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Theorem findcard2d 8442
Description: Deduction version of findcard2 8440. (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 3817 . 2 𝐴𝐴
2 findcard2d.a . . . 4 (𝜑𝐴 ∈ Fin)
32adantr 473 . . 3 ((𝜑𝐴𝐴) → 𝐴 ∈ Fin)
4 sseq1 3820 . . . . . 6 (𝑥 = ∅ → (𝑥𝐴 ↔ ∅ ⊆ 𝐴))
54anbi2d 623 . . . . 5 (𝑥 = ∅ → ((𝜑𝑥𝐴) ↔ (𝜑 ∧ ∅ ⊆ 𝐴)))
6 findcard2d.ch . . . . 5 (𝑥 = ∅ → (𝜓𝜒))
75, 6imbi12d 336 . . . 4 (𝑥 = ∅ → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑 ∧ ∅ ⊆ 𝐴) → 𝜒)))
8 sseq1 3820 . . . . . 6 (𝑥 = 𝑦 → (𝑥𝐴𝑦𝐴))
98anbi2d 623 . . . . 5 (𝑥 = 𝑦 → ((𝜑𝑥𝐴) ↔ (𝜑𝑦𝐴)))
10 findcard2d.th . . . . 5 (𝑥 = 𝑦 → (𝜓𝜃))
119, 10imbi12d 336 . . . 4 (𝑥 = 𝑦 → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑𝑦𝐴) → 𝜃)))
12 sseq1 3820 . . . . . 6 (𝑥 = (𝑦 ∪ {𝑧}) → (𝑥𝐴 ↔ (𝑦 ∪ {𝑧}) ⊆ 𝐴))
1312anbi2d 623 . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → ((𝜑𝑥𝐴) ↔ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)))
14 findcard2d.ta . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → (𝜓𝜏))
1513, 14imbi12d 336 . . . 4 (𝑥 = (𝑦 ∪ {𝑧}) → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴) → 𝜏)))
16 sseq1 3820 . . . . . 6 (𝑥 = 𝐴 → (𝑥𝐴𝐴𝐴))
1716anbi2d 623 . . . . 5 (𝑥 = 𝐴 → ((𝜑𝑥𝐴) ↔ (𝜑𝐴𝐴)))
18 findcard2d.et . . . . 5 (𝑥 = 𝐴 → (𝜓𝜂))
1917, 18imbi12d 336 . . . 4 (𝑥 = 𝐴 → (((𝜑𝑥𝐴) → 𝜓) ↔ ((𝜑𝐴𝐴) → 𝜂)))
20 findcard2d.z . . . . 5 (𝜑𝜒)
2120adantr 473 . . . 4 ((𝜑 ∧ ∅ ⊆ 𝐴) → 𝜒)
22 simprl 788 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝜑)
23 simprr 790 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝑦 ∪ {𝑧}) ⊆ 𝐴)
2423unssad 3986 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑦𝐴)
2522, 24jca 508 . . . . . . 7 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝜑𝑦𝐴))
26 id 22 . . . . . . . . . . 11 ((𝑦 ∪ {𝑧}) ⊆ 𝐴 → (𝑦 ∪ {𝑧}) ⊆ 𝐴)
27 vsnid 4399 . . . . . . . . . . . 12 𝑧 ∈ {𝑧}
28 elun2 3977 . . . . . . . . . . . 12 (𝑧 ∈ {𝑧} → 𝑧 ∈ (𝑦 ∪ {𝑧}))
2927, 28mp1i 13 . . . . . . . . . . 11 ((𝑦 ∪ {𝑧}) ⊆ 𝐴𝑧 ∈ (𝑦 ∪ {𝑧}))
3026, 29sseldd 3797 . . . . . . . . . 10 ((𝑦 ∪ {𝑧}) ⊆ 𝐴𝑧𝐴)
3130ad2antll 721 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑧𝐴)
32 simplr 786 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → ¬ 𝑧𝑦)
3331, 32eldifd 3778 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → 𝑧 ∈ (𝐴𝑦))
34 findcard2d.i . . . . . . . 8 ((𝜑 ∧ (𝑦𝐴𝑧 ∈ (𝐴𝑦))) → (𝜃𝜏))
3522, 24, 33, 34syl12anc 866 . . . . . . 7 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (𝜃𝜏))
3625, 35embantd 59 . . . . . 6 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (𝜑 ∧ (𝑦 ∪ {𝑧}) ⊆ 𝐴)) → (((𝜑𝑦𝐴) → 𝜃) → 𝜏))
3736ex 402 . . . . 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 8441 . . 3 (𝐴 ∈ Fin → ((𝜑𝐴𝐴) → 𝜂))
403, 39mpcom 38 . 2 ((𝜑𝐴𝐴) → 𝜂)
411, 40mpan2 683 1 (𝜑𝜂)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 198  wa 385   = wceq 1653  wcel 2157  cdif 3764  cun 3765  wss 3767  c0 4113  {csn 4366  Fincfn 8193
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1891  ax-4 1905  ax-5 2006  ax-6 2072  ax-7 2107  ax-8 2159  ax-9 2166  ax-10 2185  ax-11 2200  ax-12 2213  ax-13 2354  ax-ext 2775  ax-sep 4973  ax-nul 4981  ax-pow 5033  ax-pr 5095  ax-un 7181
This theorem depends on definitions:  df-bi 199  df-an 386  df-or 875  df-3or 1109  df-3an 1110  df-tru 1657  df-ex 1876  df-nf 1880  df-sb 2065  df-mo 2590  df-eu 2607  df-clab 2784  df-cleq 2790  df-clel 2793  df-nfc 2928  df-ne 2970  df-ral 3092  df-rex 3093  df-rab 3096  df-v 3385  df-sbc 3632  df-dif 3770  df-un 3772  df-in 3774  df-ss 3781  df-pss 3783  df-nul 4114  df-if 4276  df-pw 4349  df-sn 4367  df-pr 4369  df-tp 4371  df-op 4373  df-uni 4627  df-br 4842  df-opab 4904  df-tr 4944  df-id 5218  df-eprel 5223  df-po 5231  df-so 5232  df-fr 5269  df-we 5271  df-xp 5316  df-rel 5317  df-cnv 5318  df-co 5319  df-dm 5320  df-rn 5321  df-res 5322  df-ima 5323  df-ord 5942  df-on 5943  df-lim 5944  df-suc 5945  df-iota 6062  df-fun 6101  df-fn 6102  df-f 6103  df-f1 6104  df-fo 6105  df-f1o 6106  df-fv 6107  df-om 7298  df-1o 7797  df-er 7980  df-en 8194  df-fin 8197
This theorem is referenced by:  fprodmodd  15061  sumeven  15443  sumodd  15444  maducoeval2  20769  madugsum  20772  esum2dlem  30662  fiunelcarsg  30886  carsgclctunlem1  30887  fiiuncl  39981  mpct  40133  fprodexp  40558  fprodabs2  40559  mccl  40562  fprodcn  40564  fprodcncf  40846  dvnprodlem3  40895  sge0iunmptlemfi  41361  hoidmvle  41548
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