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Mirrors > Home > ILE Home > Th. List > nnaord | GIF version |
Description: Ordering property of addition. Proposition 8.4 of [TakeutiZaring] p. 58, limited to natural numbers, and its converse. (Contributed by NM, 7-Mar-1996.) (Revised by Mario Carneiro, 15-Nov-2014.) |
Ref | Expression |
---|---|
nnaord | ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴 ∈ 𝐵 ↔ (𝐶 +o 𝐴) ∈ (𝐶 +o 𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnaordi 6476 | . . 3 ⊢ ((𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴 ∈ 𝐵 → (𝐶 +o 𝐴) ∈ (𝐶 +o 𝐵))) | |
2 | 1 | 3adant1 1005 | . 2 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴 ∈ 𝐵 → (𝐶 +o 𝐴) ∈ (𝐶 +o 𝐵))) |
3 | oveq2 5850 | . . . . . 6 ⊢ (𝐴 = 𝐵 → (𝐶 +o 𝐴) = (𝐶 +o 𝐵)) | |
4 | 3 | a1i 9 | . . . . 5 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴 = 𝐵 → (𝐶 +o 𝐴) = (𝐶 +o 𝐵))) |
5 | nnaordi 6476 | . . . . . 6 ⊢ ((𝐴 ∈ ω ∧ 𝐶 ∈ ω) → (𝐵 ∈ 𝐴 → (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴))) | |
6 | 5 | 3adant2 1006 | . . . . 5 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐵 ∈ 𝐴 → (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴))) |
7 | 4, 6 | orim12d 776 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → ((𝐴 = 𝐵 ∨ 𝐵 ∈ 𝐴) → ((𝐶 +o 𝐴) = (𝐶 +o 𝐵) ∨ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴)))) |
8 | 7 | con3d 621 | . . 3 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (¬ ((𝐶 +o 𝐴) = (𝐶 +o 𝐵) ∨ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴)) → ¬ (𝐴 = 𝐵 ∨ 𝐵 ∈ 𝐴))) |
9 | df-3an 970 | . . . . . 6 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) ↔ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ 𝐶 ∈ ω)) | |
10 | ancom 264 | . . . . . 6 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ 𝐶 ∈ ω) ↔ (𝐶 ∈ ω ∧ (𝐴 ∈ ω ∧ 𝐵 ∈ ω))) | |
11 | anandi 580 | . . . . . 6 ⊢ ((𝐶 ∈ ω ∧ (𝐴 ∈ ω ∧ 𝐵 ∈ ω)) ↔ ((𝐶 ∈ ω ∧ 𝐴 ∈ ω) ∧ (𝐶 ∈ ω ∧ 𝐵 ∈ ω))) | |
12 | 9, 10, 11 | 3bitri 205 | . . . . 5 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) ↔ ((𝐶 ∈ ω ∧ 𝐴 ∈ ω) ∧ (𝐶 ∈ ω ∧ 𝐵 ∈ ω))) |
13 | nnacl 6448 | . . . . . 6 ⊢ ((𝐶 ∈ ω ∧ 𝐴 ∈ ω) → (𝐶 +o 𝐴) ∈ ω) | |
14 | nnacl 6448 | . . . . . 6 ⊢ ((𝐶 ∈ ω ∧ 𝐵 ∈ ω) → (𝐶 +o 𝐵) ∈ ω) | |
15 | 13, 14 | anim12i 336 | . . . . 5 ⊢ (((𝐶 ∈ ω ∧ 𝐴 ∈ ω) ∧ (𝐶 ∈ ω ∧ 𝐵 ∈ ω)) → ((𝐶 +o 𝐴) ∈ ω ∧ (𝐶 +o 𝐵) ∈ ω)) |
16 | 12, 15 | sylbi 120 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → ((𝐶 +o 𝐴) ∈ ω ∧ (𝐶 +o 𝐵) ∈ ω)) |
17 | nntri2 6462 | . . . 4 ⊢ (((𝐶 +o 𝐴) ∈ ω ∧ (𝐶 +o 𝐵) ∈ ω) → ((𝐶 +o 𝐴) ∈ (𝐶 +o 𝐵) ↔ ¬ ((𝐶 +o 𝐴) = (𝐶 +o 𝐵) ∨ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴)))) | |
18 | 16, 17 | syl 14 | . . 3 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → ((𝐶 +o 𝐴) ∈ (𝐶 +o 𝐵) ↔ ¬ ((𝐶 +o 𝐴) = (𝐶 +o 𝐵) ∨ (𝐶 +o 𝐵) ∈ (𝐶 +o 𝐴)))) |
19 | nntri2 6462 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → (𝐴 ∈ 𝐵 ↔ ¬ (𝐴 = 𝐵 ∨ 𝐵 ∈ 𝐴))) | |
20 | 19 | 3adant3 1007 | . . 3 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴 ∈ 𝐵 ↔ ¬ (𝐴 = 𝐵 ∨ 𝐵 ∈ 𝐴))) |
21 | 8, 18, 20 | 3imtr4d 202 | . 2 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → ((𝐶 +o 𝐴) ∈ (𝐶 +o 𝐵) → 𝐴 ∈ 𝐵)) |
22 | 2, 21 | impbid 128 | 1 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴 ∈ 𝐵 ↔ (𝐶 +o 𝐴) ∈ (𝐶 +o 𝐵))) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ↔ wb 104 ∨ wo 698 ∧ w3a 968 = wceq 1343 ∈ wcel 2136 ωcom 4567 (class class class)co 5842 +o coa 6381 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-coll 4097 ax-sep 4100 ax-nul 4108 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-iinf 4565 |
This theorem depends on definitions: df-bi 116 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-nul 3410 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-tr 4081 df-id 4271 df-iord 4344 df-on 4346 df-suc 4349 df-iom 4568 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 df-fo 5194 df-f1o 5195 df-fv 5196 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-recs 6273 df-irdg 6338 df-oadd 6388 |
This theorem is referenced by: nnaordr 6478 nnaordex 6495 ltapig 7279 1lt2pi 7281 |
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