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Theorem dfon2lem4 35228
Description: Lemma for dfon2 35234. If two sets satisfy the new definition, then one is a subset of the other. (Contributed by Scott Fenton, 25-Feb-2011.)
Hypotheses
Ref Expression
dfon2lem4.1 𝐴 ∈ V
dfon2lem4.2 𝐵 ∈ V
Assertion
Ref Expression
dfon2lem4 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → (𝐴𝐵𝐵𝐴))
Distinct variable groups:   𝑥,𝐴,𝑦   𝑥,𝐵,𝑦

Proof of Theorem dfon2lem4
Dummy variable 𝑧 is distinct from all other variables.
StepHypRef Expression
1 inss1 4228 . . . . . . . . 9 (𝐴𝐵) ⊆ 𝐴
21sseli 3978 . . . . . . . 8 ((𝐴𝐵) ∈ (𝐴𝐵) → (𝐴𝐵) ∈ 𝐴)
3 dfon2lem4.1 . . . . . . . . . . . 12 𝐴 ∈ V
4 dfon2lem3 35227 . . . . . . . . . . . 12 (𝐴 ∈ V → (∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) → (Tr 𝐴 ∧ ∀𝑧𝐴 ¬ 𝑧𝑧)))
53, 4ax-mp 5 . . . . . . . . . . 11 (∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) → (Tr 𝐴 ∧ ∀𝑧𝐴 ¬ 𝑧𝑧))
65simprd 495 . . . . . . . . . 10 (∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) → ∀𝑧𝐴 ¬ 𝑧𝑧)
7 eleq1 2820 . . . . . . . . . . . . 13 (𝑧 = (𝐴𝐵) → (𝑧𝑧 ↔ (𝐴𝐵) ∈ 𝑧))
8 eleq2 2821 . . . . . . . . . . . . 13 (𝑧 = (𝐴𝐵) → ((𝐴𝐵) ∈ 𝑧 ↔ (𝐴𝐵) ∈ (𝐴𝐵)))
97, 8bitrd 279 . . . . . . . . . . . 12 (𝑧 = (𝐴𝐵) → (𝑧𝑧 ↔ (𝐴𝐵) ∈ (𝐴𝐵)))
109notbid 318 . . . . . . . . . . 11 (𝑧 = (𝐴𝐵) → (¬ 𝑧𝑧 ↔ ¬ (𝐴𝐵) ∈ (𝐴𝐵)))
1110rspccv 3609 . . . . . . . . . 10 (∀𝑧𝐴 ¬ 𝑧𝑧 → ((𝐴𝐵) ∈ 𝐴 → ¬ (𝐴𝐵) ∈ (𝐴𝐵)))
126, 11syl 17 . . . . . . . . 9 (∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) → ((𝐴𝐵) ∈ 𝐴 → ¬ (𝐴𝐵) ∈ (𝐴𝐵)))
1312adantr 480 . . . . . . . 8 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ((𝐴𝐵) ∈ 𝐴 → ¬ (𝐴𝐵) ∈ (𝐴𝐵)))
142, 13syl5 34 . . . . . . 7 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ((𝐴𝐵) ∈ (𝐴𝐵) → ¬ (𝐴𝐵) ∈ (𝐴𝐵)))
1514pm2.01d 189 . . . . . 6 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ¬ (𝐴𝐵) ∈ (𝐴𝐵))
16 elin 3964 . . . . . 6 ((𝐴𝐵) ∈ (𝐴𝐵) ↔ ((𝐴𝐵) ∈ 𝐴 ∧ (𝐴𝐵) ∈ 𝐵))
1715, 16sylnib 328 . . . . 5 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ¬ ((𝐴𝐵) ∈ 𝐴 ∧ (𝐴𝐵) ∈ 𝐵))
185simpld 494 . . . . . . . 8 (∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) → Tr 𝐴)
19 dfon2lem4.2 . . . . . . . . . 10 𝐵 ∈ V
20 dfon2lem3 35227 . . . . . . . . . 10 (𝐵 ∈ V → (∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵) → (Tr 𝐵 ∧ ∀𝑧𝐵 ¬ 𝑧𝑧)))
2119, 20ax-mp 5 . . . . . . . . 9 (∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵) → (Tr 𝐵 ∧ ∀𝑧𝐵 ¬ 𝑧𝑧))
2221simpld 494 . . . . . . . 8 (∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵) → Tr 𝐵)
23 trin 5277 . . . . . . . 8 ((Tr 𝐴 ∧ Tr 𝐵) → Tr (𝐴𝐵))
2418, 22, 23syl2an 595 . . . . . . 7 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → Tr (𝐴𝐵))
253inex1 5317 . . . . . . . . 9 (𝐴𝐵) ∈ V
26 psseq1 4087 . . . . . . . . . . 11 (𝑥 = (𝐴𝐵) → (𝑥𝐴 ↔ (𝐴𝐵) ⊊ 𝐴))
27 treq 5273 . . . . . . . . . . 11 (𝑥 = (𝐴𝐵) → (Tr 𝑥 ↔ Tr (𝐴𝐵)))
2826, 27anbi12d 630 . . . . . . . . . 10 (𝑥 = (𝐴𝐵) → ((𝑥𝐴 ∧ Tr 𝑥) ↔ ((𝐴𝐵) ⊊ 𝐴 ∧ Tr (𝐴𝐵))))
29 eleq1 2820 . . . . . . . . . 10 (𝑥 = (𝐴𝐵) → (𝑥𝐴 ↔ (𝐴𝐵) ∈ 𝐴))
3028, 29imbi12d 344 . . . . . . . . 9 (𝑥 = (𝐴𝐵) → (((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ↔ (((𝐴𝐵) ⊊ 𝐴 ∧ Tr (𝐴𝐵)) → (𝐴𝐵) ∈ 𝐴)))
3125, 30spcv 3595 . . . . . . . 8 (∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) → (((𝐴𝐵) ⊊ 𝐴 ∧ Tr (𝐴𝐵)) → (𝐴𝐵) ∈ 𝐴))
3231adantr 480 . . . . . . 7 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → (((𝐴𝐵) ⊊ 𝐴 ∧ Tr (𝐴𝐵)) → (𝐴𝐵) ∈ 𝐴))
3324, 32mpan2d 691 . . . . . 6 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ((𝐴𝐵) ⊊ 𝐴 → (𝐴𝐵) ∈ 𝐴))
34 psseq1 4087 . . . . . . . . . . 11 (𝑦 = (𝐴𝐵) → (𝑦𝐵 ↔ (𝐴𝐵) ⊊ 𝐵))
35 treq 5273 . . . . . . . . . . 11 (𝑦 = (𝐴𝐵) → (Tr 𝑦 ↔ Tr (𝐴𝐵)))
3634, 35anbi12d 630 . . . . . . . . . 10 (𝑦 = (𝐴𝐵) → ((𝑦𝐵 ∧ Tr 𝑦) ↔ ((𝐴𝐵) ⊊ 𝐵 ∧ Tr (𝐴𝐵))))
37 eleq1 2820 . . . . . . . . . 10 (𝑦 = (𝐴𝐵) → (𝑦𝐵 ↔ (𝐴𝐵) ∈ 𝐵))
3836, 37imbi12d 344 . . . . . . . . 9 (𝑦 = (𝐴𝐵) → (((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵) ↔ (((𝐴𝐵) ⊊ 𝐵 ∧ Tr (𝐴𝐵)) → (𝐴𝐵) ∈ 𝐵)))
3925, 38spcv 3595 . . . . . . . 8 (∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵) → (((𝐴𝐵) ⊊ 𝐵 ∧ Tr (𝐴𝐵)) → (𝐴𝐵) ∈ 𝐵))
4039adantl 481 . . . . . . 7 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → (((𝐴𝐵) ⊊ 𝐵 ∧ Tr (𝐴𝐵)) → (𝐴𝐵) ∈ 𝐵))
4124, 40mpan2d 691 . . . . . 6 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ((𝐴𝐵) ⊊ 𝐵 → (𝐴𝐵) ∈ 𝐵))
4233, 41anim12d 608 . . . . 5 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → (((𝐴𝐵) ⊊ 𝐴 ∧ (𝐴𝐵) ⊊ 𝐵) → ((𝐴𝐵) ∈ 𝐴 ∧ (𝐴𝐵) ∈ 𝐵)))
4317, 42mtod 197 . . . 4 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ¬ ((𝐴𝐵) ⊊ 𝐴 ∧ (𝐴𝐵) ⊊ 𝐵))
44 ianor 979 . . . 4 (¬ ((𝐴𝐵) ⊊ 𝐴 ∧ (𝐴𝐵) ⊊ 𝐵) ↔ (¬ (𝐴𝐵) ⊊ 𝐴 ∨ ¬ (𝐴𝐵) ⊊ 𝐵))
4543, 44sylib 217 . . 3 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → (¬ (𝐴𝐵) ⊊ 𝐴 ∨ ¬ (𝐴𝐵) ⊊ 𝐵))
46 sspss 4099 . . . . 5 ((𝐴𝐵) ⊆ 𝐴 ↔ ((𝐴𝐵) ⊊ 𝐴 ∨ (𝐴𝐵) = 𝐴))
471, 46mpbi 229 . . . 4 ((𝐴𝐵) ⊊ 𝐴 ∨ (𝐴𝐵) = 𝐴)
48 inss2 4229 . . . . 5 (𝐴𝐵) ⊆ 𝐵
49 sspss 4099 . . . . 5 ((𝐴𝐵) ⊆ 𝐵 ↔ ((𝐴𝐵) ⊊ 𝐵 ∨ (𝐴𝐵) = 𝐵))
5048, 49mpbi 229 . . . 4 ((𝐴𝐵) ⊊ 𝐵 ∨ (𝐴𝐵) = 𝐵)
51 orel1 886 . . . . . 6 (¬ (𝐴𝐵) ⊊ 𝐴 → (((𝐴𝐵) ⊊ 𝐴 ∨ (𝐴𝐵) = 𝐴) → (𝐴𝐵) = 𝐴))
52 orc 864 . . . . . 6 ((𝐴𝐵) = 𝐴 → ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵))
5351, 52syl6 35 . . . . 5 (¬ (𝐴𝐵) ⊊ 𝐴 → (((𝐴𝐵) ⊊ 𝐴 ∨ (𝐴𝐵) = 𝐴) → ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵)))
54 orel1 886 . . . . . 6 (¬ (𝐴𝐵) ⊊ 𝐵 → (((𝐴𝐵) ⊊ 𝐵 ∨ (𝐴𝐵) = 𝐵) → (𝐴𝐵) = 𝐵))
55 olc 865 . . . . . 6 ((𝐴𝐵) = 𝐵 → ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵))
5654, 55syl6 35 . . . . 5 (¬ (𝐴𝐵) ⊊ 𝐵 → (((𝐴𝐵) ⊊ 𝐵 ∨ (𝐴𝐵) = 𝐵) → ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵)))
5753, 56jaoa 953 . . . 4 ((¬ (𝐴𝐵) ⊊ 𝐴 ∨ ¬ (𝐴𝐵) ⊊ 𝐵) → ((((𝐴𝐵) ⊊ 𝐴 ∨ (𝐴𝐵) = 𝐴) ∧ ((𝐴𝐵) ⊊ 𝐵 ∨ (𝐴𝐵) = 𝐵)) → ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵)))
5847, 50, 57mp2ani 695 . . 3 ((¬ (𝐴𝐵) ⊊ 𝐴 ∨ ¬ (𝐴𝐵) ⊊ 𝐵) → ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵))
5945, 58syl 17 . 2 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵))
60 df-ss 3965 . . 3 (𝐴𝐵 ↔ (𝐴𝐵) = 𝐴)
61 sseqin2 4215 . . 3 (𝐵𝐴 ↔ (𝐴𝐵) = 𝐵)
6260, 61orbi12i 912 . 2 ((𝐴𝐵𝐵𝐴) ↔ ((𝐴𝐵) = 𝐴 ∨ (𝐴𝐵) = 𝐵))
6359, 62sylibr 233 1 ((∀𝑥((𝑥𝐴 ∧ Tr 𝑥) → 𝑥𝐴) ∧ ∀𝑦((𝑦𝐵 ∧ Tr 𝑦) → 𝑦𝐵)) → (𝐴𝐵𝐵𝐴))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 395  wo 844  wal 1538   = wceq 1540  wcel 2105  wral 3060  Vcvv 3473  cin 3947  wss 3948  wpss 3949  Tr wtr 5265
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1912  ax-6 1970  ax-7 2010  ax-8 2107  ax-9 2115  ax-10 2136  ax-11 2153  ax-12 2170  ax-ext 2702  ax-sep 5299  ax-nul 5306  ax-pr 5427  ax-un 7729
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 845  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1781  df-nf 1785  df-sb 2067  df-clab 2709  df-cleq 2723  df-clel 2809  df-nfc 2884  df-ne 2940  df-ral 3061  df-rex 3070  df-rab 3432  df-v 3475  df-sbc 3778  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-pw 4604  df-sn 4629  df-pr 4631  df-uni 4909  df-iun 4999  df-tr 5266  df-suc 6370
This theorem is referenced by:  dfon2lem5  35229
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