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Theorem elpmg 8589
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 8584 . . . . 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 6438 . . . . 5 (𝑔 = 𝐶 → (Fun 𝑔 ↔ Fun 𝐶))
43elrab 3617 . . . 4 (𝐶 ∈ {𝑔 ∈ 𝒫 (𝐵 × 𝐴) ∣ Fun 𝑔} ↔ (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ∧ Fun 𝐶))
52, 4bitrdi 286 . . 3 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ∧ Fun 𝐶)))
65biancomd 463 . 2 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (Fun 𝐶𝐶 ∈ 𝒫 (𝐵 × 𝐴))))
7 elex 3440 . . . . 5 (𝐶 ∈ 𝒫 (𝐵 × 𝐴) → 𝐶 ∈ V)
87a1i 11 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) → 𝐶 ∈ V))
9 xpexg 7578 . . . . . 6 ((𝐵𝑊𝐴𝑉) → (𝐵 × 𝐴) ∈ V)
109ancoms 458 . . . . 5 ((𝐴𝑉𝐵𝑊) → (𝐵 × 𝐴) ∈ V)
11 ssexg 5242 . . . . . 6 ((𝐶 ⊆ (𝐵 × 𝐴) ∧ (𝐵 × 𝐴) ∈ V) → 𝐶 ∈ V)
1211expcom 413 . . . . 5 ((𝐵 × 𝐴) ∈ V → (𝐶 ⊆ (𝐵 × 𝐴) → 𝐶 ∈ V))
1310, 12syl 17 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ⊆ (𝐵 × 𝐴) → 𝐶 ∈ V))
14 elpwg 4533 . . . . 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 380 . . 3 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ↔ 𝐶 ⊆ (𝐵 × 𝐴)))
1716anbi2d 628 . 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 395  wcel 2108  {crab 3067  Vcvv 3422  wss 3883  𝒫 cpw 4530   × cxp 5578  Fun wfun 6412  (class class class)co 7255  pm cpm 8574
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-sbc 3712  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-br 5071  df-opab 5133  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-iota 6376  df-fun 6420  df-fv 6426  df-ov 7258  df-oprab 7259  df-mpo 7260  df-pm 8576
This theorem is referenced by:  elpm2g  8590  pmss12g  8615  elpm  8619  pmsspw  8623  lmfss  22355  lmmbr2  24328  iscau2  24346  caussi  24366  causs  24367
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