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Theorem ltaprg 7950
Description: Ordering property of addition. Proposition 9-3.5(v) of [Gleason] p. 123. (Contributed by Jim Kingdon, 26-Dec-2019.)
Assertion
Ref Expression
ltaprg ((𝐴P𝐵P𝐶P) → (𝐴<P 𝐵 ↔ (𝐶 +P 𝐴)<P (𝐶 +P 𝐵)))

Proof of Theorem ltaprg
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 ltaprlem 7949 . . 3 (𝐶P → (𝐴<P 𝐵 → (𝐶 +P 𝐴)<P (𝐶 +P 𝐵)))
213ad2ant3 1047 . 2 ((𝐴P𝐵P𝐶P) → (𝐴<P 𝐵 → (𝐶 +P 𝐴)<P (𝐶 +P 𝐵)))
3 ltexpri 7944 . . . . 5 ((𝐶 +P 𝐴)<P (𝐶 +P 𝐵) → ∃𝑥P ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))
43adantl 277 . . . 4 (((𝐴P𝐵P𝐶P) ∧ (𝐶 +P 𝐴)<P (𝐶 +P 𝐵)) → ∃𝑥P ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))
5 simpl1 1027 . . . . . . 7 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → 𝐴P)
6 simprl 531 . . . . . . 7 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → 𝑥P)
7 ltaddpr 7928 . . . . . . 7 ((𝐴P𝑥P) → 𝐴<P (𝐴 +P 𝑥))
85, 6, 7syl2anc 411 . . . . . 6 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → 𝐴<P (𝐴 +P 𝑥))
9 addassprg 7910 . . . . . . . . . . . 12 ((𝐶P𝐴P𝑥P) → ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P (𝐴 +P 𝑥)))
1093com12 1234 . . . . . . . . . . 11 ((𝐴P𝐶P𝑥P) → ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P (𝐴 +P 𝑥)))
11103expa 1230 . . . . . . . . . 10 (((𝐴P𝐶P) ∧ 𝑥P) → ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P (𝐴 +P 𝑥)))
1211adantrr 479 . . . . . . . . 9 (((𝐴P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P (𝐴 +P 𝑥)))
13 simprr 533 . . . . . . . . 9 (((𝐴P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))
1412, 13eqtr3d 2269 . . . . . . . 8 (((𝐴P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → (𝐶 +P (𝐴 +P 𝑥)) = (𝐶 +P 𝐵))
15143adantl2 1181 . . . . . . 7 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → (𝐶 +P (𝐴 +P 𝑥)) = (𝐶 +P 𝐵))
16 simpl3 1029 . . . . . . . 8 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → 𝐶P)
17 addclpr 7868 . . . . . . . . 9 ((𝐴P𝑥P) → (𝐴 +P 𝑥) ∈ P)
185, 6, 17syl2anc 411 . . . . . . . 8 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → (𝐴 +P 𝑥) ∈ P)
19 simpl2 1028 . . . . . . . 8 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → 𝐵P)
20 addcanprg 7947 . . . . . . . 8 ((𝐶P ∧ (𝐴 +P 𝑥) ∈ P𝐵P) → ((𝐶 +P (𝐴 +P 𝑥)) = (𝐶 +P 𝐵) → (𝐴 +P 𝑥) = 𝐵))
2116, 18, 19, 20syl3anc 1274 . . . . . . 7 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → ((𝐶 +P (𝐴 +P 𝑥)) = (𝐶 +P 𝐵) → (𝐴 +P 𝑥) = 𝐵))
2215, 21mpd 13 . . . . . 6 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → (𝐴 +P 𝑥) = 𝐵)
238, 22breqtrd 4140 . . . . 5 (((𝐴P𝐵P𝐶P) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → 𝐴<P 𝐵)
2423adantlr 477 . . . 4 ((((𝐴P𝐵P𝐶P) ∧ (𝐶 +P 𝐴)<P (𝐶 +P 𝐵)) ∧ (𝑥P ∧ ((𝐶 +P 𝐴) +P 𝑥) = (𝐶 +P 𝐵))) → 𝐴<P 𝐵)
254, 24rexlimddv 2667 . . 3 (((𝐴P𝐵P𝐶P) ∧ (𝐶 +P 𝐴)<P (𝐶 +P 𝐵)) → 𝐴<P 𝐵)
2625ex 115 . 2 ((𝐴P𝐵P𝐶P) → ((𝐶 +P 𝐴)<P (𝐶 +P 𝐵) → 𝐴<P 𝐵))
272, 26impbid 129 1 ((𝐴P𝐵P𝐶P) → (𝐴<P 𝐵 ↔ (𝐶 +P 𝐴)<P (𝐶 +P 𝐵)))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105  w3a 1005   = wceq 1398  wcel 2205  wrex 2523   class class class wbr 4114  (class class class)co 6058  Pcnp 7622   +P cpp 7624  <P cltp 7626
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4230  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-iinf 4715
This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-tr 4214  df-eprel 4415  df-id 4419  df-po 4422  df-iso 4423  df-iord 4492  df-on 4494  df-suc 4497  df-iom 4718  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-ov 6061  df-oprab 6062  df-mpo 6063  df-1st 6347  df-2nd 6348  df-recs 6549  df-irdg 6614  df-1o 6660  df-2o 6661  df-oadd 6664  df-omul 6665  df-er 6780  df-ec 6782  df-qs 6786  df-ni 7635  df-pli 7636  df-mi 7637  df-lti 7638  df-plpq 7675  df-mpq 7676  df-enq 7678  df-nqqs 7679  df-plqqs 7680  df-mqqs 7681  df-1nqqs 7682  df-rq 7683  df-ltnqqs 7684  df-enq0 7755  df-nq0 7756  df-0nq0 7757  df-plq0 7758  df-mq0 7759  df-inp 7797  df-iplp 7799  df-iltp 7801
This theorem is referenced by:  prplnqu  7951  addextpr  7952  caucvgprlemcanl  7975  caucvgprprlemnkltj  8020  caucvgprprlemnbj  8024  caucvgprprlemmu  8026  caucvgprprlemloc  8034  caucvgprprlemexbt  8037  caucvgprprlemexb  8038  caucvgprprlemaddq  8039  caucvgprprlem1  8040  caucvgprprlem2  8041  ltsrprg  8078  gt0srpr  8079  lttrsr  8093  ltsosr  8095  ltasrg  8101  prsrlt  8118  ltpsrprg  8134  map2psrprg  8136
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