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Mirrors > Home > MPE Home > Th. List > domtri2 | Structured version Visualization version GIF version |
Description: Trichotomy of dominance for numerable sets (does not use AC). (Contributed by Mario Carneiro, 29-Apr-2015.) |
Ref | Expression |
---|---|
domtri2 | ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → (𝐴 ≼ 𝐵 ↔ ¬ 𝐵 ≺ 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | carddom2 9733 | . 2 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → ((card‘𝐴) ⊆ (card‘𝐵) ↔ 𝐴 ≼ 𝐵)) | |
2 | cardon 9700 | . . . 4 ⊢ (card‘𝐴) ∈ On | |
3 | cardon 9700 | . . . 4 ⊢ (card‘𝐵) ∈ On | |
4 | ontri1 6302 | . . . 4 ⊢ (((card‘𝐴) ∈ On ∧ (card‘𝐵) ∈ On) → ((card‘𝐴) ⊆ (card‘𝐵) ↔ ¬ (card‘𝐵) ∈ (card‘𝐴))) | |
5 | 2, 3, 4 | mp2an 689 | . . 3 ⊢ ((card‘𝐴) ⊆ (card‘𝐵) ↔ ¬ (card‘𝐵) ∈ (card‘𝐴)) |
6 | cardsdom2 9744 | . . . . 5 ⊢ ((𝐵 ∈ dom card ∧ 𝐴 ∈ dom card) → ((card‘𝐵) ∈ (card‘𝐴) ↔ 𝐵 ≺ 𝐴)) | |
7 | 6 | ancoms 459 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → ((card‘𝐵) ∈ (card‘𝐴) ↔ 𝐵 ≺ 𝐴)) |
8 | 7 | notbid 318 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → (¬ (card‘𝐵) ∈ (card‘𝐴) ↔ ¬ 𝐵 ≺ 𝐴)) |
9 | 5, 8 | bitrid 282 | . 2 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → ((card‘𝐴) ⊆ (card‘𝐵) ↔ ¬ 𝐵 ≺ 𝐴)) |
10 | 1, 9 | bitr3d 280 | 1 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → (𝐴 ≼ 𝐵 ↔ ¬ 𝐵 ≺ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 ∈ wcel 2106 ⊆ wss 3888 class class class wbr 5076 dom cdm 5591 Oncon0 6268 ‘cfv 6435 ≼ cdom 8729 ≺ csdm 8730 cardccrd 9691 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5225 ax-nul 5232 ax-pow 5290 ax-pr 5354 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3433 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-pss 3907 df-nul 4259 df-if 4462 df-pw 4537 df-sn 4564 df-pr 4566 df-op 4570 df-uni 4842 df-int 4882 df-br 5077 df-opab 5139 df-mpt 5160 df-tr 5194 df-id 5491 df-eprel 5497 df-po 5505 df-so 5506 df-fr 5546 df-we 5548 df-xp 5597 df-rel 5598 df-cnv 5599 df-co 5600 df-dm 5601 df-rn 5602 df-res 5603 df-ima 5604 df-ord 6271 df-on 6272 df-iota 6393 df-fun 6437 df-fn 6438 df-f 6439 df-f1 6440 df-fo 6441 df-f1o 6442 df-fv 6443 df-er 8496 df-en 8732 df-dom 8733 df-sdom 8734 df-card 9695 |
This theorem is referenced by: fidomtri 9749 harsdom 9751 infdif 9963 infdif2 9964 infunsdom1 9967 infunsdom 9968 infxp 9969 domtri 10310 canthp1lem2 10407 pwfseqlem4a 10415 pwfseqlem4 10416 gchaleph 10425 numinfctb 40925 |
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