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Theorem parteq1 39952
Description: Equality theorem for partition. (Contributed by Peter Mazsa, 5-Oct-2021.)
Assertion
Ref Expression
parteq1 (𝑅 = 𝑆 → (𝑅 Part 𝐴 ↔ 𝑆 Part 𝐴))

Proof of Theorem parteq1
StepHypRef Expression
1 disjdmqseqeq1 39912 . 2 (𝑅 = 𝑆 → (( Disj 𝑅 ∧ (dom 𝑅 / 𝑅) = 𝐴) ↔ ( Disj 𝑆 ∧ (dom 𝑆 / 𝑆) = 𝐴)))
2 dfpart2 39947 . 2 (𝑅 Part 𝐴 ↔ ( Disj 𝑅 ∧ (dom 𝑅 / 𝑅) = 𝐴))
3 dfpart2 39947 . 2 (𝑆 Part 𝐴 ↔ ( Disj 𝑆 ∧ (dom 𝑆 / 𝑆) = 𝐴))
41, 2, 33bitr4g 317 1 (𝑅 = 𝑆 → (𝑅 Part 𝐴 ↔ 𝑆 Part 𝐴))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1569  dom cdm 5655   / cqs 8730   Disj wdisjALTV 39294   Part wpart 39299
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-11 2196  ax-ext 2735  ax-sep 5252  ax-pr 5395
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-sb 2101  df-clab 2742  df-cleq 2755  df-clel 2839  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4839  df-br 5107  df-opab 5171  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-ec 8733  df-qs 8737  df-coss 39576  df-cnvrefrel 39682  df-dmqs 39798  df-funALTV 39842  df-disjALTV 39865  df-part 39944
This theorem is used by:  parteq12  39954  parteq1i  39955  parteq1d  39956
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