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Theorem pmresg 8036
Description: Elementhood of a restricted function in the set of partial functions. (Contributed by Mario Carneiro, 31-Dec-2013.)
Assertion
Ref Expression
pmresg ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → (𝐹𝐵) ∈ (𝐴pm 𝐵))

Proof of Theorem pmresg
StepHypRef Expression
1 n0i 4066 . . . . 5 (𝐹 ∈ (𝐴pm 𝐶) → ¬ (𝐴pm 𝐶) = ∅)
2 fnpm 8016 . . . . . . 7 pm Fn (V × V)
3 fndm 6130 . . . . . . 7 ( ↑pm Fn (V × V) → dom ↑pm = (V × V))
42, 3ax-mp 5 . . . . . 6 dom ↑pm = (V × V)
54ndmov 6964 . . . . 5 (¬ (𝐴 ∈ V ∧ 𝐶 ∈ V) → (𝐴pm 𝐶) = ∅)
61, 5nsyl2 144 . . . 4 (𝐹 ∈ (𝐴pm 𝐶) → (𝐴 ∈ V ∧ 𝐶 ∈ V))
76simpld 476 . . 3 (𝐹 ∈ (𝐴pm 𝐶) → 𝐴 ∈ V)
87adantl 467 . 2 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → 𝐴 ∈ V)
9 simpl 468 . 2 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → 𝐵𝑉)
10 elpmi 8027 . . . . . 6 (𝐹 ∈ (𝐴pm 𝐶) → (𝐹:dom 𝐹𝐴 ∧ dom 𝐹𝐶))
1110simpld 476 . . . . 5 (𝐹 ∈ (𝐴pm 𝐶) → 𝐹:dom 𝐹𝐴)
1211adantl 467 . . . 4 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → 𝐹:dom 𝐹𝐴)
13 inss1 3979 . . . 4 (dom 𝐹𝐵) ⊆ dom 𝐹
14 fssres 6210 . . . 4 ((𝐹:dom 𝐹𝐴 ∧ (dom 𝐹𝐵) ⊆ dom 𝐹) → (𝐹 ↾ (dom 𝐹𝐵)):(dom 𝐹𝐵)⟶𝐴)
1512, 13, 14sylancl 566 . . 3 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → (𝐹 ↾ (dom 𝐹𝐵)):(dom 𝐹𝐵)⟶𝐴)
16 ffun 6188 . . . . 5 (𝐹:dom 𝐹𝐴 → Fun 𝐹)
17 resres 5550 . . . . . 6 ((𝐹 ↾ dom 𝐹) ↾ 𝐵) = (𝐹 ↾ (dom 𝐹𝐵))
18 funrel 6048 . . . . . . 7 (Fun 𝐹 → Rel 𝐹)
19 resdm 5582 . . . . . . 7 (Rel 𝐹 → (𝐹 ↾ dom 𝐹) = 𝐹)
20 reseq1 5528 . . . . . . 7 ((𝐹 ↾ dom 𝐹) = 𝐹 → ((𝐹 ↾ dom 𝐹) ↾ 𝐵) = (𝐹𝐵))
2118, 19, 203syl 18 . . . . . 6 (Fun 𝐹 → ((𝐹 ↾ dom 𝐹) ↾ 𝐵) = (𝐹𝐵))
2217, 21syl5eqr 2818 . . . . 5 (Fun 𝐹 → (𝐹 ↾ (dom 𝐹𝐵)) = (𝐹𝐵))
2312, 16, 223syl 18 . . . 4 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → (𝐹 ↾ (dom 𝐹𝐵)) = (𝐹𝐵))
2423feq1d 6170 . . 3 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → ((𝐹 ↾ (dom 𝐹𝐵)):(dom 𝐹𝐵)⟶𝐴 ↔ (𝐹𝐵):(dom 𝐹𝐵)⟶𝐴))
2515, 24mpbid 222 . 2 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → (𝐹𝐵):(dom 𝐹𝐵)⟶𝐴)
26 inss2 3980 . . 3 (dom 𝐹𝐵) ⊆ 𝐵
27 elpm2r 8026 . . 3 (((𝐴 ∈ V ∧ 𝐵𝑉) ∧ ((𝐹𝐵):(dom 𝐹𝐵)⟶𝐴 ∧ (dom 𝐹𝐵) ⊆ 𝐵)) → (𝐹𝐵) ∈ (𝐴pm 𝐵))
2826, 27mpanr2 676 . 2 (((𝐴 ∈ V ∧ 𝐵𝑉) ∧ (𝐹𝐵):(dom 𝐹𝐵)⟶𝐴) → (𝐹𝐵) ∈ (𝐴pm 𝐵))
298, 9, 25, 28syl21anc 1474 1 ((𝐵𝑉𝐹 ∈ (𝐴pm 𝐶)) → (𝐹𝐵) ∈ (𝐴pm 𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 382   = wceq 1630  wcel 2144  Vcvv 3349  cin 3720  wss 3721  c0 4061   × cxp 5247  dom cdm 5249  cres 5251  Rel wrel 5254  Fun wfun 6025   Fn wfn 6026  wf 6027  (class class class)co 6792  pm cpm 8009
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1869  ax-4 1884  ax-5 1990  ax-6 2056  ax-7 2092  ax-8 2146  ax-9 2153  ax-10 2173  ax-11 2189  ax-12 2202  ax-13 2407  ax-ext 2750  ax-sep 4912  ax-nul 4920  ax-pow 4971  ax-pr 5034  ax-un 7095
This theorem depends on definitions:  df-bi 197  df-an 383  df-or 827  df-3an 1072  df-tru 1633  df-ex 1852  df-nf 1857  df-sb 2049  df-eu 2621  df-mo 2622  df-clab 2757  df-cleq 2763  df-clel 2766  df-nfc 2901  df-ne 2943  df-ral 3065  df-rex 3066  df-rab 3069  df-v 3351  df-sbc 3586  df-csb 3681  df-dif 3724  df-un 3726  df-in 3728  df-ss 3735  df-nul 4062  df-if 4224  df-pw 4297  df-sn 4315  df-pr 4317  df-op 4321  df-uni 4573  df-iun 4654  df-br 4785  df-opab 4845  df-mpt 4862  df-id 5157  df-xp 5255  df-rel 5256  df-cnv 5257  df-co 5258  df-dm 5259  df-rn 5260  df-res 5261  df-ima 5262  df-iota 5994  df-fun 6033  df-fn 6034  df-f 6035  df-fv 6039  df-ov 6795  df-oprab 6796  df-mpt2 6797  df-1st 7314  df-2nd 7315  df-pm 8011
This theorem is referenced by:  lmres  21324  mbfres  23630  dvnres  23913  cpnres  23919  caures  33881
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