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Mirrors > Home > MPE Home > Th. List > nndomog | Structured version Visualization version GIF version |
Description: Cardinal ordering agrees with ordinal number ordering when the smaller number is a natural number. Compare with nndomo 8947 when both are natural numbers. (Contributed by NM, 17-Jun-1998.) Generalize from nndomo 8947. (Revised by RP, 5-Nov-2023.) |
Ref | Expression |
---|---|
nndomog | ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 ↔ 𝐴 ⊆ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | php2 8898 | . . . . . 6 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ⊊ 𝐴) → 𝐵 ≺ 𝐴) | |
2 | 1 | ex 412 | . . . . 5 ⊢ (𝐴 ∈ ω → (𝐵 ⊊ 𝐴 → 𝐵 ≺ 𝐴)) |
3 | domnsym 8839 | . . . . 5 ⊢ (𝐴 ≼ 𝐵 → ¬ 𝐵 ≺ 𝐴) | |
4 | 2, 3 | nsyli 157 | . . . 4 ⊢ (𝐴 ∈ ω → (𝐴 ≼ 𝐵 → ¬ 𝐵 ⊊ 𝐴)) |
5 | 4 | adantr 480 | . . 3 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 → ¬ 𝐵 ⊊ 𝐴)) |
6 | nnord 7695 | . . . 4 ⊢ (𝐴 ∈ ω → Ord 𝐴) | |
7 | eloni 6261 | . . . 4 ⊢ (𝐵 ∈ On → Ord 𝐵) | |
8 | ordtri1 6284 | . . . . 5 ⊢ ((Ord 𝐴 ∧ Ord 𝐵) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) | |
9 | ordelpss 6279 | . . . . . . 7 ⊢ ((Ord 𝐵 ∧ Ord 𝐴) → (𝐵 ∈ 𝐴 ↔ 𝐵 ⊊ 𝐴)) | |
10 | 9 | ancoms 458 | . . . . . 6 ⊢ ((Ord 𝐴 ∧ Ord 𝐵) → (𝐵 ∈ 𝐴 ↔ 𝐵 ⊊ 𝐴)) |
11 | 10 | notbid 317 | . . . . 5 ⊢ ((Ord 𝐴 ∧ Ord 𝐵) → (¬ 𝐵 ∈ 𝐴 ↔ ¬ 𝐵 ⊊ 𝐴)) |
12 | 8, 11 | bitrd 278 | . . . 4 ⊢ ((Ord 𝐴 ∧ Ord 𝐵) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ⊊ 𝐴)) |
13 | 6, 7, 12 | syl2an 595 | . . 3 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ⊊ 𝐴)) |
14 | 5, 13 | sylibrd 258 | . 2 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 → 𝐴 ⊆ 𝐵)) |
15 | ssdomg 8741 | . . 3 ⊢ (𝐵 ∈ On → (𝐴 ⊆ 𝐵 → 𝐴 ≼ 𝐵)) | |
16 | 15 | adantl 481 | . 2 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 → 𝐴 ≼ 𝐵)) |
17 | 14, 16 | impbid 211 | 1 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 ↔ 𝐴 ⊆ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∈ wcel 2108 ⊆ wss 3883 ⊊ wpss 3884 class class class wbr 5070 Ord word 6250 Oncon0 6251 ωcom 7687 ≼ cdom 8689 ≺ csdm 8690 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-om 7688 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 |
This theorem is referenced by: nndomo 8947 harsucnn 9687 |
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