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Theorem wepo 4504
Description: A well-ordering is a partial ordering. (Contributed by Jim Kingdon, 23-Sep-2021.)
Assertion
Ref Expression
wepo ((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) → 𝑅 Po 𝐴)

Proof of Theorem wepo
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 wefr 4503 . . . 4 (𝑅 We 𝐴 → 𝑅 Fr 𝐴)
2 frirrg 4495 . . . 4 ((𝑅 Fr 𝐴 ∧ 𝐴 ∈ 𝑉 ∧ 𝑥 ∈ 𝐴) → ¬ 𝑥𝑅𝑥)
31, 2syl3an1 1311 . . 3 ((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉 ∧ 𝑥 ∈ 𝐴) → ¬ 𝑥𝑅𝑥)
433expa 1234 . 2 (((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) ∧ 𝑥 ∈ 𝐴) → ¬ 𝑥𝑅𝑥)
5 df-3an 1011 . . 3 ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴) ↔ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴))
6 df-wetr 4479 . . . . . . . . . 10 (𝑅 We 𝐴 ↔ (𝑅 Fr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧)))
76simprbi 275 . . . . . . . . 9 (𝑅 We 𝐴 → ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
87adantr 276 . . . . . . . 8 ((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) → ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
98r19.21bi 2638 . . . . . . 7 (((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) ∧ 𝑥 ∈ 𝐴) → ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
109r19.21bi 2638 . . . . . 6 ((((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐴) → ∀𝑧 ∈ 𝐴 ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
1110anasss 403 . . . . 5 (((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴)) → ∀𝑧 ∈ 𝐴 ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
1211r19.21bi 2638 . . . 4 ((((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴)) ∧ 𝑧 ∈ 𝐴) → ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
1312anasss 403 . . 3 (((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) ∧ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴)) → ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
145, 13sylan2b 287 . 2 (((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) → ((𝑥𝑅𝑦 ∧ 𝑦𝑅𝑧) → 𝑥𝑅𝑧))
154, 14ispod 4449 1 ((𝑅 We 𝐴 ∧ 𝐴 ∈ 𝑉) → 𝑅 Po 𝐴)
Colors of variables:    wff set class
This proof depends on syntax axioms:  ¬ wn 3   → wi 4   ∧ wa 104   ∧ w3a 1009   ∈ wcel 2209  ∀wral 2528   class class class wbr 4130   Po wpo 4439   Fr wfr 4473   We wwe 4475
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-sep 4249
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-v 2823  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-sn 3715  df-pr 3716  df-op 3718  df-br 4131  df-po 4441  df-frfor 4476  df-frind 4477  df-wetr 4479
This theorem is used by: (None)
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