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| Mirrors > Home > ILE Home > Th. List > sucpw1ne3 | GIF version | ||
| Description: Negated excluded middle implies that the successor of the power set of 1o is not three . (Contributed by James E. Hanson and Jim Kingdon, 30-Jul-2024.) |
| Ref | Expression |
|---|---|
| sucpw1ne3 | ⊢ (¬ EXMID → suc 𝒫 1o ≠ 3o) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pw1nel3 7590 | . 2 ⊢ (¬ EXMID → ¬ 𝒫 1o ∈ 3o) | |
| 2 | 1oex 6695 | . . . . . 6 ⊢ 1o ∈ V | |
| 3 | 2 | pwex 4320 | . . . . 5 ⊢ 𝒫 1o ∈ V |
| 4 | 3 | sucid 4562 | . . . 4 ⊢ 𝒫 1o ∈ suc 𝒫 1o |
| 5 | eleq2 2302 | . . . 4 ⊢ (suc 𝒫 1o = 3o → (𝒫 1o ∈ suc 𝒫 1o ↔ 𝒫 1o ∈ 3o)) | |
| 6 | 4, 5 | mpbii 148 | . . 3 ⊢ (suc 𝒫 1o = 3o → 𝒫 1o ∈ 3o) |
| 7 | 6 | necon3bi 2470 | . 2 ⊢ (¬ 𝒫 1o ∈ 3o → suc 𝒫 1o ≠ 3o) |
| 8 | 1, 7 | syl 14 | 1 ⊢ (¬ EXMID → suc 𝒫 1o ≠ 3o) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 = wceq 1402 ∈ wcel 2209 ≠ wne 2420 𝒫 cpw 3688 EXMIDwem 4331 suc csuc 4510 1oc1o 6680 3oc3o 6682 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-nul 4259 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-uni 3936 df-tr 4230 df-exmid 4332 df-iord 4511 df-on 4513 df-suc 4516 df-1o 6687 df-2o 6688 df-3o 6689 |
| This theorem is used by: (None) |
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