∈ 𝐵 → 𝐴 ∈ (Base‘𝐺)) |
7 | relelfvdm 5518 | . . 3 ⊢ ((Rel Base ∧ 𝐴 ∈ (Base‘𝐺)) → 𝐺 ∈ dom Base) | |
8 | 3, 6, 7 | sylancr 411 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝐺 ∈ dom Base) |
9 | 8 | elexd 2739 | 1 ⊢ (𝐴 ∈ 𝐵 → 𝐺 ∈ V) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1343 ∈ wcel 2136 Vcvv 2726 dom cdm 4604 Rel wrel 4609 Fn wfn 5183 ‘cfv 5188 Basecbs 12394 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-cnex 7844 ax-resscn 7845 ax-1re 7847 ax-addrcl 7850 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ral 2449 df-rex 2450 df-v 2728 df-sbc 2952 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-br 3983 df-opab 4044 df-mpt 4045 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-iota 5153 df-fun 5190 df-fn 5191 df-fv 5196 df-inn 8858 df-ndx 12397 df-slot 12398 df-base 12400 |
This theorem is referenced by: ismgmid 12608 |
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