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| Mirrors > Home > ILE Home > Th. List > 1ex | GIF version | ||
| Description: 1 is a set. Common special case. (Contributed by David A. Wheeler, 7-Jul-2016.) |
| Ref | Expression |
|---|---|
| 1ex | ⊢ 1 ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 8272 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | 1 | elexi 2834 | 1 ⊢ 1 ∈ V |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 Vcvv 2821 ℂcc 8177 1c1 8180 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-ext 2220 ax-1cn 8272 |
| This proof depends on definitions: df-bi 117 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-v 2823 |
| This theorem is used by: nn1suc 9323 nn0ind-raph 9763 fzprval 10489 fztpval 10490 m1expcl2 10998 1exp 11005 facnn 11165 fac0 11166 prhash2ex 11250 prodf1f 12310 fprodntrivap 12351 prod1dc 12353 fprodssdc 12357 ege2le3 12438 1nprm 12892 pcmpt 13122 ballotfilem2 13228 dvexp 15812 dvef 15828 lgsdir2lem3 16149 2wlklem 16617 konigsberglem4 16732 konigsberglem5 16733 2o01f 17024 iswomni0 17101 |
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