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Theorem rnsnn0 6169
Description: The range of a singleton is nonzero iff the singleton argument is an ordered pair. (Contributed by NM, 14-Dec-2008.)
Assertion
Ref Expression
rnsnn0 (𝐴 ∈ (V × V) ↔ ran {𝐴} ≠ ∅)

Proof of Theorem rnsnn0
StepHypRef Expression
1 dmsnn0 6168 . 2 (𝐴 ∈ (V × V) ↔ dom {𝐴} ≠ ∅)
2 dm0rn0 5878 . . 3 (dom {𝐴} = ∅ ↔ ran {𝐴} = ∅)
32necon3bii 2977 . 2 (dom {𝐴} ≠ ∅ ↔ ran {𝐴} ≠ ∅)
41, 3bitri 275 1 (𝐴 ∈ (V × V) ↔ ran {𝐴} ≠ ∅)
Colors of variables: wff setvar class
Syntax hints:  wb 206  wcel 2109  wne 2925  Vcvv 3444  c0 4292  {csn 4585   × cxp 5629  dom cdm 5631  ran crn 5632
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5246  ax-nul 5256  ax-pr 5382
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-clab 2708  df-cleq 2721  df-clel 2803  df-ne 2926  df-rab 3403  df-v 3446  df-dif 3914  df-un 3916  df-ss 3928  df-nul 4293  df-if 4485  df-sn 4586  df-pr 4588  df-op 4592  df-br 5103  df-opab 5165  df-xp 5637  df-cnv 5639  df-dm 5641  df-rn 5642
This theorem is referenced by:  2ndnpr  7952  2nd2val  7976
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