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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 9424 | . 2 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → ((card‘𝐴) ⊆ (card‘𝐵) ↔ 𝐴 ≼ 𝐵)) | |
2 | cardon 9391 | . . . 4 ⊢ (card‘𝐴) ∈ On | |
3 | cardon 9391 | . . . 4 ⊢ (card‘𝐵) ∈ On | |
4 | ontri1 6196 | . . . 4 ⊢ (((card‘𝐴) ∈ On ∧ (card‘𝐵) ∈ On) → ((card‘𝐴) ⊆ (card‘𝐵) ↔ ¬ (card‘𝐵) ∈ (card‘𝐴))) | |
5 | 2, 3, 4 | mp2an 692 | . . 3 ⊢ ((card‘𝐴) ⊆ (card‘𝐵) ↔ ¬ (card‘𝐵) ∈ (card‘𝐴)) |
6 | cardsdom2 9435 | . . . . 5 ⊢ ((𝐵 ∈ dom card ∧ 𝐴 ∈ dom card) → ((card‘𝐵) ∈ (card‘𝐴) ↔ 𝐵 ≺ 𝐴)) | |
7 | 6 | ancoms 463 | . . . 4 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → ((card‘𝐵) ∈ (card‘𝐴) ↔ 𝐵 ≺ 𝐴)) |
8 | 7 | notbid 322 | . . 3 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → (¬ (card‘𝐵) ∈ (card‘𝐴) ↔ ¬ 𝐵 ≺ 𝐴)) |
9 | 5, 8 | syl5bb 286 | . 2 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → ((card‘𝐴) ⊆ (card‘𝐵) ↔ ¬ 𝐵 ≺ 𝐴)) |
10 | 1, 9 | bitr3d 284 | 1 ⊢ ((𝐴 ∈ dom card ∧ 𝐵 ∈ dom card) → (𝐴 ≼ 𝐵 ↔ ¬ 𝐵 ≺ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 ∈ wcel 2112 ⊆ wss 3854 class class class wbr 5025 dom cdm 5517 Oncon0 6162 ‘cfv 6328 ≼ cdom 8518 ≺ csdm 8519 cardccrd 9382 |
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 1912 ax-6 1971 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2159 ax-12 2176 ax-ext 2730 ax-sep 5162 ax-nul 5169 ax-pow 5227 ax-pr 5291 ax-un 7452 |
This theorem depends on definitions: df-bi 210 df-an 401 df-or 846 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2071 df-mo 2558 df-eu 2589 df-clab 2737 df-cleq 2751 df-clel 2831 df-nfc 2899 df-ne 2950 df-ral 3073 df-rex 3074 df-rab 3077 df-v 3409 df-sbc 3694 df-dif 3857 df-un 3859 df-in 3861 df-ss 3871 df-pss 3873 df-nul 4222 df-if 4414 df-pw 4489 df-sn 4516 df-pr 4518 df-tp 4520 df-op 4522 df-uni 4792 df-int 4832 df-br 5026 df-opab 5088 df-mpt 5106 df-tr 5132 df-id 5423 df-eprel 5428 df-po 5436 df-so 5437 df-fr 5476 df-we 5478 df-xp 5523 df-rel 5524 df-cnv 5525 df-co 5526 df-dm 5527 df-rn 5528 df-res 5529 df-ima 5530 df-ord 6165 df-on 6166 df-iota 6287 df-fun 6330 df-fn 6331 df-f 6332 df-f1 6333 df-fo 6334 df-f1o 6335 df-fv 6336 df-er 8292 df-en 8521 df-dom 8522 df-sdom 8523 df-card 9386 |
This theorem is referenced by: fidomtri 9440 harsdom 9442 infdif 9654 infdif2 9655 infunsdom1 9658 infunsdom 9659 infxp 9660 domtri 10001 canthp1lem2 10098 pwfseqlem4a 10106 pwfseqlem4 10107 gchaleph 10116 numinfctb 40405 |
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