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Theorem elpmg 8041
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 8036 . . . . 5 ((𝐴𝑉𝐵𝑊) → (𝐴pm 𝐵) = {𝑔 ∈ 𝒫 (𝐵 × 𝐴) ∣ Fun 𝑔})
21eleq2d 2825 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ 𝐶 ∈ {𝑔 ∈ 𝒫 (𝐵 × 𝐴) ∣ Fun 𝑔}))
3 funeq 6069 . . . . 5 (𝑔 = 𝐶 → (Fun 𝑔 ↔ Fun 𝐶))
43elrab 3504 . . . 4 (𝐶 ∈ {𝑔 ∈ 𝒫 (𝐵 × 𝐴) ∣ Fun 𝑔} ↔ (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ∧ Fun 𝐶))
52, 4syl6bb 276 . . 3 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ∧ Fun 𝐶)))
6 ancom 465 . . 3 ((𝐶 ∈ 𝒫 (𝐵 × 𝐴) ∧ Fun 𝐶) ↔ (Fun 𝐶𝐶 ∈ 𝒫 (𝐵 × 𝐴)))
75, 6syl6bb 276 . 2 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (Fun 𝐶𝐶 ∈ 𝒫 (𝐵 × 𝐴))))
8 elex 3352 . . . . 5 (𝐶 ∈ 𝒫 (𝐵 × 𝐴) → 𝐶 ∈ V)
98a1i 11 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) → 𝐶 ∈ V))
10 xpexg 7126 . . . . . 6 ((𝐵𝑊𝐴𝑉) → (𝐵 × 𝐴) ∈ V)
1110ancoms 468 . . . . 5 ((𝐴𝑉𝐵𝑊) → (𝐵 × 𝐴) ∈ V)
12 ssexg 4956 . . . . . 6 ((𝐶 ⊆ (𝐵 × 𝐴) ∧ (𝐵 × 𝐴) ∈ V) → 𝐶 ∈ V)
1312expcom 450 . . . . 5 ((𝐵 × 𝐴) ∈ V → (𝐶 ⊆ (𝐵 × 𝐴) → 𝐶 ∈ V))
1411, 13syl 17 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ⊆ (𝐵 × 𝐴) → 𝐶 ∈ V))
15 elpwg 4310 . . . . 5 (𝐶 ∈ V → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ↔ 𝐶 ⊆ (𝐵 × 𝐴)))
1615a1i 11 . . . 4 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ V → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ↔ 𝐶 ⊆ (𝐵 × 𝐴))))
179, 14, 16pm5.21ndd 368 . . 3 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ 𝒫 (𝐵 × 𝐴) ↔ 𝐶 ⊆ (𝐵 × 𝐴)))
1817anbi2d 742 . 2 ((𝐴𝑉𝐵𝑊) → ((Fun 𝐶𝐶 ∈ 𝒫 (𝐵 × 𝐴)) ↔ (Fun 𝐶𝐶 ⊆ (𝐵 × 𝐴))))
197, 18bitrd 268 1 ((𝐴𝑉𝐵𝑊) → (𝐶 ∈ (𝐴pm 𝐵) ↔ (Fun 𝐶𝐶 ⊆ (𝐵 × 𝐴))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 383  wcel 2139  {crab 3054  Vcvv 3340  wss 3715  𝒫 cpw 4302   × cxp 5264  Fun wfun 6043  (class class class)co 6814  pm cpm 8026
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7115
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ral 3055  df-rex 3056  df-rab 3059  df-v 3342  df-sbc 3577  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-op 4328  df-uni 4589  df-br 4805  df-opab 4865  df-id 5174  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-iota 6012  df-fun 6051  df-fv 6057  df-ov 6817  df-oprab 6818  df-mpt2 6819  df-pm 8028
This theorem is referenced by:  elpm2g  8042  pmss12g  8052  elpm  8056  pmsspw  8060  lmfss  21322  lmmbr2  23277  iscau2  23295  caussi  23315  causs  23316
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