Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > infcdaabs | 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 |
---|---|
infcdaabs | ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 +𝑐 𝐵) ≈ 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cdadom2 8892 | . . . . . 6 ⊢ (𝐵 ≼ 𝐴 → (𝐴 +𝑐 𝐵) ≼ (𝐴 +𝑐 𝐴)) | |
2 | 1 | 3ad2ant3 1077 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 +𝑐 𝐵) ≼ (𝐴 +𝑐 𝐴)) |
3 | simp1 1054 | . . . . . 6 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 𝐴 ∈ dom card) | |
4 | xp2cda 8885 | . . . . . 6 ⊢ (𝐴 ∈ dom card → (𝐴 × 2𝑜) = (𝐴 +𝑐 𝐴)) | |
5 | 3, 4 | syl 17 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 × 2𝑜) = (𝐴 +𝑐 𝐴)) |
6 | 2, 5 | breqtrrd 4611 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 +𝑐 𝐵) ≼ (𝐴 × 2𝑜)) |
7 | 2onn 7607 | . . . . . . 7 ⊢ 2𝑜 ∈ ω | |
8 | nnsdom 8434 | . . . . . . 7 ⊢ (2𝑜 ∈ ω → 2𝑜 ≺ ω) | |
9 | sdomdom 7869 | . . . . . . 7 ⊢ (2𝑜 ≺ ω → 2𝑜 ≼ ω) | |
10 | 7, 8, 9 | mp2b 10 | . . . . . 6 ⊢ 2𝑜 ≼ ω |
11 | simp2 1055 | . . . . . 6 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → ω ≼ 𝐴) | |
12 | domtr 7895 | . . . . . 6 ⊢ ((2𝑜 ≼ ω ∧ ω ≼ 𝐴) → 2𝑜 ≼ 𝐴) | |
13 | 10, 11, 12 | sylancr 694 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 2𝑜 ≼ 𝐴) |
14 | xpdom2g 7941 | . . . . 5 ⊢ ((𝐴 ∈ dom card ∧ 2𝑜 ≼ 𝐴) → (𝐴 × 2𝑜) ≼ (𝐴 × 𝐴)) | |
15 | 3, 13, 14 | syl2anc 691 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 × 2𝑜) ≼ (𝐴 × 𝐴)) |
16 | domtr 7895 | . . . 4 ⊢ (((𝐴 +𝑐 𝐵) ≼ (𝐴 × 2𝑜) ∧ (𝐴 × 2𝑜) ≼ (𝐴 × 𝐴)) → (𝐴 +𝑐 𝐵) ≼ (𝐴 × 𝐴)) | |
17 | 6, 15, 16 | syl2anc 691 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 +𝑐 𝐵) ≼ (𝐴 × 𝐴)) |
18 | infxpidm2 8723 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴) → (𝐴 × 𝐴) ≈ 𝐴) | |
19 | 18 | 3adant3 1074 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 × 𝐴) ≈ 𝐴) |
20 | domentr 7901 | . . 3 ⊢ (((𝐴 +𝑐 𝐵) ≼ (𝐴 × 𝐴) ∧ (𝐴 × 𝐴) ≈ 𝐴) → (𝐴 +𝑐 𝐵) ≼ 𝐴) | |
21 | 17, 19, 20 | syl2anc 691 | . 2 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 +𝑐 𝐵) ≼ 𝐴) |
22 | reldom 7847 | . . . . 5 ⊢ Rel ≼ | |
23 | 22 | brrelexi 5082 | . . . 4 ⊢ (𝐵 ≼ 𝐴 → 𝐵 ∈ V) |
24 | 23 | 3ad2ant3 1077 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 𝐵 ∈ V) |
25 | cdadom3 8893 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ V) → 𝐴 ≼ (𝐴 +𝑐 𝐵)) | |
26 | 3, 24, 25 | syl2anc 691 | . 2 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → 𝐴 ≼ (𝐴 +𝑐 𝐵)) |
27 | sbth 7965 | . 2 ⊢ (((𝐴 +𝑐 𝐵) ≼ 𝐴 ∧ 𝐴 ≼ (𝐴 +𝑐 𝐵)) → (𝐴 +𝑐 𝐵) ≈ 𝐴) | |
28 | 21, 26, 27 | syl2anc 691 | 1 ⊢ ((𝐴 ∈ dom card ∧ ω ≼ 𝐴 ∧ 𝐵 ≼ 𝐴) → (𝐴 +𝑐 𝐵) ≈ 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1031 = wceq 1475 ∈ wcel 1977 Vcvv 3173 class class class wbr 4583 × cxp 5036 dom cdm 5038 (class class class)co 6549 ωcom 6957 2𝑜c2o 7441 ≈ cen 7838 ≼ cdom 7839 ≺ csdm 7840 cardccrd 8644 +𝑐 ccda 8872 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-inf2 8421 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-se 4998 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-isom 5813 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-2o 7448 df-oadd 7451 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-oi 8298 df-card 8648 df-cda 8873 |
This theorem is referenced by: infunabs 8912 infcda 8913 infdif 8914 |
Copyright terms: Public domain | W3C validator |