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Mirrors > Home > ILE Home > Th. List > elexd | GIF version |
Description: If a class is a member of another class, it is a set. (Contributed by Glauco Siliprandi, 11-Oct-2020.) |
Ref | Expression |
---|---|
elexd.1 | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
Ref | Expression |
---|---|
elexd | ⊢ (𝜑 → 𝐴 ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elexd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
2 | elex 2700 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ V) | |
3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → 𝐴 ∈ V) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 1481 Vcvv 2689 |
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-5 1424 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-v 2691 |
This theorem is referenced by: dmmptd 5261 tfr1onlemsucfn 6245 tfrcllemsucfn 6258 frecrdg 6313 unsnfidcel 6817 fnfi 6833 caseinl 6984 caseinr 6985 omniwomnimkv 7049 acfun 7080 seq3val 10262 seqvalcd 10263 hashennn 10558 lcmval 11780 hashdvds 11933 ennnfonelemp1 11955 isstruct2r 12009 strnfvnd 12018 strfvssn 12020 strslfv2d 12040 setsslid 12048 ressid2 12057 ressval2 12058 istopon 12219 istps 12238 tgclb 12273 restbasg 12376 restco 12382 lmfval 12400 cnfval 12402 cnpfval 12403 cnpval 12406 txcnp 12479 txrest 12484 ismet2 12562 xmetpsmet 12577 mopnval 12650 comet 12707 reldvg 12856 dvmptclx 12888 |
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