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Theorem ip2di 16872
Description: Distributive law for inner product. (Contributed by NM, 17-Apr-2008.) (Revised by Mario Carneiro, 7-Oct-2015.)
Hypotheses
Ref Expression
phlsrng.f  |-  F  =  (Scalar `  W )
phllmhm.h  |-  .,  =  ( .i `  W )
phllmhm.v  |-  V  =  ( Base `  W
)
ipdir.g  |-  .+  =  ( +g  `  W )
ipdir.p  |-  .+^  =  ( +g  `  F )
ip2di.1  |-  ( ph  ->  W  e.  PreHil )
ip2di.2  |-  ( ph  ->  A  e.  V )
ip2di.3  |-  ( ph  ->  B  e.  V )
ip2di.4  |-  ( ph  ->  C  e.  V )
ip2di.5  |-  ( ph  ->  D  e.  V )
Assertion
Ref Expression
ip2di  |-  ( ph  ->  ( ( A  .+  B )  .,  ( C  .+  D ) )  =  ( ( ( A  .,  C ) 
.+^  ( B  .,  D ) )  .+^  ( ( A  .,  D )  .+^  ( B 
.,  C ) ) ) )

Proof of Theorem ip2di
StepHypRef Expression
1 ip2di.1 . . 3  |-  ( ph  ->  W  e.  PreHil )
2 ip2di.2 . . 3  |-  ( ph  ->  A  e.  V )
3 ip2di.3 . . 3  |-  ( ph  ->  B  e.  V )
4 phllmod 16861 . . . . 5  |-  ( W  e.  PreHil  ->  W  e.  LMod )
51, 4syl 16 . . . 4  |-  ( ph  ->  W  e.  LMod )
6 ip2di.4 . . . 4  |-  ( ph  ->  C  e.  V )
7 ip2di.5 . . . 4  |-  ( ph  ->  D  e.  V )
8 phllmhm.v . . . . 5  |-  V  =  ( Base `  W
)
9 ipdir.g . . . . 5  |-  .+  =  ( +g  `  W )
108, 9lmodvacl 15964 . . . 4  |-  ( ( W  e.  LMod  /\  C  e.  V  /\  D  e.  V )  ->  ( C  .+  D )  e.  V )
115, 6, 7, 10syl3anc 1184 . . 3  |-  ( ph  ->  ( C  .+  D
)  e.  V )
12 phlsrng.f . . . 4  |-  F  =  (Scalar `  W )
13 phllmhm.h . . . 4  |-  .,  =  ( .i `  W )
14 ipdir.p . . . 4  |-  .+^  =  ( +g  `  F )
1512, 13, 8, 9, 14ipdir 16870 . . 3  |-  ( ( W  e.  PreHil  /\  ( A  e.  V  /\  B  e.  V  /\  ( C  .+  D )  e.  V ) )  ->  ( ( A 
.+  B )  .,  ( C  .+  D ) )  =  ( ( A  .,  ( C 
.+  D ) ) 
.+^  ( B  .,  ( C  .+  D ) ) ) )
161, 2, 3, 11, 15syl13anc 1186 . 2  |-  ( ph  ->  ( ( A  .+  B )  .,  ( C  .+  D ) )  =  ( ( A 
.,  ( C  .+  D ) )  .+^  ( B  .,  ( C 
.+  D ) ) ) )
1712, 13, 8, 9, 14ipdi 16871 . . . 4  |-  ( ( W  e.  PreHil  /\  ( A  e.  V  /\  C  e.  V  /\  D  e.  V )
)  ->  ( A  .,  ( C  .+  D
) )  =  ( ( A  .,  C
)  .+^  ( A  .,  D ) ) )
181, 2, 6, 7, 17syl13anc 1186 . . 3  |-  ( ph  ->  ( A  .,  ( C  .+  D ) )  =  ( ( A 
.,  C )  .+^  ( A  .,  D ) ) )
1912, 13, 8, 9, 14ipdi 16871 . . . . 5  |-  ( ( W  e.  PreHil  /\  ( B  e.  V  /\  C  e.  V  /\  D  e.  V )
)  ->  ( B  .,  ( C  .+  D
) )  =  ( ( B  .,  C
)  .+^  ( B  .,  D ) ) )
201, 3, 6, 7, 19syl13anc 1186 . . . 4  |-  ( ph  ->  ( B  .,  ( C  .+  D ) )  =  ( ( B 
.,  C )  .+^  ( B  .,  D ) ) )
2112phlsrng 16862 . . . . . . 7  |-  ( W  e.  PreHil  ->  F  e.  *Ring )
221, 21syl 16 . . . . . 6  |-  ( ph  ->  F  e.  *Ring )
23 srngrng 15940 . . . . . 6  |-  ( F  e.  *Ring  ->  F  e.  Ring )
24 rngcmn 15694 . . . . . 6  |-  ( F  e.  Ring  ->  F  e. CMnd
)
2522, 23, 243syl 19 . . . . 5  |-  ( ph  ->  F  e. CMnd )
26 eqid 2436 . . . . . . 7  |-  ( Base `  F )  =  (
Base `  F )
2712, 13, 8, 26ipcl 16864 . . . . . 6  |-  ( ( W  e.  PreHil  /\  B  e.  V  /\  C  e.  V )  ->  ( B  .,  C )  e.  ( Base `  F
) )
281, 3, 6, 27syl3anc 1184 . . . . 5  |-  ( ph  ->  ( B  .,  C
)  e.  ( Base `  F ) )
2912, 13, 8, 26ipcl 16864 . . . . . 6  |-  ( ( W  e.  PreHil  /\  B  e.  V  /\  D  e.  V )  ->  ( B  .,  D )  e.  ( Base `  F
) )
301, 3, 7, 29syl3anc 1184 . . . . 5  |-  ( ph  ->  ( B  .,  D
)  e.  ( Base `  F ) )
3126, 14cmncom 15428 . . . . 5  |-  ( ( F  e. CMnd  /\  ( B  .,  C )  e.  ( Base `  F
)  /\  ( B  .,  D )  e.  (
Base `  F )
)  ->  ( ( B  .,  C )  .+^  ( B  .,  D ) )  =  ( ( B  .,  D ) 
.+^  ( B  .,  C ) ) )
3225, 28, 30, 31syl3anc 1184 . . . 4  |-  ( ph  ->  ( ( B  .,  C )  .+^  ( B 
.,  D ) )  =  ( ( B 
.,  D )  .+^  ( B  .,  C ) ) )
3320, 32eqtrd 2468 . . 3  |-  ( ph  ->  ( B  .,  ( C  .+  D ) )  =  ( ( B 
.,  D )  .+^  ( B  .,  C ) ) )
3418, 33oveq12d 6099 . 2  |-  ( ph  ->  ( ( A  .,  ( C  .+  D ) )  .+^  ( B  .,  ( C  .+  D
) ) )  =  ( ( ( A 
.,  C )  .+^  ( A  .,  D ) )  .+^  ( ( B  .,  D )  .+^  ( B  .,  C ) ) ) )
3512, 13, 8, 26ipcl 16864 . . . 4  |-  ( ( W  e.  PreHil  /\  A  e.  V  /\  C  e.  V )  ->  ( A  .,  C )  e.  ( Base `  F
) )
361, 2, 6, 35syl3anc 1184 . . 3  |-  ( ph  ->  ( A  .,  C
)  e.  ( Base `  F ) )
3712, 13, 8, 26ipcl 16864 . . . 4  |-  ( ( W  e.  PreHil  /\  A  e.  V  /\  D  e.  V )  ->  ( A  .,  D )  e.  ( Base `  F
) )
381, 2, 7, 37syl3anc 1184 . . 3  |-  ( ph  ->  ( A  .,  D
)  e.  ( Base `  F ) )
3926, 14cmn4 15431 . . 3  |-  ( ( F  e. CMnd  /\  (
( A  .,  C
)  e.  ( Base `  F )  /\  ( A  .,  D )  e.  ( Base `  F
) )  /\  (
( B  .,  D
)  e.  ( Base `  F )  /\  ( B  .,  C )  e.  ( Base `  F
) ) )  -> 
( ( ( A 
.,  C )  .+^  ( A  .,  D ) )  .+^  ( ( B  .,  D )  .+^  ( B  .,  C ) ) )  =  ( ( ( A  .,  C )  .+^  ( B 
.,  D ) ) 
.+^  ( ( A 
.,  D )  .+^  ( B  .,  C ) ) ) )
4025, 36, 38, 30, 28, 39syl122anc 1193 . 2  |-  ( ph  ->  ( ( ( A 
.,  C )  .+^  ( A  .,  D ) )  .+^  ( ( B  .,  D )  .+^  ( B  .,  C ) ) )  =  ( ( ( A  .,  C )  .+^  ( B 
.,  D ) ) 
.+^  ( ( A 
.,  D )  .+^  ( B  .,  C ) ) ) )
4116, 34, 403eqtrd 2472 1  |-  ( ph  ->  ( ( A  .+  B )  .,  ( C  .+  D ) )  =  ( ( ( A  .,  C ) 
.+^  ( B  .,  D ) )  .+^  ( ( A  .,  D )  .+^  ( B 
.,  C ) ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1652    e. wcel 1725   ` cfv 5454  (class class class)co 6081   Basecbs 13469   +g cplusg 13529  Scalarcsca 13532   .icip 13534  CMndccmn 15412   Ringcrg 15660   *Ringcsr 15932   LModclmod 15950   PreHilcphl 16855
This theorem is referenced by:  cph2di  19169
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-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-tpos 6479  df-riota 6549  df-recs 6633  df-rdg 6668  df-er 6905  df-map 7020  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-plusg 13542  df-mulr 13543  df-sca 13545  df-vsca 13546  df-0g 13727  df-mnd 14690  df-mhm 14738  df-grp 14812  df-minusg 14813  df-ghm 15004  df-cmn 15414  df-abl 15415  df-mgp 15649  df-rng 15663  df-ur 15665  df-oppr 15728  df-rnghom 15819  df-staf 15933  df-srng 15934  df-lmod 15952  df-lmhm 16098  df-lvec 16175  df-sra 16244  df-rgmod 16245  df-phl 16857
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