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Theorem lsslsp 16091
Description: Spans in submodules correspond to spans in the containing module. (Contributed by Stefan O'Rear, 12-Dec-2014.) TODO: Shouldn't we swap  M `  G and  N `
 G since we are computing a property of  N `  G? (Like we say sin 0 = 0 and not 0 = sin 0.) - NM 15-Mar-2015.
Hypotheses
Ref Expression
lsslsp.x  |-  X  =  ( Ws  U )
lsslsp.m  |-  M  =  ( LSpan `  W )
lsslsp.n  |-  N  =  ( LSpan `  X )
lsslsp.l  |-  L  =  ( LSubSp `  W )
Assertion
Ref Expression
lsslsp  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( M `  G )  =  ( N `  G ) )

Proof of Theorem lsslsp
StepHypRef Expression
1 simp1 957 . . 3  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  W  e.  LMod )
2 lsslsp.x . . . . . . . 8  |-  X  =  ( Ws  U )
3 lsslsp.l . . . . . . . 8  |-  L  =  ( LSubSp `  W )
42, 3lsslmod 16036 . . . . . . 7  |-  ( ( W  e.  LMod  /\  U  e.  L )  ->  X  e.  LMod )
543adant3 977 . . . . . 6  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  X  e.  LMod )
6 simp3 959 . . . . . . 7  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  G  C_  U )
7 eqid 2436 . . . . . . . . . 10  |-  ( Base `  W )  =  (
Base `  W )
87, 3lssss 16013 . . . . . . . . 9  |-  ( U  e.  L  ->  U  C_  ( Base `  W
) )
983ad2ant2 979 . . . . . . . 8  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  U  C_  ( Base `  W
) )
102, 7ressbas2 13520 . . . . . . . 8  |-  ( U 
C_  ( Base `  W
)  ->  U  =  ( Base `  X )
)
119, 10syl 16 . . . . . . 7  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  U  =  ( Base `  X
) )
126, 11sseqtrd 3384 . . . . . 6  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  G  C_  ( Base `  X
) )
13 eqid 2436 . . . . . . 7  |-  ( Base `  X )  =  (
Base `  X )
14 eqid 2436 . . . . . . 7  |-  ( LSubSp `  X )  =  (
LSubSp `  X )
15 lsslsp.n . . . . . . 7  |-  N  =  ( LSpan `  X )
1613, 14, 15lspcl 16052 . . . . . 6  |-  ( ( X  e.  LMod  /\  G  C_  ( Base `  X
) )  ->  ( N `  G )  e.  ( LSubSp `  X )
)
175, 12, 16syl2anc 643 . . . . 5  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( N `  G )  e.  ( LSubSp `  X )
)
182, 3, 14lsslss 16037 . . . . . 6  |-  ( ( W  e.  LMod  /\  U  e.  L )  ->  (
( N `  G
)  e.  ( LSubSp `  X )  <->  ( ( N `  G )  e.  L  /\  ( N `  G )  C_  U ) ) )
19183adant3 977 . . . . 5  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  (
( N `  G
)  e.  ( LSubSp `  X )  <->  ( ( N `  G )  e.  L  /\  ( N `  G )  C_  U ) ) )
2017, 19mpbid 202 . . . 4  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  (
( N `  G
)  e.  L  /\  ( N `  G ) 
C_  U ) )
2120simpld 446 . . 3  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( N `  G )  e.  L )
2213, 15lspssid 16061 . . . 4  |-  ( ( X  e.  LMod  /\  G  C_  ( Base `  X
) )  ->  G  C_  ( N `  G
) )
235, 12, 22syl2anc 643 . . 3  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  G  C_  ( N `  G
) )
24 lsslsp.m . . . 4  |-  M  =  ( LSpan `  W )
253, 24lspssp 16064 . . 3  |-  ( ( W  e.  LMod  /\  ( N `  G )  e.  L  /\  G  C_  ( N `  G ) )  ->  ( M `  G )  C_  ( N `  G )
)
261, 21, 23, 25syl3anc 1184 . 2  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( M `  G )  C_  ( N `  G
) )
276, 9sstrd 3358 . . . . 5  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  G  C_  ( Base `  W
) )
287, 3, 24lspcl 16052 . . . . 5  |-  ( ( W  e.  LMod  /\  G  C_  ( Base `  W
) )  ->  ( M `  G )  e.  L )
291, 27, 28syl2anc 643 . . . 4  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( M `  G )  e.  L )
303, 24lspssp 16064 . . . 4  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( M `  G )  C_  U )
312, 3, 14lsslss 16037 . . . . 5  |-  ( ( W  e.  LMod  /\  U  e.  L )  ->  (
( M `  G
)  e.  ( LSubSp `  X )  <->  ( ( M `  G )  e.  L  /\  ( M `  G )  C_  U ) ) )
32313adant3 977 . . . 4  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  (
( M `  G
)  e.  ( LSubSp `  X )  <->  ( ( M `  G )  e.  L  /\  ( M `  G )  C_  U ) ) )
3329, 30, 32mpbir2and 889 . . 3  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( M `  G )  e.  ( LSubSp `  X )
)
347, 24lspssid 16061 . . . 4  |-  ( ( W  e.  LMod  /\  G  C_  ( Base `  W
) )  ->  G  C_  ( M `  G
) )
351, 27, 34syl2anc 643 . . 3  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  G  C_  ( M `  G
) )
3614, 15lspssp 16064 . . 3  |-  ( ( X  e.  LMod  /\  ( M `  G )  e.  ( LSubSp `  X )  /\  G  C_  ( M `
 G ) )  ->  ( N `  G )  C_  ( M `  G )
)
375, 33, 35, 36syl3anc 1184 . 2  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( N `  G )  C_  ( M `  G
) )
3826, 37eqssd 3365 1  |-  ( ( W  e.  LMod  /\  U  e.  L  /\  G  C_  U )  ->  ( M `  G )  =  ( N `  G ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 177    /\ wa 359    /\ w3a 936    = wceq 1652    e. wcel 1725    C_ wss 3320   ` cfv 5454  (class class class)co 6081   Basecbs 13469   ↾s cress 13470   LModclmod 15950   LSubSpclss 16008   LSpanclspn 16047
This theorem is referenced by:  lss0v  16092  islssfg  27145  lsslindf  27277  islinds3  27281  lcdlsp  32419
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-13 1727  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2417  ax-rep 4320  ax-sep 4330  ax-nul 4338  ax-pow 4377  ax-pr 4403  ax-un 4701  ax-cnex 9046  ax-resscn 9047  ax-1cn 9048  ax-icn 9049  ax-addcl 9050  ax-addrcl 9051  ax-mulcl 9052  ax-mulrcl 9053  ax-mulcom 9054  ax-addass 9055  ax-mulass 9056  ax-distr 9057  ax-i2m1 9058  ax-1ne0 9059  ax-1rid 9060  ax-rnegex 9061  ax-rrecex 9062  ax-cnre 9063  ax-pre-lttri 9064  ax-pre-lttrn 9065  ax-pre-ltadd 9066  ax-pre-mulgt0 9067
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3or 937  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2285  df-mo 2286  df-clab 2423  df-cleq 2429  df-clel 2432  df-nfc 2561  df-ne 2601  df-nel 2602  df-ral 2710  df-rex 2711  df-reu 2712  df-rmo 2713  df-rab 2714  df-v 2958  df-sbc 3162  df-csb 3252  df-dif 3323  df-un 3325  df-in 3327  df-ss 3334  df-pss 3336  df-nul 3629  df-if 3740  df-pw 3801  df-sn 3820  df-pr 3821  df-tp 3822  df-op 3823  df-uni 4016  df-int 4051  df-iun 4095  df-br 4213  df-opab 4267  df-mpt 4268  df-tr 4303  df-eprel 4494  df-id 4498  df-po 4503  df-so 4504  df-fr 4541  df-we 4543  df-ord 4584  df-on 4585  df-lim 4586  df-suc 4587  df-om 4846  df-xp 4884  df-rel 4885  df-cnv 4886  df-co 4887  df-dm 4888  df-rn 4889  df-res 4890  df-ima 4891  df-iota 5418  df-fun 5456  df-fn 5457  df-f 5458  df-f1 5459  df-fo 5460  df-f1o 5461  df-fv 5462  df-ov 6084  df-oprab 6085  df-mpt2 6086  df-1st 6349  df-2nd 6350  df-riota 6549  df-recs 6633  df-rdg 6668  df-er 6905  df-en 7110  df-dom 7111  df-sdom 7112  df-pnf 9122  df-mnf 9123  df-xr 9124  df-ltxr 9125  df-le 9126  df-sub 9293  df-neg 9294  df-nn 10001  df-2 10058  df-3 10059  df-4 10060  df-5 10061  df-6 10062  df-ndx 13472  df-slot 13473  df-base 13474  df-sets 13475  df-ress 13476  df-plusg 13542  df-sca 13545  df-vsca 13546  df-0g 13727  df-mnd 14690  df-grp 14812  df-minusg 14813  df-sbg 14814  df-subg 14941  df-mgp 15649  df-rng 15663  df-ur 15665  df-lmod 15952  df-lss 16009  df-lsp 16048
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