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Theorem wemappo 9000
 Description: Construct lexicographic order on a function space based on a well-ordering of the indices and a total ordering of the values. Without totality on the values or least differing indices, the best we can prove here is a partial order. (Contributed by Stefan O'Rear, 18-Jan-2015.) (Revised by AV, 21-Jul-2024.)
Hypothesis
Ref Expression
wemapso.t 𝑇 = {⟨𝑥, 𝑦⟩ ∣ ∃𝑧𝐴 ((𝑥𝑧)𝑆(𝑦𝑧) ∧ ∀𝑤𝐴 (𝑤𝑅𝑧 → (𝑥𝑤) = (𝑦𝑤)))}
Assertion
Ref Expression
wemappo ((𝑅 Or 𝐴𝑆 Po 𝐵) → 𝑇 Po (𝐵m 𝐴))
Distinct variable groups:   𝑥,𝐵   𝑥,𝑤,𝑦,𝑧,𝐴   𝑤,𝑅,𝑥,𝑦,𝑧   𝑤,𝑆,𝑥,𝑦,𝑧
Allowed substitution hints:   𝐵(𝑦,𝑧,𝑤)   𝑇(𝑥,𝑦,𝑧,𝑤)

Proof of Theorem wemappo
Dummy variables 𝑎 𝑏 𝑐 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simpllr 775 . . . . . 6 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ 𝑎 ∈ (𝐵m 𝐴)) ∧ 𝑏𝐴) → 𝑆 Po 𝐵)
2 elmapi 8414 . . . . . . . 8 (𝑎 ∈ (𝐵m 𝐴) → 𝑎:𝐴𝐵)
32adantl 485 . . . . . . 7 (((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ 𝑎 ∈ (𝐵m 𝐴)) → 𝑎:𝐴𝐵)
43ffvelrnda 6829 . . . . . 6 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ 𝑎 ∈ (𝐵m 𝐴)) ∧ 𝑏𝐴) → (𝑎𝑏) ∈ 𝐵)
5 poirr 5450 . . . . . 6 ((𝑆 Po 𝐵 ∧ (𝑎𝑏) ∈ 𝐵) → ¬ (𝑎𝑏)𝑆(𝑎𝑏))
61, 4, 5syl2anc 587 . . . . 5 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ 𝑎 ∈ (𝐵m 𝐴)) ∧ 𝑏𝐴) → ¬ (𝑎𝑏)𝑆(𝑎𝑏))
76intnanrd 493 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ 𝑎 ∈ (𝐵m 𝐴)) ∧ 𝑏𝐴) → ¬ ((𝑎𝑏)𝑆(𝑎𝑏) ∧ ∀𝑐𝐴 (𝑐𝑅𝑏 → (𝑎𝑐) = (𝑎𝑐))))
87nrexdv 3229 . . 3 (((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ 𝑎 ∈ (𝐵m 𝐴)) → ¬ ∃𝑏𝐴 ((𝑎𝑏)𝑆(𝑎𝑏) ∧ ∀𝑐𝐴 (𝑐𝑅𝑏 → (𝑎𝑐) = (𝑎𝑐))))
9 wemapso.t . . . . 5 𝑇 = {⟨𝑥, 𝑦⟩ ∣ ∃𝑧𝐴 ((𝑥𝑧)𝑆(𝑦𝑧) ∧ ∀𝑤𝐴 (𝑤𝑅𝑧 → (𝑥𝑤) = (𝑦𝑤)))}
109wemaplem1 8997 . . . 4 ((𝑎 ∈ V ∧ 𝑎 ∈ V) → (𝑎𝑇𝑎 ↔ ∃𝑏𝐴 ((𝑎𝑏)𝑆(𝑎𝑏) ∧ ∀𝑐𝐴 (𝑐𝑅𝑏 → (𝑎𝑐) = (𝑎𝑐)))))
1110el2v 3448 . . 3 (𝑎𝑇𝑎 ↔ ∃𝑏𝐴 ((𝑎𝑏)𝑆(𝑎𝑏) ∧ ∀𝑐𝐴 (𝑐𝑅𝑏 → (𝑎𝑐) = (𝑎𝑐))))
128, 11sylnibr 332 . 2 (((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ 𝑎 ∈ (𝐵m 𝐴)) → ¬ 𝑎𝑇𝑎)
13 simplr1 1212 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑎 ∈ (𝐵m 𝐴))
14 simplr2 1213 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑏 ∈ (𝐵m 𝐴))
15 simplr3 1214 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑐 ∈ (𝐵m 𝐴))
16 simplll 774 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑅 Or 𝐴)
17 simpllr 775 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑆 Po 𝐵)
18 simprl 770 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑎𝑇𝑏)
19 simprr 772 . . . 4 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑏𝑇𝑐)
209, 13, 14, 15, 16, 17, 18, 19wemaplem3 8999 . . 3 ((((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) ∧ (𝑎𝑇𝑏𝑏𝑇𝑐)) → 𝑎𝑇𝑐)
2120ex 416 . 2 (((𝑅 Or 𝐴𝑆 Po 𝐵) ∧ (𝑎 ∈ (𝐵m 𝐴) ∧ 𝑏 ∈ (𝐵m 𝐴) ∧ 𝑐 ∈ (𝐵m 𝐴))) → ((𝑎𝑇𝑏𝑏𝑇𝑐) → 𝑎𝑇𝑐))
2212, 21ispod 5447 1 ((𝑅 Or 𝐴𝑆 Po 𝐵) → 𝑇 Po (𝐵m 𝐴))
 Colors of variables: wff setvar class Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 209   ∧ wa 399   ∧ w3a 1084   = wceq 1538   ∈ wcel 2111  ∀wral 3106  ∃wrex 3107  Vcvv 3441   class class class wbr 5031  {copab 5093   Po wpo 5437   Or wor 5438  ⟶wf 6321  ‘cfv 6325  (class class class)co 7136   ↑m cmap 8392 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5168  ax-nul 5175  ax-pow 5232  ax-pr 5296  ax-un 7444 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ne 2988  df-ral 3111  df-rex 3112  df-rab 3115  df-v 3443  df-sbc 3721  df-csb 3829  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-nul 4244  df-if 4426  df-pw 4499  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4802  df-iun 4884  df-br 5032  df-opab 5094  df-mpt 5112  df-id 5426  df-po 5439  df-so 5440  df-xp 5526  df-rel 5527  df-cnv 5528  df-co 5529  df-dm 5530  df-rn 5531  df-res 5532  df-ima 5533  df-iota 6284  df-fun 6327  df-fn 6328  df-f 6329  df-fv 6333  df-ov 7139  df-oprab 7140  df-mpo 7141  df-1st 7674  df-2nd 7675  df-map 8394 This theorem is referenced by:  wemapsolem  9001
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