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Theorem coemptyd 14921
Description: Deduction about composition of classes with no relational content in common. (Contributed by RP, 24-Dec-2019.)
Hypothesis
Ref Expression
coemptyd.1 (𝜑 → (dom 𝐴 ∩ ran 𝐵) = ∅)
Assertion
Ref Expression
coemptyd (𝜑 → (𝐴𝐵) = ∅)

Proof of Theorem coemptyd
StepHypRef Expression
1 coemptyd.1 . 2 (𝜑 → (dom 𝐴 ∩ ran 𝐵) = ∅)
2 coeq0 6216 . 2 ((𝐴𝐵) = ∅ ↔ (dom 𝐴 ∩ ran 𝐵) = ∅)
31, 2sylibr 234 1 (𝜑 → (𝐴𝐵) = ∅)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1540  cin 3910  c0 4292  dom cdm 5631  ran crn 5632  ccom 5635
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-ral 3045  df-rex 3054  df-rab 3403  df-v 3446  df-dif 3914  df-un 3916  df-in 3918  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-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643
This theorem is referenced by:  xptrrel  14922  cosnopne  32590  coeq0i  42714  conrel1d  43625  conrel2d  43626  clsneibex  44064  neicvgbex  44074
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