Theorem sucpw1ne3 7343

Description: Negated excluded middle implies that the successor of the power set of 1_o is not three . (Contributed by James E. Hanson and Jim Kingdon, 30-Jul-2024.)

Assertion

Ref	Expression
sucpw1ne3	⊢ (¬ EXMID → suc 𝒫 1o ≠ 3o)

Proof of Theorem sucpw1ne3

Step	Hyp	Ref	Expression
1		pw1nel3 7342	. 2 ⊢ (¬ EXMID → ¬ 𝒫 1o ∈ 3o)
2		1oex 6509	. . . . . 6 ⊢ 1o ∈ V
3	2	pwex 4226	. . . . 5 ⊢ 𝒫 1o ∈ V
4	3	sucid 4463	. . . 4 ⊢ 𝒫 1o ∈ suc 𝒫 1o
5		eleq2 2268	. . . 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 2425	. 2 ⊢ (¬ 𝒫 1o ∈ 3o → suc 𝒫 1o ≠ 3o)
8	1, 7	syl 14	1 ⊢ (¬ EXMID → suc 𝒫 1o ≠ 3o)

Syntax hints:  ¬ wn 3   → wi 4   = wceq 1372   ∈ wcel 2175   ≠ wne 2375  𝒫 cpw 3615  EXMIDwem 4237  suc csuc 4411  1_oc1o 6494  3_oc3o 6496

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 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-13 2177  ax-14 2178  ax-ext 2186  ax-sep 4161  ax-nul 4169  ax-pow 4217  ax-pr 4252  ax-un 4479  ax-setind 4584

This theorem depends on definitions:  df-bi 117  df-dc 836  df-3an 982  df-tru 1375  df-nf 1483  df-sb 1785  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ne 2376  df-ral 2488  df-rex 2489  df-v 2773  df-dif 3167  df-un 3169  df-in 3171  df-ss 3178  df-nul 3460  df-pw 3617  df-sn 3638  df-pr 3639  df-uni 3850  df-tr 4142  df-exmid 4238  df-iord 4412  df-on 4414  df-suc 4417  df-1o 6501  df-2o 6502  df-3o 6503

This theorem is referenced by: (None)