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Theorem elpmg 8631
Description: The predicate "is a partial function". (Contributed by Mario Carneiro, 14-Nov-2013.)
Assertion
Ref Expression
elpmg ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (Fun 𝐶𝐶 ⊆ (𝐵 × 𝐴))))

Proof of Theorem elpmg
Dummy variable 𝑔 is distinct from all other variables.
StepHypRef Expression
1 pmvalg 8626 . . . . 5 ((𝐴𝑉𝐵𝑊) → (𝐴pm 𝐵) = {𝑔 ∈ 𝒫 (𝐵 × 𝐴) ∣ Fun 𝑔})
21eleq2d 2824 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ 𝐶 ∈ {𝑔 ∈ 𝒫 (𝐵 × 𝐴) ∣ Fun 𝑔}))
3 funeq 6454 . . . . 5 (𝑔 = 𝐶 → (Fun 𝑔 ↔ Fun 𝐶))
43elrab 3624 . . . 4 (𝐶 ∈ {𝑔 ∈ 𝒫 (𝐵 × 𝐴) ∣ Fun 𝑔} ↔ (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ∧ Fun 𝐶))
52, 4bitrdi 287 . . 3 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ∧ Fun 𝐶)))
65biancomd 464 . 2 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (Fun 𝐶𝐶 ∈ 𝒫 (𝐵 × 𝐴))))
7 elex 3450 . . . . 5 (𝐶 ∈ 𝒫 (𝐵 × 𝐴) → 𝐶 ∈ V)
87a1i 11 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) → 𝐶 ∈ V))
9 xpexg 7600 . . . . . 6 ((𝐵𝑊𝐴𝑉) → (𝐵 × 𝐴) ∈ V)
109ancoms 459 . . . . 5 ((𝐴𝑉𝐵𝑊) → (𝐵 × 𝐴) ∈ V)
11 ssexg 5247 . . . . . 6 ((𝐶 ⊆ (𝐵 × 𝐴) ∧ (𝐵 × 𝐴) ∈ V) → 𝐶 ∈ V)
1211expcom 414 . . . . 5 ((𝐵 × 𝐴) ∈ V → (𝐶 ⊆ (𝐵 × 𝐴) → 𝐶 ∈ V))
1310, 12syl 17 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ⊆ (𝐵 × 𝐴) → 𝐶 ∈ V))
14 elpwg 4536 . . . . 5 (𝐶 ∈ V → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ↔ 𝐶 ⊆ (𝐵 × 𝐴)))
1514a1i 11 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ V → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ↔ 𝐶 ⊆ (𝐵 × 𝐴))))
168, 13, 15pm5.21ndd 381 . . 3 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ↔ 𝐶 ⊆ (𝐵 × 𝐴)))
1716anbi2d 629 . 2 ((𝐴𝑉𝐵𝑊) → ((Fun 𝐶𝐶 ∈ 𝒫 (𝐵 × 𝐴)) ↔ (Fun 𝐶𝐶 ⊆ (𝐵 × 𝐴))))
186, 17bitrd 278 1 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (Fun 𝐶𝐶 ⊆ (𝐵 × 𝐴))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396  wcel 2106  {crab 3068  Vcvv 3432  wss 3887  𝒫 cpw 4533   × cxp 5587  Fun wfun 6427  (class class class)co 7275  pm cpm 8616
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 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-sbc 3717  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-iota 6391  df-fun 6435  df-fv 6441  df-ov 7278  df-oprab 7279  df-mpo 7280  df-pm 8618
This theorem is referenced by:  elpm2g  8632  pmss12g  8657  elpm  8661  pmsspw  8665  lmfss  22447  lmmbr2  24423  iscau2  24441  caussi  24461  causs  24462
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