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Theorem elpreimad 7063
Description: Membership in the preimage of a set under a function. (Contributed by Glauco Siliprandi, 23-Oct-2021.)
Hypotheses
Ref Expression
elpreimad.f (𝜑 → 𝐹 Fn 𝐴)
elpreimad.b (𝜑 → 𝐵 ∈ 𝐴)
elpreimad.c (𝜑 → (𝐹‘𝐵) ∈ 𝐶)
Assertion
Ref Expression
elpreimad (𝜑 → 𝐵 ∈ (◡𝐹 “ 𝐶))

Proof of Theorem elpreimad
StepHypRef Expression
1 elpreimad.b . 2 (𝜑 → 𝐵 ∈ 𝐴)
2 elpreimad.c . 2 (𝜑 → (𝐹‘𝐵) ∈ 𝐶)
3 elpreimad.f . . 3 (𝜑 → 𝐹 Fn 𝐴)
4 elpreima 7062 . . 3 (𝐹 Fn 𝐴 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶)))
53, 4syl 18 . 2 (𝜑 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶)))
61, 2, 5mpbir2and 726 1 (𝜑 → 𝐵 ∈ (◡𝐹 “ 𝐶))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∈ wcel 2144  ◡ccnv 5650   “ cima 5654   Fn wfn 6538  ‘cfv 6543
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-12 2212  ax-ext 2732  ax-sep 5248  ax-nul 5259  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-ne 2956  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-ss 3897  df-dif 4046  df-in 4090  df-un 4150  df-nul 4278  df-if 4482  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-br 5103  df-opab 5167  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-iota 6497  df-fun 6545  df-fn 6546  df-fv 6551
This theorem is used by:  fpwwe2lem8  10730  rhmpreimaidl  21580  rhmpreimaprmidl  21644  evlslem3  22398  elrgspnsubrunlem2  33859  ply1degltel  34176  ply1degleel  34177  ply1degltlss  34178  exsslsb  34279  ply1degltdimlem  34304  ply1degltdim  34305  dimkerim  34309  lvecendof1f1o  34315  zndvdchrrhm  43160  smfsuplem1  47957
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