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| Mirrors > Home > MPE Home > Th. List > p0exALT | Structured version Visualization version GIF version | ||
| Description: Alternate proof of p0ex 5353 which is quite different and longer if snexALT 5352 is expanded. (Contributed by NM, 23-Dec-1993.) (Proof modification is discouraged.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| p0exALT | ⊢ {∅} ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snexALT 5352 | 1 ⊢ {∅} ∈ V |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2145 Vcvv 3453 ∅c0 4282 {csn 4587 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 |
| This proof depends on definitions: df-bi 210 df-an 402 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3415 df-v 3455 df-dif 3905 df-in 3909 df-ss 3919 df-nul 4283 df-pw 4562 df-sn 4588 |
| This theorem is used by: (None) |
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