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Theorem dmcnvepres 38728
Description: Domain of the restricted converse epsilon relation. (Contributed by Peter Mazsa, 28-Jan-2026.)
Assertion
Ref Expression
dmcnvepres dom ( E ↾ 𝐴) = (𝐴 ∖ {∅})

Proof of Theorem dmcnvepres
StepHypRef Expression
1 dmres 5972 . 2 dom ( E ↾ 𝐴) = (𝐴 ∩ dom E )
2 dmcnvep 38726 . . 3 dom E = (V ∖ {∅})
32ineq2i 4158 . 2 (𝐴 ∩ dom E ) = (𝐴 ∩ (V ∖ {∅}))
4 invdif 4220 . 2 (𝐴 ∩ (V ∖ {∅})) = (𝐴 ∖ {∅})
51, 3, 43eqtri 2764 1 dom ( E ↾ 𝐴) = (𝐴 ∖ {∅})
Colors of variables: wff setvar class
Syntax hints:   = wceq 1542  Vcvv 3430  cdif 3887  cin 3889  c0 4274  {csn 4568   E cep 5524  ccnv 5624  dom cdm 5625  cres 5627
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-12 2185  ax-ext 2709  ax-sep 5232  ax-pr 5371
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ne 2934  df-ral 3053  df-rex 3063  df-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-br 5087  df-opab 5149  df-eprel 5525  df-xp 5631  df-rel 5632  df-cnv 5633  df-dm 5635  df-res 5637
This theorem is referenced by: (None)
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