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Theorem submcl 13181
Description: Submonoids are closed under the monoid operation. (Contributed by Mario Carneiro, 10-Mar-2015.)
Hypothesis
Ref Expression
submcl.p  |-  .+  =  ( +g  `  M )
Assertion
Ref Expression
submcl  |-  ( ( S  e.  (SubMnd `  M )  /\  X  e.  S  /\  Y  e.  S )  ->  ( X  .+  Y )  e.  S )

Proof of Theorem submcl
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 submrcl 13173 . . . . . . 7  |-  ( S  e.  (SubMnd `  M
)  ->  M  e.  Mnd )
2 eqid 2196 . . . . . . . 8  |-  ( Base `  M )  =  (
Base `  M )
3 eqid 2196 . . . . . . . 8  |-  ( 0g
`  M )  =  ( 0g `  M
)
4 submcl.p . . . . . . . 8  |-  .+  =  ( +g  `  M )
52, 3, 4issubm 13174 . . . . . . 7  |-  ( M  e.  Mnd  ->  ( S  e.  (SubMnd `  M
)  <->  ( S  C_  ( Base `  M )  /\  ( 0g `  M
)  e.  S  /\  A. x  e.  S  A. y  e.  S  (
x  .+  y )  e.  S ) ) )
61, 5syl 14 . . . . . 6  |-  ( S  e.  (SubMnd `  M
)  ->  ( S  e.  (SubMnd `  M )  <->  ( S  C_  ( Base `  M )  /\  ( 0g `  M )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x  .+  y )  e.  S
) ) )
76ibi 176 . . . . 5  |-  ( S  e.  (SubMnd `  M
)  ->  ( S  C_  ( Base `  M
)  /\  ( 0g `  M )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x  .+  y )  e.  S ) )
87simp3d 1013 . . . 4  |-  ( S  e.  (SubMnd `  M
)  ->  A. x  e.  S  A. y  e.  S  ( x  .+  y )  e.  S
)
9 ovrspc2v 5951 . . . 4  |-  ( ( ( X  e.  S  /\  Y  e.  S
)  /\  A. x  e.  S  A. y  e.  S  ( x  .+  y )  e.  S
)  ->  ( X  .+  Y )  e.  S
)
108, 9sylan2 286 . . 3  |-  ( ( ( X  e.  S  /\  Y  e.  S
)  /\  S  e.  (SubMnd `  M ) )  ->  ( X  .+  Y )  e.  S
)
1110ancoms 268 . 2  |-  ( ( S  e.  (SubMnd `  M )  /\  ( X  e.  S  /\  Y  e.  S )
)  ->  ( X  .+  Y )  e.  S
)
12113impb 1201 1  |-  ( ( S  e.  (SubMnd `  M )  /\  X  e.  S  /\  Y  e.  S )  ->  ( X  .+  Y )  e.  S )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    /\ w3a 980    = wceq 1364    e. wcel 2167   A.wral 2475    C_ wss 3157   ` cfv 5259  (class class class)co 5925   Basecbs 12703   +g cplusg 12780   0gc0g 12958   Mndcmnd 13118  SubMndcsubmnd 13160
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-sep 4152  ax-pow 4208  ax-pr 4243  ax-un 4469  ax-cnex 7987  ax-resscn 7988  ax-1re 7990  ax-addrcl 7993
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-rab 2484  df-v 2765  df-sbc 2990  df-csb 3085  df-un 3161  df-in 3163  df-ss 3170  df-pw 3608  df-sn 3629  df-pr 3630  df-op 3632  df-uni 3841  df-int 3876  df-br 4035  df-opab 4096  df-mpt 4097  df-id 4329  df-xp 4670  df-rel 4671  df-cnv 4672  df-co 4673  df-dm 4674  df-rn 4675  df-res 4676  df-ima 4677  df-iota 5220  df-fun 5261  df-fn 5262  df-fv 5267  df-ov 5928  df-inn 9008  df-ndx 12706  df-slot 12707  df-base 12709  df-submnd 13162
This theorem is referenced by:  resmhm  13189  mhmima  13193  gsumwsubmcl  13198  submmulgcl  13371  gsumfzsubmcl  13544
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