Users' Mathboxes Mathbox for Stefan O'Rear < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  elrfirn Structured version   Visualization version   GIF version

Theorem elrfirn 37784
Description: Elementhood in a set of relative finite intersections of an indexed family of sets. (Contributed by Stefan O'Rear, 22-Feb-2015.)
Assertion
Ref Expression
elrfirn ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → (𝐴 ∈ (fi‘({𝐵} ∪ ran 𝐹)) ↔ ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)𝐴 = (𝐵 𝑦𝑣 (𝐹𝑦))))
Distinct variable groups:   𝑣,𝐴   𝑣,𝐵   𝑣,𝐹,𝑦   𝑣,𝐼   𝑣,𝑉   𝑦,𝑣
Allowed substitution hints:   𝐴(𝑦)   𝐵(𝑦)   𝐼(𝑦)   𝑉(𝑦)

Proof of Theorem elrfirn
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 frn 6193 . . 3 (𝐹:𝐼⟶𝒫 𝐵 → ran 𝐹 ⊆ 𝒫 𝐵)
2 elrfi 37783 . . 3 ((𝐵𝑉 ∧ ran 𝐹 ⊆ 𝒫 𝐵) → (𝐴 ∈ (fi‘({𝐵} ∪ ran 𝐹)) ↔ ∃𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)𝐴 = (𝐵 𝑤)))
31, 2sylan2 580 . 2 ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → (𝐴 ∈ (fi‘({𝐵} ∪ ran 𝐹)) ↔ ∃𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)𝐴 = (𝐵 𝑤)))
4 imassrn 5618 . . . . . 6 (𝐹𝑣) ⊆ ran 𝐹
5 pwexg 4980 . . . . . . . 8 (𝐵𝑉 → 𝒫 𝐵 ∈ V)
6 ssexg 4938 . . . . . . . 8 ((ran 𝐹 ⊆ 𝒫 𝐵 ∧ 𝒫 𝐵 ∈ V) → ran 𝐹 ∈ V)
71, 5, 6syl2anr 584 . . . . . . 7 ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → ran 𝐹 ∈ V)
8 elpw2g 4958 . . . . . . 7 (ran 𝐹 ∈ V → ((𝐹𝑣) ∈ 𝒫 ran 𝐹 ↔ (𝐹𝑣) ⊆ ran 𝐹))
97, 8syl 17 . . . . . 6 ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → ((𝐹𝑣) ∈ 𝒫 ran 𝐹 ↔ (𝐹𝑣) ⊆ ran 𝐹))
104, 9mpbiri 248 . . . . 5 ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → (𝐹𝑣) ∈ 𝒫 ran 𝐹)
1110adantr 466 . . . 4 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → (𝐹𝑣) ∈ 𝒫 ran 𝐹)
12 ffun 6188 . . . . . 6 (𝐹:𝐼⟶𝒫 𝐵 → Fun 𝐹)
1312ad2antlr 706 . . . . 5 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → Fun 𝐹)
14 inss2 3982 . . . . . . 7 (𝒫 𝐼 ∩ Fin) ⊆ Fin
1514sseli 3748 . . . . . 6 (𝑣 ∈ (𝒫 𝐼 ∩ Fin) → 𝑣 ∈ Fin)
1615adantl 467 . . . . 5 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → 𝑣 ∈ Fin)
17 imafi 8415 . . . . 5 ((Fun 𝐹𝑣 ∈ Fin) → (𝐹𝑣) ∈ Fin)
1813, 16, 17syl2anc 573 . . . 4 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → (𝐹𝑣) ∈ Fin)
1911, 18elind 3949 . . 3 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → (𝐹𝑣) ∈ (𝒫 ran 𝐹 ∩ Fin))
20 ffn 6185 . . . . . 6 (𝐹:𝐼⟶𝒫 𝐵𝐹 Fn 𝐼)
2120ad2antlr 706 . . . . 5 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)) → 𝐹 Fn 𝐼)
22 inss1 3981 . . . . . . . 8 (𝒫 ran 𝐹 ∩ Fin) ⊆ 𝒫 ran 𝐹
2322sseli 3748 . . . . . . 7 (𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin) → 𝑤 ∈ 𝒫 ran 𝐹)
2423elpwid 4309 . . . . . 6 (𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin) → 𝑤 ⊆ ran 𝐹)
2524adantl 467 . . . . 5 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)) → 𝑤 ⊆ ran 𝐹)
26 inss2 3982 . . . . . . 7 (𝒫 ran 𝐹 ∩ Fin) ⊆ Fin
2726sseli 3748 . . . . . 6 (𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin) → 𝑤 ∈ Fin)
2827adantl 467 . . . . 5 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)) → 𝑤 ∈ Fin)
29 fipreima 8428 . . . . 5 ((𝐹 Fn 𝐼𝑤 ⊆ ran 𝐹𝑤 ∈ Fin) → ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)(𝐹𝑣) = 𝑤)
3021, 25, 28, 29syl3anc 1476 . . . 4 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)) → ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)(𝐹𝑣) = 𝑤)
31 eqcom 2778 . . . . 5 ((𝐹𝑣) = 𝑤𝑤 = (𝐹𝑣))
3231rexbii 3189 . . . 4 (∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)(𝐹𝑣) = 𝑤 ↔ ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)𝑤 = (𝐹𝑣))
3330, 32sylib 208 . . 3 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)) → ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)𝑤 = (𝐹𝑣))
34 inteq 4614 . . . . . 6 (𝑤 = (𝐹𝑣) → 𝑤 = (𝐹𝑣))
3534ineq2d 3965 . . . . 5 (𝑤 = (𝐹𝑣) → (𝐵 𝑤) = (𝐵 (𝐹𝑣)))
3635eqeq2d 2781 . . . 4 (𝑤 = (𝐹𝑣) → (𝐴 = (𝐵 𝑤) ↔ 𝐴 = (𝐵 (𝐹𝑣))))
3736adantl 467 . . 3 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑤 = (𝐹𝑣)) → (𝐴 = (𝐵 𝑤) ↔ 𝐴 = (𝐵 (𝐹𝑣))))
3819, 33, 37rexxfrd 5009 . 2 ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → (∃𝑤 ∈ (𝒫 ran 𝐹 ∩ Fin)𝐴 = (𝐵 𝑤) ↔ ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)𝐴 = (𝐵 (𝐹𝑣))))
3920ad2antlr 706 . . . . . . 7 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → 𝐹 Fn 𝐼)
40 inss1 3981 . . . . . . . . . 10 (𝒫 𝐼 ∩ Fin) ⊆ 𝒫 𝐼
4140sseli 3748 . . . . . . . . 9 (𝑣 ∈ (𝒫 𝐼 ∩ Fin) → 𝑣 ∈ 𝒫 𝐼)
4241elpwid 4309 . . . . . . . 8 (𝑣 ∈ (𝒫 𝐼 ∩ Fin) → 𝑣𝐼)
4342adantl 467 . . . . . . 7 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → 𝑣𝐼)
44 imaiinfv 37782 . . . . . . 7 ((𝐹 Fn 𝐼𝑣𝐼) → 𝑦𝑣 (𝐹𝑦) = (𝐹𝑣))
4539, 43, 44syl2anc 573 . . . . . 6 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → 𝑦𝑣 (𝐹𝑦) = (𝐹𝑣))
4645eqcomd 2777 . . . . 5 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → (𝐹𝑣) = 𝑦𝑣 (𝐹𝑦))
4746ineq2d 3965 . . . 4 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → (𝐵 (𝐹𝑣)) = (𝐵 𝑦𝑣 (𝐹𝑦)))
4847eqeq2d 2781 . . 3 (((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) ∧ 𝑣 ∈ (𝒫 𝐼 ∩ Fin)) → (𝐴 = (𝐵 (𝐹𝑣)) ↔ 𝐴 = (𝐵 𝑦𝑣 (𝐹𝑦))))
4948rexbidva 3197 . 2 ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → (∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)𝐴 = (𝐵 (𝐹𝑣)) ↔ ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)𝐴 = (𝐵 𝑦𝑣 (𝐹𝑦))))
503, 38, 493bitrd 294 1 ((𝐵𝑉𝐹:𝐼⟶𝒫 𝐵) → (𝐴 ∈ (fi‘({𝐵} ∪ ran 𝐹)) ↔ ∃𝑣 ∈ (𝒫 𝐼 ∩ Fin)𝐴 = (𝐵 𝑦𝑣 (𝐹𝑦))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 382   = wceq 1631  wcel 2145  wrex 3062  Vcvv 3351  cun 3721  cin 3722  wss 3723  𝒫 cpw 4297  {csn 4316   cint 4611   ciin 4655  ran crn 5250  cima 5252  Fun wfun 6025   Fn wfn 6026  wf 6027  cfv 6031  Fincfn 8109  ficfi 8472
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1870  ax-4 1885  ax-5 1991  ax-6 2057  ax-7 2093  ax-8 2147  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-sep 4915  ax-nul 4923  ax-pow 4974  ax-pr 5034  ax-un 7096
This theorem depends on definitions:  df-bi 197  df-an 383  df-or 837  df-3or 1072  df-3an 1073  df-tru 1634  df-ex 1853  df-nf 1858  df-sb 2050  df-eu 2622  df-mo 2623  df-clab 2758  df-cleq 2764  df-clel 2767  df-nfc 2902  df-ne 2944  df-ral 3066  df-rex 3067  df-reu 3068  df-rab 3070  df-v 3353  df-sbc 3588  df-csb 3683  df-dif 3726  df-un 3728  df-in 3730  df-ss 3737  df-pss 3739  df-nul 4064  df-if 4226  df-pw 4299  df-sn 4317  df-pr 4319  df-tp 4321  df-op 4323  df-uni 4575  df-int 4612  df-iun 4656  df-iin 4657  df-br 4787  df-opab 4847  df-mpt 4864  df-tr 4887  df-id 5157  df-eprel 5162  df-po 5170  df-so 5171  df-fr 5208  df-we 5210  df-xp 5255  df-rel 5256  df-cnv 5257  df-co 5258  df-dm 5259  df-rn 5260  df-res 5261  df-ima 5262  df-pred 5823  df-ord 5869  df-on 5870  df-lim 5871  df-suc 5872  df-iota 5994  df-fun 6033  df-fn 6034  df-f 6035  df-f1 6036  df-fo 6037  df-f1o 6038  df-fv 6039  df-ov 6796  df-oprab 6797  df-mpt2 6798  df-om 7213  df-wrecs 7559  df-recs 7621  df-rdg 7659  df-1o 7713  df-oadd 7717  df-er 7896  df-en 8110  df-dom 8111  df-fin 8113  df-fi 8473
This theorem is referenced by:  elrfirn2  37785
  Copyright terms: Public domain W3C validator