Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > gchdju1 | Structured version Visualization version GIF version |
Description: An infinite GCH-set is idempotent under cardinal successor. (Contributed by Mario Carneiro, 18-May-2015.) |
Ref | Expression |
---|---|
gchdju1 | ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ⊔ 1o) ≈ 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1onn 8432 | . . . . . 6 ⊢ 1o ∈ ω | |
2 | 1 | a1i 11 | . . . . 5 ⊢ (¬ 𝐴 ∈ Fin → 1o ∈ ω) |
3 | djudoml 9871 | . . . . 5 ⊢ ((𝐴 ∈ GCH ∧ 1o ∈ ω) → 𝐴 ≼ (𝐴 ⊔ 1o)) | |
4 | 2, 3 | sylan2 592 | . . . 4 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 𝐴 ≼ (𝐴 ⊔ 1o)) |
5 | simpr 484 | . . . . . 6 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → ¬ 𝐴 ∈ Fin) | |
6 | nnfi 8912 | . . . . . . . . 9 ⊢ (1o ∈ ω → 1o ∈ Fin) | |
7 | 1, 6 | mp1i 13 | . . . . . . . 8 ⊢ (¬ 𝐴 ∈ Fin → 1o ∈ Fin) |
8 | fidomtri2 9683 | . . . . . . . 8 ⊢ ((𝐴 ∈ GCH ∧ 1o ∈ Fin) → (𝐴 ≼ 1o ↔ ¬ 1o ≺ 𝐴)) | |
9 | 7, 8 | sylan2 592 | . . . . . . 7 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ≼ 1o ↔ ¬ 1o ≺ 𝐴)) |
10 | 1, 6 | mp1i 13 | . . . . . . . 8 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 1o ∈ Fin) |
11 | domfi 8935 | . . . . . . . . 9 ⊢ ((1o ∈ Fin ∧ 𝐴 ≼ 1o) → 𝐴 ∈ Fin) | |
12 | 11 | ex 412 | . . . . . . . 8 ⊢ (1o ∈ Fin → (𝐴 ≼ 1o → 𝐴 ∈ Fin)) |
13 | 10, 12 | syl 17 | . . . . . . 7 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ≼ 1o → 𝐴 ∈ Fin)) |
14 | 9, 13 | sylbird 259 | . . . . . 6 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (¬ 1o ≺ 𝐴 → 𝐴 ∈ Fin)) |
15 | 5, 14 | mt3d 148 | . . . . 5 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 1o ≺ 𝐴) |
16 | canthp1 10341 | . . . . 5 ⊢ (1o ≺ 𝐴 → (𝐴 ⊔ 1o) ≺ 𝒫 𝐴) | |
17 | 15, 16 | syl 17 | . . . 4 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ⊔ 1o) ≺ 𝒫 𝐴) |
18 | 4, 17 | jca 511 | . . 3 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ≼ (𝐴 ⊔ 1o) ∧ (𝐴 ⊔ 1o) ≺ 𝒫 𝐴)) |
19 | gchen1 10312 | . . 3 ⊢ (((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) ∧ (𝐴 ≼ (𝐴 ⊔ 1o) ∧ (𝐴 ⊔ 1o) ≺ 𝒫 𝐴)) → 𝐴 ≈ (𝐴 ⊔ 1o)) | |
20 | 18, 19 | mpdan 683 | . 2 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 𝐴 ≈ (𝐴 ⊔ 1o)) |
21 | 20 | ensymd 8746 | 1 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ⊔ 1o) ≈ 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∈ wcel 2108 𝒫 cpw 4530 class class class wbr 5070 ωcom 7687 1oc1o 8260 ≈ cen 8688 ≼ cdom 8689 ≺ csdm 8690 Fincfn 8691 ⊔ cdju 9587 GCHcgch 10307 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-2o 8268 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-oi 9199 df-dju 9590 df-card 9628 df-gch 10308 |
This theorem is referenced by: gchinf 10344 gchdjuidm 10355 gchpwdom 10357 |
Copyright terms: Public domain | W3C validator |