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Theorem parteq1 39809
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 39769 . 2 (𝑅 = 𝑆 → (( Disj 𝑅 ∧ (dom 𝑅 / 𝑅) = 𝐴) ↔ ( Disj 𝑆 ∧ (dom 𝑆 / 𝑆) = 𝐴)))
2 dfpart2 39804 . 2 (𝑅 Part 𝐴 ↔ ( Disj 𝑅 ∧ (dom 𝑅 / 𝑅) = 𝐴))
3 dfpart2 39804 . 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 1570  dom cdm 5651   / cqs 8716   Disj wdisjALTV 39151   Part wpart 39156
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-11 2194  ax-ext 2733  ax-sep 5249  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2740  df-cleq 2753  df-clel 2836  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-br 5104  df-opab 5168  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-ec 8719  df-qs 8723  df-coss 39433  df-cnvrefrel 39539  df-dmqs 39655  df-funALTV 39699  df-disjALTV 39722  df-part 39801
This theorem is used by:  parteq12  39811  parteq1i  39812  parteq1d  39813
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