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Theorem elrn3 36742
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 5669 . . 3 ran 𝐵 = dom ◡𝐵
21eleq2i 2856 . 2 (𝐴 ∈ ran 𝐵 ↔ 𝐴 ∈ dom ◡𝐵)
3 eldm3 36741 . 2 (𝐴 ∈ dom ◡𝐵 ↔ (◡𝐵 ↾ {𝐴}) ≠ ∅)
4 cnvxp 6165 . . . . . . 7 ◡(V × {𝐴}) = ({𝐴} × V)
54ineq2i 4117 . . . . . 6 (◡𝐵 ∩ ◡(V × {𝐴})) = (◡𝐵 ∩ ({𝐴} × V))
6 cnvin 6153 . . . . . 6 ◡(𝐵 ∩ (V × {𝐴})) = (◡𝐵 ∩ ◡(V × {𝐴}))
7 df-res 5670 . . . . . 6 (◡𝐵 ↾ {𝐴}) = (◡𝐵 ∩ ({𝐴} × V))
85, 6, 73eqtr4ri 2797 . . . . 5 (◡𝐵 ↾ {𝐴}) = ◡(𝐵 ∩ (V × {𝐴}))
98eqeq1i 2768 . . . 4 ((◡𝐵 ↾ {𝐴}) = ∅ ↔ ◡(𝐵 ∩ (V × {𝐴})) = ∅)
10 relinxp 5801 . . . . 5 Rel (𝐵 ∩ (V × {𝐴}))
11 cnveq0 6209 . . . . 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 3011 . 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 2147   ≠ wne 2959  Vcvv 3454   ∩ cin 4092  ∅c0 4281  {csn 4588   × cxp 5656  ◡ccnv 5657  dom cdm 5658  ran crn 5659   ↾ cres 5660  Rel wrel 5663
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 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-11 2197  ax-ext 2735  ax-sep 5255  ax-pr 5398
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 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4841  df-br 5109  df-opab 5174  df-xp 5664  df-rel 5665  df-cnv 5666  df-dm 5668  df-rn 5669  df-res 5670
This theorem is used by: (None)
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