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Theorem elrn3 36651
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 2852 . 2 (𝐴 ∈ ran 𝐵 ↔ 𝐴 ∈ dom ◡𝐵)
3 eldm3 36650 . 2 (𝐴 ∈ dom ◡𝐵 ↔ (◡𝐵 ↾ {𝐴}) ≠ ∅)
4 cnvxp 6149 . . . . . . 7 ◡(V × {𝐴}) = ({𝐴} × V)
54ineq2i 4113 . . . . . 6 (◡𝐵 ∩ ◡(V × {𝐴})) = (◡𝐵 ∩ ({𝐴} × V))
6 cnvin 6137 . . . . . 6 ◡(𝐵 ∩ (V × {𝐴})) = (◡𝐵 ∩ ◡(V × {𝐴}))
7 df-res 5663 . . . . . 6 (◡𝐵 ↾ {𝐴}) = (◡𝐵 ∩ ({𝐴} × V))
85, 6, 73eqtr4ri 2794 . . . . 5 (◡𝐵 ↾ {𝐴}) = ◡(𝐵 ∩ (V × {𝐴}))
98eqeq1i 2765 . . . 4 ((◡𝐵 ↾ {𝐴}) = ∅ ↔ ◡(𝐵 ∩ (V × {𝐴})) = ∅)
10 relinxp 5793 . . . . 5 Rel (𝐵 ∩ (V × {𝐴}))
11 cnveq0 6193 . . . . 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 3007 . 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 1569   ∈ wcel 2144   ≠ wne 2955  Vcvv 3450   ∩ cin 4088  ∅c0 4277  {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 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-11 2193  ax-ext 2732  ax-sep 5248  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-sb 2099  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-br 5103  df-opab 5167  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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