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Theorem elrn3 36527
Description: Quantifier-free definition of membership in a range. (Contributed by Scott Fenton, 21-Jan-2017.)
Assertion
Ref Expression
elrn3 (𝐴 ∈ ran 𝐵 ↔ (𝐵 ∩ (V × {𝐴})) ≠ ∅)

Proof of Theorem elrn3
StepHypRef Expression
1 df-rn 5662 . . 3 ran 𝐵 = dom ◡𝐵
21eleq2i 2853 . 2 (𝐴 ∈ ran 𝐵 ↔ 𝐴 ∈ dom ◡𝐵)
3 eldm3 36526 . 2 (𝐴 ∈ dom ◡𝐵 ↔ (◡𝐵 ↾ {𝐴}) ≠ ∅)
4 cnvxp 6147 . . . . . . 7 ◡(V × {𝐴}) = ({𝐴} × V)
54ineq2i 4163 . . . . . 6 (◡𝐵 ∩ ◡(V × {𝐴})) = (◡𝐵 ∩ ({𝐴} × V))
6 cnvin 6135 . . . . . 6 ◡(𝐵 ∩ (V × {𝐴})) = (◡𝐵 ∩ ◡(V × {𝐴}))
7 df-res 5663 . . . . . 6 (◡𝐵 ↾ {𝐴}) = (◡𝐵 ∩ ({𝐴} × V))
85, 6, 73eqtr4ri 2795 . . . . 5 (◡𝐵 ↾ {𝐴}) = ◡(𝐵 ∩ (V × {𝐴}))
98eqeq1i 2766 . . . 4 ((◡𝐵 ↾ {𝐴}) = ∅ ↔ ◡(𝐵 ∩ (V × {𝐴})) = ∅)
10 relinxp 5792 . . . . 5 Rel (𝐵 ∩ (V × {𝐴}))
11 cnveq0 6191 . . . . 5 (Rel (𝐵 ∩ (V × {𝐴})) → ((𝐵 ∩ (V × {𝐴})) = ∅ ↔ ◡(𝐵 ∩ (V × {𝐴})) = ∅))
1210, 11ax-mp 5 . . . 4 ((𝐵 ∩ (V × {𝐴})) = ∅ ↔ ◡(𝐵 ∩ (V × {𝐴})) = ∅)
139, 12bitr4i 281 . . 3 ((◡𝐵 ↾ {𝐴}) = ∅ ↔ (𝐵 ∩ (V × {𝐴})) = ∅)
1413necon3bii 3008 . 2 ((◡𝐵 ↾ {𝐴}) ≠ ∅ ↔ (𝐵 ∩ (V × {𝐴})) ≠ ∅)
152, 3, 143bitri 300 1 (𝐴 ∈ ran 𝐵 ↔ (𝐵 ∩ (V × {𝐴})) ≠ ∅)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ↔ wb 209   = wceq 1570   ∈ wcel 2145   ≠ wne 2956  Vcvv 3451   ∩ cin 3898  ∅c0 4279  {csn 4584   × cxp 5649  ◡ccnv 5650  dom cdm 5651  ran crn 5652   ↾ cres 5653  Rel wrel 5656
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-11 2194  ax-ext 2733  ax-sep 5249  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-sb 2100  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-br 5104  df-opab 5168  df-xp 5657  df-rel 5658  df-cnv 5659  df-dm 5661  df-rn 5662  df-res 5663
This theorem is used by: (None)
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