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Theorem partsuc2 39203
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 38808 . 2 ((𝑅 ↾ (𝐴 ∪ {𝐴})) ∖ (𝑅 ↾ {𝐴})) = (𝑅𝐴)
2 sucdifsn2 38806 . 2 ((𝐴 ∪ {𝐴}) ∖ {𝐴}) = 𝐴
3 parteq12 39200 . 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 3886  cun 3887  {csn 4567  cres 5633   Part wpart 38545
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 2708  ax-sep 5231  ax-pr 5375  ax-reg 9507
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 2715  df-cleq 2728  df-clel 2811  df-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-sn 4568  df-pr 4570  df-op 4574  df-br 5086  df-opab 5148  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-ec 8645  df-qs 8649  df-coss 38822  df-cnvrefrel 38928  df-dmqs 39044  df-funALTV 39088  df-disjALTV 39111  df-part 39190
This theorem is referenced by: (None)
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