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Theorem elpreimad 7052
Description: Membership in the preimage of a set under a function. (Contributed by Glauco Siliprandi, 23-Oct-2021.)
Hypotheses
Ref Expression
elpreimad.f (𝜑𝐹 Fn 𝐴)
elpreimad.b (𝜑𝐵𝐴)
elpreimad.c (𝜑 → (𝐹𝐵) ∈ 𝐶)
Assertion
Ref Expression
elpreimad (𝜑𝐵 ∈ (𝐹𝐶))

Proof of Theorem elpreimad
StepHypRef Expression
1 elpreimad.b . 2 (𝜑𝐵𝐴)
2 elpreimad.c . 2 (𝜑 → (𝐹𝐵) ∈ 𝐶)
3 elpreimad.f . . 3 (𝜑𝐹 Fn 𝐴)
4 elpreima 7051 . . 3 (𝐹 Fn 𝐴 → (𝐵 ∈ (𝐹𝐶) ↔ (𝐵𝐴 ∧ (𝐹𝐵) ∈ 𝐶)))
53, 4syl 18 . 2 (𝜑 → (𝐵 ∈ (𝐹𝐶) ↔ (𝐵𝐴 ∧ (𝐹𝐵) ∈ 𝐶)))
61, 2, 5mpbir2and 725 1 (𝜑𝐵 ∈ (𝐹𝐶))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 400  wcel 2149  ccnv 5658  cima 5662   Fn wfn 6529  cfv 6534
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-12 2219  ax-ext 2741  ax-sep 5258  ax-nul 5268  ax-pr 5402
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-br 5111  df-opab 5175  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-iota 6490  df-fun 6536  df-fn 6537  df-fv 6542
This theorem is referenced by:  fpwwe2lem8  10619  rhmpreimaidl  21383  rhmpreimaprmidl  21444  evlslem3  22196  elrgspnsubrunlem2  33505  ply1degltel  33825  ply1degleel  33826  ply1degltlss  33827  exsslsb  33928  ply1degltdimlem  33953  ply1degltdim  33954  dimkerim  33958  lvecendof1f1o  33964  zndvdchrrhm  42625  smfsuplem1  47412
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