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Theorem mrcidmd 16897
Description: Moore closure is idempotent. Deduction form of mrcidm 16890. (Contributed by David Moews, 1-May-2017.)
Hypotheses
Ref Expression
mrcssidd.1 (𝜑𝐴 ∈ (Moore‘𝑋))
mrcssidd.2 𝑁 = (mrCls‘𝐴)
mrcssidd.3 (𝜑𝑈𝑋)
Assertion
Ref Expression
mrcidmd (𝜑 → (𝑁‘(𝑁𝑈)) = (𝑁𝑈))

Proof of Theorem mrcidmd
StepHypRef Expression
1 mrcssidd.1 . 2 (𝜑𝐴 ∈ (Moore‘𝑋))
2 mrcssidd.3 . 2 (𝜑𝑈𝑋)
3 mrcssidd.2 . . 3 𝑁 = (mrCls‘𝐴)
43mrcidm 16890 . 2 ((𝐴 ∈ (Moore‘𝑋) ∧ 𝑈𝑋) → (𝑁‘(𝑁𝑈)) = (𝑁𝑈))
51, 2, 4syl2anc 586 1 (𝜑 → (𝑁‘(𝑁𝑈)) = (𝑁𝑈))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1537  wcel 2114  wss 3936  cfv 6355  Moorecmre 16853  mrClscmrc 16854
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-int 4877  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-fv 6363  df-mre 16857  df-mrc 16858
This theorem is referenced by:  mressmrcd  16898  mreexexlem2d  16916  acsmap2d  17789
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