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

Theorem csbfv 6958
Description: Substitution for a function value. (Contributed by NM, 1-Jan-2006.) (Revised by NM, 20-Aug-2018.)
Assertion
Ref Expression
csbfv ⦋𝐴 / 𝑥⦌(𝐹‘𝑥) = (𝐹‘𝐴)
Distinct variable group:   𝑥,𝐹
Allowed substitution hint:   𝐴(𝑥)

Proof of Theorem csbfv
StepHypRef Expression
1 csbfv2g 6957 . . 3 (𝐴 ∈ V → ⦋𝐴 / 𝑥⦌(𝐹‘𝑥) = (𝐹‘⦋𝐴 / 𝑥⦌𝑥))
2 csbvarg 4395 . . . 4 (𝐴 ∈ V → ⦋𝐴 / 𝑥⦌𝑥 = 𝐴)
32fveq2d 6915 . . 3 (𝐴 ∈ V → (𝐹‘⦋𝐴 / 𝑥⦌𝑥) = (𝐹‘𝐴))
41, 3eqtrd 2798 . 2 (𝐴 ∈ V → ⦋𝐴 / 𝑥⦌(𝐹‘𝑥) = (𝐹‘𝐴))
5 csbprc 4370 . . 3 (¬ 𝐴 ∈ V → ⦋𝐴 / 𝑥⦌(𝐹‘𝑥) = ∅)
6 fvprc 6903 . . 3 (¬ 𝐴 ∈ V → (𝐹‘𝐴) = ∅)
75, 6eqtr4d 2801 . 2 (¬ 𝐴 ∈ V → ⦋𝐴 / 𝑥⦌(𝐹‘𝑥) = (𝐹‘𝐴))
84, 7pm2.61i 184 1 ⦋𝐴 / 𝑥⦌(𝐹‘𝑥) = (𝐹‘𝐴)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  ¬ wn 3   = wceq 1570   ∈ wcel 2147  Vcvv 3454  ⦋csb 3851  ∅c0 4281  ‘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-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-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  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-dm 5666  df-iota 6515  df-fv 6569
This theorem is used by:  mptcoe1fsupp  22566  mptcoe1matfsupp  23153  mp2pm2mplem4  23160  chfacfscmulfsupp  23210  chfacfpmmulfsupp  23214  cpmidpmatlem3  23223  cayhamlem4  23239  cayleyhamilton1  23243  logbmpt  27149  nbgrcl  29949  nbgrnvtx0  29953  iuninc  33230  disjxpin  33257  finixpnum  38733  cdlemkid3N  42193  cdlemkid4  42194  cdlemk39s  42199  mccllem  46824  clnbgrcl  49134  clnbgrnvtx0  49140  veroquadmodzerod  51296
  Copyright terms: Public domain W3C validator