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Theorem sbthlem9 8119
Description: Lemma for sbth 8121. (Contributed by NM, 28-Mar-1998.)
Hypotheses
Ref Expression
sbthlem.1 𝐴 ∈ V
sbthlem.2 𝐷 = {𝑥 ∣ (𝑥𝐴 ∧ (𝑔 “ (𝐵 ∖ (𝑓𝑥))) ⊆ (𝐴𝑥))}
sbthlem.3 𝐻 = ((𝑓 𝐷) ∪ (𝑔 ↾ (𝐴 𝐷)))
Assertion
Ref Expression
sbthlem9 ((𝑓:𝐴1-1𝐵𝑔:𝐵1-1𝐴) → 𝐻:𝐴1-1-onto𝐵)
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵   𝑥,𝐷   𝑥,𝑓   𝑥,𝑔   𝑥,𝐻
Allowed substitution hints:   𝐴(𝑓,𝑔)   𝐵(𝑓,𝑔)   𝐷(𝑓,𝑔)   𝐻(𝑓,𝑔)

Proof of Theorem sbthlem9
StepHypRef Expression
1 sbthlem.1 . . . . . . . 8 𝐴 ∈ V
2 sbthlem.2 . . . . . . . 8 𝐷 = {𝑥 ∣ (𝑥𝐴 ∧ (𝑔 “ (𝐵 ∖ (𝑓𝑥))) ⊆ (𝐴𝑥))}
3 sbthlem.3 . . . . . . . 8 𝐻 = ((𝑓 𝐷) ∪ (𝑔 ↾ (𝐴 𝐷)))
41, 2, 3sbthlem7 8117 . . . . . . 7 ((Fun 𝑓 ∧ Fun 𝑔) → Fun 𝐻)
51, 2, 3sbthlem5 8115 . . . . . . . 8 ((dom 𝑓 = 𝐴 ∧ ran 𝑔𝐴) → dom 𝐻 = 𝐴)
65adantrl 752 . . . . . . 7 ((dom 𝑓 = 𝐴 ∧ ((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴)) → dom 𝐻 = 𝐴)
74, 6anim12i 589 . . . . . 6 (((Fun 𝑓 ∧ Fun 𝑔) ∧ (dom 𝑓 = 𝐴 ∧ ((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴))) → (Fun 𝐻 ∧ dom 𝐻 = 𝐴))
87an42s 887 . . . . 5 (((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → (Fun 𝐻 ∧ dom 𝐻 = 𝐴))
98adantlr 751 . . . 4 ((((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → (Fun 𝐻 ∧ dom 𝐻 = 𝐴))
109adantlr 751 . . 3 (((((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ Fun 𝑓) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → (Fun 𝐻 ∧ dom 𝐻 = 𝐴))
111, 2, 3sbthlem8 8118 . . . 4 ((Fun 𝑓 ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → Fun 𝐻)
1211adantll 750 . . 3 (((((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ Fun 𝑓) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → Fun 𝐻)
13 simpr 476 . . . . . . 7 ((Fun 𝑔 ∧ dom 𝑔 = 𝐵) → dom 𝑔 = 𝐵)
1413anim1i 591 . . . . . 6 (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) → (dom 𝑔 = 𝐵 ∧ ran 𝑔𝐴))
15 df-rn 5154 . . . . . . 7 ran 𝐻 = dom 𝐻
161, 2, 3sbthlem6 8116 . . . . . . 7 ((ran 𝑓𝐵 ∧ ((dom 𝑔 = 𝐵 ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → ran 𝐻 = 𝐵)
1715, 16syl5eqr 2699 . . . . . 6 ((ran 𝑓𝐵 ∧ ((dom 𝑔 = 𝐵 ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → dom 𝐻 = 𝐵)
1814, 17sylanr1 685 . . . . 5 ((ran 𝑓𝐵 ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → dom 𝐻 = 𝐵)
1918adantll 750 . . . 4 ((((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → dom 𝐻 = 𝐵)
2019adantlr 751 . . 3 (((((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ Fun 𝑓) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → dom 𝐻 = 𝐵)
2110, 12, 20jca32 557 . 2 (((((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ Fun 𝑓) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)) → ((Fun 𝐻 ∧ dom 𝐻 = 𝐴) ∧ (Fun 𝐻 ∧ dom 𝐻 = 𝐵)))
22 df-f1 5931 . . . 4 (𝑓:𝐴1-1𝐵 ↔ (𝑓:𝐴𝐵 ∧ Fun 𝑓))
23 df-f 5930 . . . . . 6 (𝑓:𝐴𝐵 ↔ (𝑓 Fn 𝐴 ∧ ran 𝑓𝐵))
24 df-fn 5929 . . . . . . 7 (𝑓 Fn 𝐴 ↔ (Fun 𝑓 ∧ dom 𝑓 = 𝐴))
2524anbi1i 731 . . . . . 6 ((𝑓 Fn 𝐴 ∧ ran 𝑓𝐵) ↔ ((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵))
2623, 25bitri 264 . . . . 5 (𝑓:𝐴𝐵 ↔ ((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵))
2726anbi1i 731 . . . 4 ((𝑓:𝐴𝐵 ∧ Fun 𝑓) ↔ (((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ Fun 𝑓))
2822, 27bitri 264 . . 3 (𝑓:𝐴1-1𝐵 ↔ (((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ Fun 𝑓))
29 df-f1 5931 . . . 4 (𝑔:𝐵1-1𝐴 ↔ (𝑔:𝐵𝐴 ∧ Fun 𝑔))
30 df-f 5930 . . . . . 6 (𝑔:𝐵𝐴 ↔ (𝑔 Fn 𝐵 ∧ ran 𝑔𝐴))
31 df-fn 5929 . . . . . . 7 (𝑔 Fn 𝐵 ↔ (Fun 𝑔 ∧ dom 𝑔 = 𝐵))
3231anbi1i 731 . . . . . 6 ((𝑔 Fn 𝐵 ∧ ran 𝑔𝐴) ↔ ((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴))
3330, 32bitri 264 . . . . 5 (𝑔:𝐵𝐴 ↔ ((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴))
3433anbi1i 731 . . . 4 ((𝑔:𝐵𝐴 ∧ Fun 𝑔) ↔ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔))
3529, 34bitri 264 . . 3 (𝑔:𝐵1-1𝐴 ↔ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔))
3628, 35anbi12i 733 . 2 ((𝑓:𝐴1-1𝐵𝑔:𝐵1-1𝐴) ↔ ((((Fun 𝑓 ∧ dom 𝑓 = 𝐴) ∧ ran 𝑓𝐵) ∧ Fun 𝑓) ∧ (((Fun 𝑔 ∧ dom 𝑔 = 𝐵) ∧ ran 𝑔𝐴) ∧ Fun 𝑔)))
37 dff1o4 6183 . . 3 (𝐻:𝐴1-1-onto𝐵 ↔ (𝐻 Fn 𝐴𝐻 Fn 𝐵))
38 df-fn 5929 . . . 4 (𝐻 Fn 𝐴 ↔ (Fun 𝐻 ∧ dom 𝐻 = 𝐴))
39 df-fn 5929 . . . 4 (𝐻 Fn 𝐵 ↔ (Fun 𝐻 ∧ dom 𝐻 = 𝐵))
4038, 39anbi12i 733 . . 3 ((𝐻 Fn 𝐴𝐻 Fn 𝐵) ↔ ((Fun 𝐻 ∧ dom 𝐻 = 𝐴) ∧ (Fun 𝐻 ∧ dom 𝐻 = 𝐵)))
4137, 40bitri 264 . 2 (𝐻:𝐴1-1-onto𝐵 ↔ ((Fun 𝐻 ∧ dom 𝐻 = 𝐴) ∧ (Fun 𝐻 ∧ dom 𝐻 = 𝐵)))
4221, 36, 413imtr4i 281 1 ((𝑓:𝐴1-1𝐵𝑔:𝐵1-1𝐴) → 𝐻:𝐴1-1-onto𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383   = wceq 1523  wcel 2030  {cab 2637  Vcvv 3231  cdif 3604  cun 3605  wss 3607   cuni 4468  ccnv 5142  dom cdm 5143  ran crn 5144  cres 5145  cima 5146  Fun wfun 5920   Fn wfn 5921  wf 5922  1-1wf1 5923  1-1-ontowf1o 5925
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-sep 4814  ax-nul 4822  ax-pr 4936
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ral 2946  df-rex 2947  df-rab 2950  df-v 3233  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-nul 3949  df-if 4120  df-sn 4211  df-pr 4213  df-op 4217  df-uni 4469  df-br 4686  df-opab 4746  df-id 5053  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933
This theorem is referenced by:  sbthlem10  8120
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