MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  fmpt2d Structured version   Visualization version   GIF version

Theorem fmpt2d 7152
Description: Domain and codomain of the mapping operation; deduction form. (Contributed by NM, 27-Dec-2014.)
Hypotheses
Ref Expression
fmpt2d.2 ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑉)
fmpt2d.1 (𝜑 → 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵))
fmpt2d.3 ((𝜑 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) ∈ 𝐶)
Assertion
Ref Expression
fmpt2d (𝜑 → 𝐹:𝐴⟶𝐶)
Distinct variable groups:   𝑥,𝐴   𝑦,𝐴   𝑦,𝐶   𝑦,𝐹   𝜑,𝑥   𝜑,𝑦
Allowed substitution hints:   𝐵(𝑥, 𝑦)   𝐶(𝑥)   𝐹(𝑥)   𝑉(𝑥, 𝑦)

Proof of Theorem fmpt2d
StepHypRef Expression
1 fmpt2d.2 . . . . 5 ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑉)
21ralrimiva 3158 . . . 4 (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉)
3 eqid 2763 . . . . 5 (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵)
43fnmpt 6704 . . . 4 (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → (𝑥 ∈ 𝐴 ↦ 𝐵) Fn 𝐴)
52, 4syl 18 . . 3 (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) Fn 𝐴)
6 fmpt2d.1 . . . 4 (𝜑 → 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵))
76fneq1d 6657 . . 3 (𝜑 → (𝐹 Fn 𝐴 ↔ (𝑥 ∈ 𝐴 ↦ 𝐵) Fn 𝐴))
85, 7mpbird 260 . 2 (𝜑 → 𝐹 Fn 𝐴)
9 fmpt2d.3 . . 3 ((𝜑 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) ∈ 𝐶)
109ralrimiva 3158 . 2 (𝜑 → ∀𝑦 ∈ 𝐴 (𝐹‘𝑦) ∈ 𝐶)
11 ffnfv 7146 . 2 (𝐹:𝐴⟶𝐶 ↔ (𝐹 Fn 𝐴 ∧ ∀𝑦 ∈ 𝐴 (𝐹‘𝑦) ∈ 𝐶))
128, 10, 11sylanbrc 595 1 (𝜑 → 𝐹:𝐴⟶𝐶)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2147  ∀wral 3080   ↦ cmpt 5190   Fn wfn 6556  ⟶wf 6557  ‘cfv 6561
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5253  ax-nul 5264  ax-pr 5396
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-br 5107  df-opab 5172  df-mpt 5191  df-id 5551  df-xp 5662  df-rel 5663  df-cnv 5664  df-co 5665  df-dm 5666  df-rn 5667  df-iota 6515  df-fun 6563  df-fn 6564  df-f 6565  df-fv 6569
This theorem is used by:  cantnff  9705  limsupgre  15680  idaf  18270  curfcl  18438  ghmqusnsg  19529  ghmquskerlem3  19533  ghmqusker  19534  mat2pmatf  23079  m2cpmf  23093  pm2mpf  23149  clsf  23399  kgenf  23893  lgamf  27402  vmaf  27479  lgsdchr  27715  mirf  29165  suppovss  33348  selvply1rhmlema  34233  extvfvcl  34251  extvfvalf  34252  omsf  35011  erdszelem6  36141  cdleme50f  41802  dochfN  42616  binomcxplemdvsum  45542
  Copyright terms: Public domain W3C validator