Theorem elpreimad 6831

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

Step	Hyp	Ref	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 6830	. . 3 ⊢ (𝐹 Fn 𝐴 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶)))
5	3, 4	syl 17	. 2 ⊢ (𝜑 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶)))
6	1, 2, 5	mpbir2and 711	1 ⊢ (𝜑 → 𝐵 ∈ (◡𝐹 “ 𝐶))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   ∈ wcel 2114  ^◡ccnv 5556   “ cima 5560   Fn wfn 6352  ‘cfv 6357

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pr 5332

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-opab 5131  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-iota 6316  df-fun 6359  df-fn 6360  df-fv 6365

This theorem is referenced by:  evlslem3  20295  dimkerim  31025  smfsuplem1  43092