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Theorem mrcssid 16939
Description: The closure of a set is a superset. (Contributed by Stefan O'Rear, 31-Jan-2015.)
Hypothesis
Ref Expression
mrcfval.f 𝐹 = (mrCls‘𝐶)
Assertion
Ref Expression
mrcssid ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈𝑋) → 𝑈 ⊆ (𝐹𝑈))

Proof of Theorem mrcssid
Dummy variable 𝑠 is distinct from all other variables.
StepHypRef Expression
1 ssintub 4857 . 2 𝑈 {𝑠𝐶𝑈𝑠}
2 mrcfval.f . . 3 𝐹 = (mrCls‘𝐶)
32mrcval 16932 . 2 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈𝑋) → (𝐹𝑈) = {𝑠𝐶𝑈𝑠})
41, 3sseqtrrid 3946 1 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈𝑋) → 𝑈 ⊆ (𝐹𝑈))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 400   = wceq 1539  wcel 2112  {crab 3075  wss 3859   cint 4839  cfv 6336  Moorecmre 16904  mrClscmrc 16905
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1912  ax-6 1971  ax-7 2016  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2159  ax-12 2176  ax-ext 2730  ax-sep 5170  ax-nul 5177  ax-pow 5235  ax-pr 5299  ax-un 7460
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 846  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2071  df-mo 2558  df-eu 2589  df-clab 2737  df-cleq 2751  df-clel 2831  df-nfc 2902  df-ne 2953  df-ral 3076  df-rex 3077  df-rab 3080  df-v 3412  df-sbc 3698  df-csb 3807  df-dif 3862  df-un 3864  df-in 3866  df-ss 3876  df-nul 4227  df-if 4422  df-pw 4497  df-sn 4524  df-pr 4526  df-op 4530  df-uni 4800  df-int 4840  df-br 5034  df-opab 5096  df-mpt 5114  df-id 5431  df-xp 5531  df-rel 5532  df-cnv 5533  df-co 5534  df-dm 5535  df-rn 5536  df-res 5537  df-ima 5538  df-iota 6295  df-fun 6338  df-fn 6339  df-f 6340  df-fv 6344  df-mre 16908  df-mrc 16909
This theorem is referenced by:  mrcidb2  16940  mrcuni  16943  mrcssidd  16947  mrelatlub  17855  gsumwspan  18070  symggen  18658  mrccss  20452  ismrcd2  40006  ismrc  40008  mrefg2  40014
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