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Theorem elpreimad 7056
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 7055 . . 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 2145  ◡ccnv 5650   “ cima 5654   Fn wfn 6532  ‘cfv 6537
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 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-nul 5260  ax-pr 5391
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 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-ne 2957  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  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 6493  df-fun 6539  df-fn 6540  df-fv 6545
This theorem is used by:  fpwwe2lem8  10716  rhmpreimaidl  21564  rhmpreimaprmidl  21628  evlslem3  22382  elrgspnsubrunlem2  33802  ply1degltel  34119  ply1degleel  34120  ply1degltlss  34121  exsslsb  34222  ply1degltdimlem  34247  ply1degltdim  34248  dimkerim  34252  lvecendof1f1o  34258  zndvdchrrhm  43003  smfsuplem1  47790
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