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Theorem findcard2d 9166
Description: Deduction version of findcard2 9164. (Contributed by SO, 16-Jul-2018.)
Hypotheses
Ref Expression
findcard2d.ch (𝑥 = ∅ → (𝜓𝜒))
findcard2d.th (𝑥 = 𝑦 → (𝜓𝜃))
findcard2d.ta (𝑥 = (𝑦 ∪ {𝑧}) → (𝜓𝜏))
findcard2d.et (𝑥 = 𝐴 → (𝜓𝜂))
findcard2d.z (𝜑𝜒)
findcard2d.i ((𝜑 ∧ (𝑦𝐴𝑧 ∈ (𝐴𝑦))) → (𝜃𝜏))
findcard2d.a (𝜑𝐴 ∈ Fin)
Assertion
Ref Expression
findcard2d (𝜑𝜂)
Distinct variable groups:   𝑥,𝐴,𝑦,𝑧   𝜑,𝑥,𝑦,𝑧   𝜓,𝑦,𝑧   𝜒,𝑥   𝜃,𝑥   𝜏,𝑥   𝜂,𝑥
Allowed substitution hints:   𝜓(𝑥)   𝜒(𝑦,𝑧)   𝜃(𝑦,𝑧)   𝜏(𝑦,𝑧)   𝜂(𝑦,𝑧)

Proof of Theorem findcard2d
StepHypRef Expression
1 ssid 4005 . 2 𝐴𝐴
2 findcard2d.a . . . 4 (𝜑𝐴 ∈ Fin)
32adantr 482 . . 3 ((𝜑𝐴𝐴) → 𝐴 ∈ Fin)
4 sseq1 4008 . . . . . 6 (𝑥 = ∅ → (𝑥𝐴 ↔ ∅ ⊆ 𝐴))
54anbi2d 630 . . . . 5 (𝑥 = ∅ → ((𝜑𝑥𝐴) ↔ (𝜑 ∧ ∅ ⊆ 𝐴)))
6 findcard2d.ch . . . . 5 (𝑥 = ∅ → (𝜓𝜒))
75, 6imbi12d 345 . . . 4 (𝑥 = ∅ → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑 ∧ ∅ ⊆ 𝐴) → 𝜒)))
8 sseq1 4008 . . . . . 6 (𝑥 = 𝑦 → (𝑥𝐴𝑦𝐴))
98anbi2d 630 . . . . 5 (𝑥 = 𝑦 → ((𝜑𝑥𝐴) ↔ (𝜑𝑦𝐴)))
10 findcard2d.th . . . . 5 (𝑥 = 𝑦 → (𝜓𝜃))
119, 10imbi12d 345 . . . 4 (𝑥 = 𝑦 → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑𝑦𝐴) → 𝜃)))
12 sseq1 4008 . . . . . 6 (𝑥 = (𝑦 ∪ {𝑧}) → (𝑥𝐴 ↔ (𝑦 ∪ {𝑧}) ⊆ 𝐴))
1312anbi2d 630 . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → ((𝜑𝑥𝐴) ↔ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)))
14 findcard2d.ta . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → (𝜓𝜏))
1513, 14imbi12d 345 . . . 4 (𝑥 = (𝑦 ∪ {𝑧}) → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴) → 𝜏)))
16 sseq1 4008 . . . . . 6 (𝑥 = 𝐴 → (𝑥𝐴𝐴𝐴))
1716anbi2d 630 . . . . 5 (𝑥 = 𝐴 → ((𝜑𝑥𝐴) ↔ (𝜑𝐴𝐴)))
18 findcard2d.et . . . . 5 (𝑥 = 𝐴 → (𝜓𝜂))
1917, 18imbi12d 345 . . . 4 (𝑥 = 𝐴 → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑𝐴𝐴) → 𝜂)))
20 findcard2d.z . . . . 5 (𝜑𝜒)
2120adantr 482 . . . 4 ((𝜑 ∧ ∅ ⊆ 𝐴) → 𝜒)
22 simprl 770 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝜑)
23 simprr 772 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝑦 ∪ {𝑧}) ⊆ 𝐴)
2423unssad 4188 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑦𝐴)
2522, 24jca 513 . . . . . . 7 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝜑𝑦𝐴))
26 id 22 . . . . . . . . . . 11 ((𝑦 ∪ {𝑧}) ⊆ 𝐴 → (𝑦 ∪ {𝑧}) ⊆ 𝐴)
27 vsnid 4666 . . . . . . . . . . . 12 𝑧 ∈ {𝑧}
28 elun2 4178 . . . . . . . . . . . 12 (𝑧 ∈ {𝑧} → 𝑧 ∈ (𝑦 ∪ {𝑧}))
2927, 28mp1i 13 . . . . . . . . . . 11 ((𝑦 ∪ {𝑧}) ⊆ 𝐴𝑧 ∈ (𝑦 ∪ {𝑧}))
3026, 29sseldd 3984 . . . . . . . . . 10 ((𝑦 ∪ {𝑧}) ⊆ 𝐴𝑧𝐴)
3130ad2antll 728 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑧𝐴)
32 simplr 768 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → ¬ 𝑧𝑦)
3331, 32eldifd 3960 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑧 ∈ (𝐴𝑦))
34 findcard2d.i . . . . . . . 8 ((𝜑 ∧ (𝑦𝐴𝑧 ∈ (𝐴𝑦))) → (𝜃𝜏))
3522, 24, 33, 34syl12anc 836 . . . . . . 7 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝜃𝜏))
3625, 35embantd 59 . . . . . 6 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (((𝜑𝑦𝐴) → 𝜃) → 𝜏))
3736ex 414 . . . . 5 ((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) → ((𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴) → (((𝜑𝑦𝐴) → 𝜃) → 𝜏)))
3837com23 86 . . . 4 ((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) → (((𝜑𝑦𝐴) → 𝜃) → ((𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴) → 𝜏)))
397, 11, 15, 19, 21, 38findcard2s 9165 . . 3 (𝐴 ∈ Fin → ((𝜑𝐴𝐴) → 𝜂))
403, 39mpcom 38 . 2 ((𝜑𝐴𝐴) → 𝜂)
411, 40mpan2 690 1 (𝜑𝜂)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 205  wa 397   = wceq 1542  wcel 2107  cdif 3946  cun 3947  wss 3949  c0 4323  {csn 4629  Fincfn 8939
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-sep 5300  ax-nul 5307  ax-pr 5428  ax-un 7725
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3or 1089  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-ral 3063  df-rex 3072  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3779  df-dif 3952  df-un 3954  df-in 3956  df-ss 3966  df-pss 3968  df-nul 4324  df-if 4530  df-pw 4605  df-sn 4630  df-pr 4632  df-op 4636  df-uni 4910  df-br 5150  df-opab 5212  df-tr 5267  df-id 5575  df-eprel 5581  df-po 5589  df-so 5590  df-fr 5632  df-we 5634  df-xp 5683  df-rel 5684  df-cnv 5685  df-co 5686  df-dm 5687  df-rn 5688  df-res 5689  df-ima 5690  df-ord 6368  df-on 6369  df-lim 6370  df-suc 6371  df-iota 6496  df-fun 6546  df-fn 6547  df-f 6548  df-f1 6549  df-fo 6550  df-f1o 6551  df-fv 6552  df-om 7856  df-en 8940  df-fin 8943
This theorem is referenced by:  fprodmodd  15941  sumeven  16330  sumodd  16331  maducoeval2  22142  madugsum  22145  esum2dlem  33090  fiunelcarsg  33315  carsgclctunlem1  33316  fiiuncl  43752  mpct  43900  fprodexp  44310  fprodabs2  44311  mccl  44314  fprodcn  44316  fprodcncf  44616  dvnprodlem3  44664  sge0iunmptlemfi  45129  hoidmvle  45316
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