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Mirrors > Home > MPE Home > Th. List > infdjuabs | Structured version Visualization version GIF version |
Description: Absorption law for addition to an infinite cardinal. (Contributed by NM, 30-Sep-2004.) (Revised by Mario Carneiro, 29-Apr-2015.) |
Ref | Expression |
---|---|
infdjuabs | ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 ⊔ 𝐵) ≈ 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp3 1140 | . . . . . 6 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 𝐵 ≼ 𝐴) | |
2 | reldom 8632 | . . . . . . 7 ⊢ Rel ≼ | |
3 | 2 | brrelex2i 5606 | . . . . . 6 ⊢ (𝐵 ≼ 𝐴 → 𝐴 ∈ V) |
4 | djudom2 9797 | . . . . . 6 ⊢ ((𝐵 ≼ 𝐴 ∧ 𝐴 ∈ V) → (𝐴 ⊔ 𝐵) ≼ (𝐴 ⊔ 𝐴)) | |
5 | 1, 3, 4 | syl2anc2 588 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 ⊔ 𝐵) ≼ (𝐴 ⊔ 𝐴)) |
6 | xp2dju 9790 | . . . . 5 ⊢ (2o × 𝐴) = (𝐴 ⊔ 𝐴) | |
7 | 5, 6 | breqtrrdi 5095 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 ⊔ 𝐵) ≼ (2o × 𝐴)) |
8 | simp1 1138 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 𝐴 ∈ dom card) | |
9 | 2onn 8368 | . . . . . . 7 ⊢ 2o ∈ ω | |
10 | nnsdom 9269 | . . . . . . 7 ⊢ (2o ∈ ω → 2o ≺ ω) | |
11 | sdomdom 8656 | . . . . . . 7 ⊢ (2o ≺ ω → 2o ≼ ω) | |
12 | 9, 10, 11 | mp2b 10 | . . . . . 6 ⊢ 2o ≼ ω |
13 | simp2 1139 | . . . . . 6 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → ω ≼ 𝐴) | |
14 | domtr 8681 | . . . . . 6 ⊢ ((2o ≼ ω ∧ ω ≼ 𝐴) → 2o ≼ 𝐴) | |
15 | 12, 13, 14 | sylancr 590 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 2o ≼ 𝐴) |
16 | xpdom1g 8742 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ 2o ≼ 𝐴) → (2o × 𝐴) ≼ (𝐴 × 𝐴)) | |
17 | 8, 15, 16 | syl2anc 587 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (2o × 𝐴) ≼ (𝐴 × 𝐴)) |
18 | domtr 8681 | . . . 4 ⊢ (((𝐴 ⊔ 𝐵) ≼ (2o × 𝐴) ∧ (2o × 𝐴) ≼ (𝐴 × 𝐴)) → (𝐴 ⊔ 𝐵) ≼ (𝐴 × 𝐴)) | |
19 | 7, 17, 18 | syl2anc 587 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 ⊔ 𝐵) ≼ (𝐴 × 𝐴)) |
20 | infxpidm2 9631 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴) → (𝐴 × 𝐴) ≈ 𝐴) | |
21 | 20 | 3adant3 1134 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 × 𝐴) ≈ 𝐴) |
22 | domentr 8687 | . . 3 ⊢ (((𝐴 ⊔ 𝐵) ≼ (𝐴 × 𝐴) ∧ (𝐴 × 𝐴) ≈ 𝐴) → (𝐴 ⊔ 𝐵) ≼ 𝐴) | |
23 | 19, 21, 22 | syl2anc 587 | . 2 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 ⊔ 𝐵) ≼ 𝐴) |
24 | 2 | brrelex1i 5605 | . . . 4 ⊢ (𝐵 ≼ 𝐴 → 𝐵 ∈ V) |
25 | 24 | 3ad2ant3 1137 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 𝐵 ∈ V) |
26 | djudoml 9798 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ V) → 𝐴 ≼ (𝐴 ⊔ 𝐵)) | |
27 | 8, 25, 26 | syl2anc 587 | . 2 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 𝐴 ≼ (𝐴 ⊔ 𝐵)) |
28 | sbth 8766 | . 2 ⊢ (((𝐴 ⊔ 𝐵) ≼ 𝐴 ∧ 𝐴 ≼ (𝐴 ⊔ 𝐵)) → (𝐴 ⊔ 𝐵) ≈ 𝐴) | |
29 | 23, 27, 28 | syl2anc 587 | 1 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 ⊔ 𝐵) ≈ 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1089 ∈ wcel 2110 Vcvv 3408 class class class wbr 5053 × cxp 5549 dom cdm 5551 ωcom 7644 2oc2o 8196 ≈ cen 8623 ≼ cdom 8624 ≺ csdm 8625 ⊔ cdju 9514 cardccrd 9551 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-rep 5179 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-inf2 9256 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-int 4860 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-se 5510 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-isom 6389 df-riota 7170 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-1o 8202 df-2o 8203 df-er 8391 df-en 8627 df-dom 8628 df-sdom 8629 df-fin 8630 df-oi 9126 df-dju 9517 df-card 9555 |
This theorem is referenced by: infunabs 9821 infdju 9822 infdif 9823 |
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