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Theorem findcard2d 8243
Description: Deduction version of findcard2 8241. (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 3657 . 2 𝐴𝐴
2 findcard2d.a . . . 4 (𝜑𝐴 ∈ Fin)
32adantr 480 . . 3 ((𝜑𝐴𝐴) → 𝐴 ∈ Fin)
4 sseq1 3659 . . . . . 6 (𝑥 = ∅ → (𝑥𝐴 ↔ ∅ ⊆ 𝐴))
54anbi2d 740 . . . . 5 (𝑥 = ∅ → ((𝜑𝑥𝐴) ↔ (𝜑 ∧ ∅ ⊆ 𝐴)))
6 findcard2d.ch . . . . 5 (𝑥 = ∅ → (𝜓𝜒))
75, 6imbi12d 333 . . . 4 (𝑥 = ∅ → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑 ∧ ∅ ⊆ 𝐴) → 𝜒)))
8 sseq1 3659 . . . . . 6 (𝑥 = 𝑦 → (𝑥𝐴𝑦𝐴))
98anbi2d 740 . . . . 5 (𝑥 = 𝑦 → ((𝜑𝑥𝐴) ↔ (𝜑𝑦𝐴)))
10 findcard2d.th . . . . 5 (𝑥 = 𝑦 → (𝜓𝜃))
119, 10imbi12d 333 . . . 4 (𝑥 = 𝑦 → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑𝑦𝐴) → 𝜃)))
12 sseq1 3659 . . . . . 6 (𝑥 = (𝑦 ∪ {𝑧}) → (𝑥𝐴 ↔ (𝑦 ∪ {𝑧}) ⊆ 𝐴))
1312anbi2d 740 . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → ((𝜑𝑥𝐴) ↔ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)))
14 findcard2d.ta . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → (𝜓𝜏))
1513, 14imbi12d 333 . . . 4 (𝑥 = (𝑦 ∪ {𝑧}) → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴) → 𝜏)))
16 sseq1 3659 . . . . . 6 (𝑥 = 𝐴 → (𝑥𝐴𝐴𝐴))
1716anbi2d 740 . . . . 5 (𝑥 = 𝐴 → ((𝜑𝑥𝐴) ↔ (𝜑𝐴𝐴)))
18 findcard2d.et . . . . 5 (𝑥 = 𝐴 → (𝜓𝜂))
1917, 18imbi12d 333 . . . 4 (𝑥 = 𝐴 → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑𝐴𝐴) → 𝜂)))
20 findcard2d.z . . . . 5 (𝜑𝜒)
2120adantr 480 . . . 4 ((𝜑 ∧ ∅ ⊆ 𝐴) → 𝜒)
22 simprl 809 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝜑)
23 simprr 811 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝑦 ∪ {𝑧}) ⊆ 𝐴)
2423unssad 3823 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑦𝐴)
2522, 24jca 553 . . . . . . 7 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝜑𝑦𝐴))
26 id 22 . . . . . . . . . . 11 ((𝑦 ∪ {𝑧}) ⊆ 𝐴 → (𝑦 ∪ {𝑧}) ⊆ 𝐴)
27 vsnid 4242 . . . . . . . . . . . 12 𝑧 ∈ {𝑧}
28 elun2 3814 . . . . . . . . . . . 12 (𝑧 ∈ {𝑧} → 𝑧 ∈ (𝑦 ∪ {𝑧}))
2927, 28mp1i 13 . . . . . . . . . . 11 ((𝑦 ∪ {𝑧}) ⊆ 𝐴𝑧 ∈ (𝑦 ∪ {𝑧}))
3026, 29sseldd 3637 . . . . . . . . . 10 ((𝑦 ∪ {𝑧}) ⊆ 𝐴𝑧𝐴)
3130ad2antll 765 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑧𝐴)
32 simplr 807 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → ¬ 𝑧𝑦)
3331, 32eldifd 3618 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑧 ∈ (𝐴𝑦))
34 findcard2d.i . . . . . . . 8 ((𝜑 ∧ (𝑦𝐴𝑧 ∈ (𝐴𝑦))) → (𝜃𝜏))
3522, 24, 33, 34syl12anc 1364 . . . . . . 7 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝜃𝜏))
3625, 35embantd 59 . . . . . 6 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (((𝜑𝑦𝐴) → 𝜃) → 𝜏))
3736ex 449 . . . . 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 8242 . . 3 (𝐴 ∈ Fin → ((𝜑𝐴𝐴) → 𝜂))
403, 39mpcom 38 . 2 ((𝜑𝐴𝐴) → 𝜂)
411, 40mpan2 707 1 (𝜑𝜂)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 383   = wceq 1523  wcel 2030  cdif 3604  cun 3605  wss 3607  c0 3948  {csn 4210  Fincfn 7997
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-8 2032  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-pow 4873  ax-pr 4936  ax-un 6991
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  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-ne 2824  df-ral 2946  df-rex 2947  df-rab 2950  df-v 3233  df-sbc 3469  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-uni 4469  df-br 4686  df-opab 4746  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-we 5104  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-ord 5764  df-on 5765  df-lim 5766  df-suc 5767  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-om 7108  df-1o 7605  df-er 7787  df-en 7998  df-fin 8001
This theorem is referenced by:  fprodmodd  14772  sumeven  15157  sumodd  15158  maducoeval2  20494  madugsum  20497  esum2dlem  30282  fiunelcarsg  30506  carsgclctunlem1  30507  fiiuncl  39548  mpct  39707  fprodexp  40144  fprodabs2  40145  mccl  40148  fprodcn  40150  fprodcncf  40432  dvnprodlem3  40481  sge0iunmptlemfi  40948  hoidmvle  41135
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