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Theorem partsuc2 39052
Description: Property of the partition. (Contributed by Peter Mazsa, 24-Jul-2024.)
Assertion
Ref Expression
partsuc2 (((𝑅 ↾ (𝐴 ∪ {𝐴})) ∖ (𝑅 ↾ {𝐴})) Part ((𝐴 ∪ {𝐴}) ∖ {𝐴}) ↔ (𝑅𝐴) Part 𝐴)

Proof of Theorem partsuc2
StepHypRef Expression
1 ressucdifsn2 38657 . 2 ((𝑅 ↾ (𝐴 ∪ {𝐴})) ∖ (𝑅 ↾ {𝐴})) = (𝑅𝐴)
2 sucdifsn2 38655 . 2 ((𝐴 ∪ {𝐴}) ∖ {𝐴}) = 𝐴
3 parteq12 39049 . 2 ((((𝑅 ↾ (𝐴 ∪ {𝐴})) ∖ (𝑅 ↾ {𝐴})) = (𝑅𝐴) ∧ ((𝐴 ∪ {𝐴}) ∖ {𝐴}) = 𝐴) → (((𝑅 ↾ (𝐴 ∪ {𝐴})) ∖ (𝑅 ↾ {𝐴})) Part ((𝐴 ∪ {𝐴}) ∖ {𝐴}) ↔ (𝑅𝐴) Part 𝐴))
41, 2, 3mp2an 693 1 (((𝑅 ↾ (𝐴 ∪ {𝐴})) ∖ (𝑅 ↾ {𝐴})) Part ((𝐴 ∪ {𝐴}) ∖ {𝐴}) ↔ (𝑅𝐴) Part 𝐴)
Colors of variables: wff setvar class
Syntax hints:  wb 206   = wceq 1542  cdif 3897  cun 3898  {csn 4579  cres 5625   Part wpart 38394
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-11 2163  ax-ext 2707  ax-sep 5240  ax-nul 5250  ax-pr 5376  ax-reg 9499
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-sb 2069  df-clab 2714  df-cleq 2727  df-clel 2810  df-ral 3051  df-rex 3060  df-rab 3399  df-v 3441  df-dif 3903  df-un 3905  df-in 3907  df-ss 3917  df-nul 4285  df-if 4479  df-sn 4580  df-pr 4582  df-op 4586  df-br 5098  df-opab 5160  df-id 5518  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-ec 8637  df-qs 8641  df-coss 38671  df-cnvrefrel 38777  df-dmqs 38893  df-funALTV 38937  df-disjALTV 38960  df-part 39039
This theorem is referenced by: (None)
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