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Theorem nnaord 6105
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.)
Assertion
Ref Expression
nnaord ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴𝐵 ↔ (𝐶 +𝑜 𝐴) ∈ (𝐶 +𝑜 𝐵)))

Proof of Theorem nnaord
StepHypRef Expression
1 nnaordi 6104 . . 3 ((𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴𝐵 → (𝐶 +𝑜 𝐴) ∈ (𝐶 +𝑜 𝐵)))
213adant1 956 . 2 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴𝐵 → (𝐶 +𝑜 𝐴) ∈ (𝐶 +𝑜 𝐵)))
3 oveq2 5540 . . . . . 6 (𝐴 = 𝐵 → (𝐶 +𝑜 𝐴) = (𝐶 +𝑜 𝐵))
43a1i 9 . . . . 5 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴 = 𝐵 → (𝐶 +𝑜 𝐴) = (𝐶 +𝑜 𝐵)))
5 nnaordi 6104 . . . . . 6 ((𝐴 ∈ ω ∧ 𝐶 ∈ ω) → (𝐵𝐴 → (𝐶 +𝑜 𝐵) ∈ (𝐶 +𝑜 𝐴)))
653adant2 957 . . . . 5 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐵𝐴 → (𝐶 +𝑜 𝐵) ∈ (𝐶 +𝑜 𝐴)))
74, 6orim12d 732 . . . 4 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → ((𝐴 = 𝐵𝐵𝐴) → ((𝐶 +𝑜 𝐴) = (𝐶 +𝑜 𝐵) ∨ (𝐶 +𝑜 𝐵) ∈ (𝐶 +𝑜 𝐴))))
87con3d 593 . . 3 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (¬ ((𝐶 +𝑜 𝐴) = (𝐶 +𝑜 𝐵) ∨ (𝐶 +𝑜 𝐵) ∈ (𝐶 +𝑜 𝐴)) → ¬ (𝐴 = 𝐵𝐵𝐴)))
9 df-3an 921 . . . . . 6 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) ↔ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ 𝐶 ∈ ω))
10 ancom 262 . . . . . 6 (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ 𝐶 ∈ ω) ↔ (𝐶 ∈ ω ∧ (𝐴 ∈ ω ∧ 𝐵 ∈ ω)))
11 anandi 554 . . . . . 6 ((𝐶 ∈ ω ∧ (𝐴 ∈ ω ∧ 𝐵 ∈ ω)) ↔ ((𝐶 ∈ ω ∧ 𝐴 ∈ ω) ∧ (𝐶 ∈ ω ∧ 𝐵 ∈ ω)))
129, 10, 113bitri 204 . . . . 5 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) ↔ ((𝐶 ∈ ω ∧ 𝐴 ∈ ω) ∧ (𝐶 ∈ ω ∧ 𝐵 ∈ ω)))
13 nnacl 6082 . . . . . 6 ((𝐶 ∈ ω ∧ 𝐴 ∈ ω) → (𝐶 +𝑜 𝐴) ∈ ω)
14 nnacl 6082 . . . . . 6 ((𝐶 ∈ ω ∧ 𝐵 ∈ ω) → (𝐶 +𝑜 𝐵) ∈ ω)
1513, 14anim12i 331 . . . . 5 (((𝐶 ∈ ω ∧ 𝐴 ∈ ω) ∧ (𝐶 ∈ ω ∧ 𝐵 ∈ ω)) → ((𝐶 +𝑜 𝐴) ∈ ω ∧ (𝐶 +𝑜 𝐵) ∈ ω))
1612, 15sylbi 119 . . . 4 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → ((𝐶 +𝑜 𝐴) ∈ ω ∧ (𝐶 +𝑜 𝐵) ∈ ω))
17 nntri2 6096 . . . 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))))
1816, 17syl 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 6096 . . . 4 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → (𝐴𝐵 ↔ ¬ (𝐴 = 𝐵𝐵𝐴)))
20193adant3 958 . . 3 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴𝐵 ↔ ¬ (𝐴 = 𝐵𝐵𝐴)))
218, 18, 203imtr4d 201 . 2 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → ((𝐶 +𝑜 𝐴) ∈ (𝐶 +𝑜 𝐵) → 𝐴𝐵))
222, 21impbid 127 1 ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐶 ∈ ω) → (𝐴𝐵 ↔ (𝐶 +𝑜 𝐴) ∈ (𝐶 +𝑜 𝐵)))
Colors of variables: wff set class
Syntax hints:  ¬ wn 3  wi 4  wa 102  wb 103  wo 661  w3a 919   = wceq 1284  wcel 1433  ωcom 4331  (class class class)co 5532   +𝑜 coa 6021
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-in1 576  ax-in2 577  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-13 1444  ax-14 1445  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063  ax-coll 3893  ax-sep 3896  ax-nul 3904  ax-pow 3948  ax-pr 3964  ax-un 4188  ax-setind 4280  ax-iinf 4329
This theorem depends on definitions:  df-bi 115  df-3or 920  df-3an 921  df-tru 1287  df-fal 1290  df-nf 1390  df-sb 1686  df-eu 1944  df-mo 1945  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ne 2246  df-ral 2353  df-rex 2354  df-reu 2355  df-rab 2357  df-v 2603  df-sbc 2816  df-csb 2909  df-dif 2975  df-un 2977  df-in 2979  df-ss 2986  df-nul 3252  df-pw 3384  df-sn 3404  df-pr 3405  df-op 3407  df-uni 3602  df-int 3637  df-iun 3680  df-br 3786  df-opab 3840  df-mpt 3841  df-tr 3876  df-id 4048  df-iord 4121  df-on 4123  df-suc 4126  df-iom 4332  df-xp 4369  df-rel 4370  df-cnv 4371  df-co 4372  df-dm 4373  df-rn 4374  df-res 4375  df-ima 4376  df-iota 4887  df-fun 4924  df-fn 4925  df-f 4926  df-f1 4927  df-fo 4928  df-f1o 4929  df-fv 4930  df-ov 5535  df-oprab 5536  df-mpt2 5537  df-1st 5787  df-2nd 5788  df-recs 5943  df-irdg 5980  df-oadd 6028
This theorem is referenced by:  nnaordr  6106  nnaordex  6123  ltapig  6528  1lt2pi  6530
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