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| Mirrors > Home > MPE Home > Th. List > prcnel | Structured version Visualization version GIF version | ||
| Description: A proper class doesn't belong to any class. (Contributed by Glauco Siliprandi, 17-Aug-2020.) (Proof shortened by AV, 14-Nov-2020.) |
| Ref | Expression |
|---|---|
| prcnel | ⊢ (¬ 𝐴 ∈ V → ¬ 𝐴 ∈ 𝑉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elex 3463 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ V) | |
| 2 | 1 | con3i 154 | 1 ⊢ (¬ 𝐴 ∈ V → ¬ 𝐴 ∈ 𝑉) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∈ wcel 2114 Vcvv 3442 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-v 3444 |
| This theorem is referenced by: suppco 8160 fundmge2nop0 14439 fun2dmnop0 14441 vtxval 29091 iedgval 29092 xoromon 35272 fmlafvel 35607 isinf2 37687 eliin2f 45492 dfatprc 47519 afvprc 47533 afv2prc 47615 |
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