| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 4198 | . 2 ⊢ ∅ ∈ 𝒫 1o | |
| 2 | 1 | ne0ii 3461 | 1 ⊢ 𝒫 1o ≠ ∅ |
| Colors of variables: wff set class |
| Syntax hints: ≠ wne 2367 ∅c0 3451 𝒫 cpw 3606 1oc1o 6476 |
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 ax-nul 4160 |
| This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-v 2765 df-dif 3159 df-in 3163 df-ss 3170 df-nul 3452 df-pw 3608 |
| This theorem is referenced by: pw1nel3 7314 sucpw1nel3 7316 |
| Copyright terms: Public domain | W3C validator |