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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 8308 | . . . . . 6 ⊢ 1o ∈ ω | |
2 | 1 | a1i 11 | . . . . 5 ⊢ (¬ 𝐴 ∈ Fin → 1o ∈ ω) |
3 | djudoml 9696 | . . . . 5 ⊢ ((𝐴 ∈ GCH ∧ 1o ∈ ω) → 𝐴 ≼ (𝐴 ⊔ 1o)) | |
4 | 2, 3 | sylan2 596 | . . . 4 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 𝐴 ≼ (𝐴 ⊔ 1o)) |
5 | simpr 488 | . . . . . 6 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → ¬ 𝐴 ∈ Fin) | |
6 | nnfi 8778 | . . . . . . . . 9 ⊢ (1o ∈ ω → 1o ∈ Fin) | |
7 | 1, 6 | mp1i 13 | . . . . . . . 8 ⊢ (¬ 𝐴 ∈ Fin → 1o ∈ Fin) |
8 | fidomtri2 9508 | . . . . . . . 8 ⊢ ((𝐴 ∈ GCH ∧ 1o ∈ Fin) → (𝐴 ≼ 1o ↔ ¬ 1o ≺ 𝐴)) | |
9 | 7, 8 | sylan2 596 | . . . . . . 7 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ≼ 1o ↔ ¬ 1o ≺ 𝐴)) |
10 | 1, 6 | mp1i 13 | . . . . . . . 8 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 1o ∈ Fin) |
11 | domfi 8829 | . . . . . . . . 9 ⊢ ((1o ∈ Fin ∧ 𝐴 ≼ 1o) → 𝐴 ∈ Fin) | |
12 | 11 | ex 416 | . . . . . . . 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 263 | . . . . . 6 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (¬ 1o ≺ 𝐴 → 𝐴 ∈ Fin)) |
15 | 5, 14 | mt3d 150 | . . . . 5 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 1o ≺ 𝐴) |
16 | canthp1 10166 | . . . . 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 515 | . . 3 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ≼ (𝐴 ⊔ 1o) ∧ (𝐴 ⊔ 1o) ≺ 𝒫 𝐴)) |
19 | gchen1 10137 | . . 3 ⊢ (((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) ∧ (𝐴 ≼ (𝐴 ⊔ 1o) ∧ (𝐴 ⊔ 1o) ≺ 𝒫 𝐴)) → 𝐴 ≈ (𝐴 ⊔ 1o)) | |
20 | 18, 19 | mpdan 687 | . 2 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → 𝐴 ≈ (𝐴 ⊔ 1o)) |
21 | 20 | ensymd 8618 | 1 ⊢ ((𝐴 ∈ GCH ∧ ¬ 𝐴 ∈ Fin) → (𝐴 ⊔ 1o) ≈ 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 399 ∈ wcel 2114 𝒫 cpw 4498 class class class wbr 5040 ωcom 7611 1oc1o 8136 ≈ cen 8564 ≼ cdom 8565 ≺ csdm 8566 Fincfn 8567 ⊔ cdju 9412 GCHcgch 10132 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2711 ax-rep 5164 ax-sep 5177 ax-nul 5184 ax-pow 5242 ax-pr 5306 ax-un 7491 ax-inf2 9189 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2541 df-eu 2571 df-clab 2718 df-cleq 2731 df-clel 2812 df-nfc 2882 df-ne 2936 df-ral 3059 df-rex 3060 df-reu 3061 df-rmo 3062 df-rab 3063 df-v 3402 df-sbc 3686 df-csb 3801 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4222 df-if 4425 df-pw 4500 df-sn 4527 df-pr 4529 df-tp 4531 df-op 4533 df-uni 4807 df-int 4847 df-iun 4893 df-br 5041 df-opab 5103 df-mpt 5121 df-tr 5147 df-id 5439 df-eprel 5444 df-po 5452 df-so 5453 df-fr 5493 df-se 5494 df-we 5495 df-xp 5541 df-rel 5542 df-cnv 5543 df-co 5544 df-dm 5545 df-rn 5546 df-res 5547 df-ima 5548 df-pred 6139 df-ord 6185 df-on 6186 df-lim 6187 df-suc 6188 df-iota 6307 df-fun 6351 df-fn 6352 df-f 6353 df-f1 6354 df-fo 6355 df-f1o 6356 df-fv 6357 df-isom 6358 df-riota 7139 df-ov 7185 df-oprab 7186 df-mpo 7187 df-om 7612 df-1st 7726 df-2nd 7727 df-wrecs 7988 df-recs 8049 df-rdg 8087 df-1o 8143 df-2o 8144 df-er 8332 df-map 8451 df-en 8568 df-dom 8569 df-sdom 8570 df-fin 8571 df-oi 9059 df-dju 9415 df-card 9453 df-gch 10133 |
This theorem is referenced by: gchinf 10169 gchdjuidm 10180 gchpwdom 10182 |
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