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| Mirrors > Home > ILE Home > Th. List > pw1ne0 | GIF version | ||
| Description: The power set of 1o is not zero. (Contributed by Jim Kingdon, 30-Jul-2024.) |
| Ref | Expression |
|---|---|
| pw1ne0 | ⊢ 𝒫 1o ≠ ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0elpw 4212 | . 2 ⊢ ∅ ∈ 𝒫 1o | |
| 2 | 1 | ne0ii 3471 | 1 ⊢ 𝒫 1o ≠ ∅ |
| Colors of variables: wff set class |
| Syntax hints: ≠ wne 2377 ∅c0 3461 𝒫 cpw 3617 1oc1o 6502 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2188 ax-nul 4174 |
| This theorem depends on definitions: df-bi 117 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-v 2775 df-dif 3169 df-in 3173 df-ss 3180 df-nul 3462 df-pw 3619 |
| This theorem is referenced by: pw1nel3 7350 sucpw1nel3 7352 |
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