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Theorem addextpr 7841
Description: Strong extensionality of addition (ordering version). This is similar to addext 8790 but for positive reals and based on less-than rather than apartness. (Contributed by Jim Kingdon, 17-Feb-2020.)
Assertion
Ref Expression
addextpr (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐷) → (𝐴<P 𝐶𝐵<P 𝐷)))

Proof of Theorem addextpr
Dummy variables 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 addclpr 7757 . . . 4 ((𝐴P𝐵P) → (𝐴 +P 𝐵) ∈ P)
21adantr 276 . . 3 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐴 +P 𝐵) ∈ P)
3 addclpr 7757 . . . 4 ((𝐶P𝐷P) → (𝐶 +P 𝐷) ∈ P)
43adantl 277 . . 3 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐶 +P 𝐷) ∈ P)
5 simprl 531 . . . 4 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → 𝐶P)
6 simplr 529 . . . 4 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → 𝐵P)
7 addclpr 7757 . . . 4 ((𝐶P𝐵P) → (𝐶 +P 𝐵) ∈ P)
85, 6, 7syl2anc 411 . . 3 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐶 +P 𝐵) ∈ P)
9 ltsopr 7816 . . . 4 <P Or P
10 sowlin 4417 . . . 4 ((<P Or P ∧ ((𝐴 +P 𝐵) ∈ P ∧ (𝐶 +P 𝐷) ∈ P ∧ (𝐶 +P 𝐵) ∈ P)) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐷) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐵) ∨ (𝐶 +P 𝐵)<P (𝐶 +P 𝐷))))
119, 10mpan 424 . . 3 (((𝐴 +P 𝐵) ∈ P ∧ (𝐶 +P 𝐷) ∈ P ∧ (𝐶 +P 𝐵) ∈ P) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐷) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐵) ∨ (𝐶 +P 𝐵)<P (𝐶 +P 𝐷))))
122, 4, 8, 11syl3anc 1273 . 2 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐷) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐵) ∨ (𝐶 +P 𝐵)<P (𝐶 +P 𝐷))))
13 simpll 527 . . . . 5 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → 𝐴P)
14 ltaprg 7839 . . . . 5 ((𝐴P𝐶P𝐵P) → (𝐴<P 𝐶 ↔ (𝐵 +P 𝐴)<P (𝐵 +P 𝐶)))
1513, 5, 6, 14syl3anc 1273 . . . 4 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐴<P 𝐶 ↔ (𝐵 +P 𝐴)<P (𝐵 +P 𝐶)))
16 addcomprg 7798 . . . . . . 7 ((𝑓P𝑔P) → (𝑓 +P 𝑔) = (𝑔 +P 𝑓))
1716adantl 277 . . . . . 6 ((((𝐴P𝐵P) ∧ (𝐶P𝐷P)) ∧ (𝑓P𝑔P)) → (𝑓 +P 𝑔) = (𝑔 +P 𝑓))
1817, 13, 6caovcomd 6179 . . . . 5 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐴 +P 𝐵) = (𝐵 +P 𝐴))
1917, 5, 6caovcomd 6179 . . . . 5 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐶 +P 𝐵) = (𝐵 +P 𝐶))
2018, 19breq12d 4101 . . . 4 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐵) ↔ (𝐵 +P 𝐴)<P (𝐵 +P 𝐶)))
2115, 20bitr4d 191 . . 3 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐴<P 𝐶 ↔ (𝐴 +P 𝐵)<P (𝐶 +P 𝐵)))
22 simprr 533 . . . 4 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → 𝐷P)
23 ltaprg 7839 . . . 4 ((𝐵P𝐷P𝐶P) → (𝐵<P 𝐷 ↔ (𝐶 +P 𝐵)<P (𝐶 +P 𝐷)))
246, 22, 5, 23syl3anc 1273 . . 3 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → (𝐵<P 𝐷 ↔ (𝐶 +P 𝐵)<P (𝐶 +P 𝐷)))
2521, 24orbi12d 800 . 2 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → ((𝐴<P 𝐶𝐵<P 𝐷) ↔ ((𝐴 +P 𝐵)<P (𝐶 +P 𝐵) ∨ (𝐶 +P 𝐵)<P (𝐶 +P 𝐷))))
2612, 25sylibrd 169 1 (((𝐴P𝐵P) ∧ (𝐶P𝐷P)) → ((𝐴 +P 𝐵)<P (𝐶 +P 𝐷) → (𝐴<P 𝐶𝐵<P 𝐷)))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105  wo 715  w3a 1004   = wceq 1397  wcel 2202   class class class wbr 4088   Or wor 4392  (class class class)co 6018  Pcnp 7511   +P cpp 7513  <P cltp 7515
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-nul 4215  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-iinf 4686
This theorem depends on definitions:  df-bi 117  df-dc 842  df-3or 1005  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-tr 4188  df-eprel 4386  df-id 4390  df-po 4393  df-iso 4394  df-iord 4463  df-on 4465  df-suc 4468  df-iom 4689  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-ov 6021  df-oprab 6022  df-mpo 6023  df-1st 6303  df-2nd 6304  df-recs 6471  df-irdg 6536  df-1o 6582  df-2o 6583  df-oadd 6586  df-omul 6587  df-er 6702  df-ec 6704  df-qs 6708  df-ni 7524  df-pli 7525  df-mi 7526  df-lti 7527  df-plpq 7564  df-mpq 7565  df-enq 7567  df-nqqs 7568  df-plqqs 7569  df-mqqs 7570  df-1nqqs 7571  df-rq 7572  df-ltnqqs 7573  df-enq0 7644  df-nq0 7645  df-0nq0 7646  df-plq0 7647  df-mq0 7648  df-inp 7686  df-iplp 7688  df-iltp 7690
This theorem is referenced by:  mulextsr1lem  8000
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