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Mirrors > Home > ILE Home > Th. List > elisset | GIF version |
Description: An element of a class exists. (Contributed by NM, 1-May-1995.) |
Ref | Expression |
---|---|
elisset | ⊢ (𝐴 ∈ 𝑉 → ∃𝑥 𝑥 = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elex 2692 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ V) | |
2 | isset 2687 | . 2 ⊢ (𝐴 ∈ V ↔ ∃𝑥 𝑥 = 𝐴) | |
3 | 1, 2 | sylib 121 | 1 ⊢ (𝐴 ∈ 𝑉 → ∃𝑥 𝑥 = 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1331 ∃wex 1468 ∈ wcel 1480 Vcvv 2681 |
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 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-v 2683 |
This theorem is referenced by: elex22 2696 elex2 2697 ceqsalt 2707 ceqsalg 2709 cgsexg 2716 cgsex2g 2717 cgsex4g 2718 vtoclgft 2731 vtocleg 2752 vtoclegft 2753 spc2egv 2770 spc2gv 2771 spc3egv 2772 spc3gv 2773 eqvincg 2804 tpid3g 3633 iinexgm 4074 copsex2t 4162 copsex2g 4163 ralxfr2d 4380 rexxfr2d 4381 fliftf 5693 eloprabga 5851 ovmpt4g 5886 spc2ed 6123 eroveu 6513 supelti 6882 genpassl 7325 genpassu 7326 eqord1 8238 nn1suc 8732 bj-inex 13094 |
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