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Theorem hiassdit 8957
Description: Distributive/associative law for inner product, useful for linearity proofs.
Assertion
Ref Expression
hiassdit |- (((A e. CC /\ B e. H~) /\ (C e. H~ /\ D e. H~)) -> (((A .h B) +h C) .ih D) = ((A x. (B .ih D)) + (C .ih D)))

Proof of Theorem hiassdit
StepHypRef Expression
1 ax-his2 8950 . . . 4 |- (((A .h B) e. H~ /\ C e. H~ /\ D e. H~) -> (((A .h B) +h C) .ih D) = (((A .h B) .ih D) + (C .ih D)))
213expb 834 . . 3 |- (((A .h B) e. H~ /\ (C e. H~ /\ D e. H~)) -> (((A .h B) +h C) .ih D) = (((A .h B) .ih D) + (C .ih D)))
3 hvmulclt 8883 . . 3 |- ((A e. CC /\ B e. H~) -> (A .h B) e. H~)
42, 3sylan 448 . 2 |- (((A e. CC /\ B e. H~) /\ (C e. H~ /\ D e. H~)) -> (((A .h B) +h C) .ih D) = (((A .h B) .ih D) + (C .ih D)))
5 ax-his3 8951 . . . . 5 |- ((A e. CC /\ B e. H~ /\ D e. H~) -> ((A .h B) .ih D) = (A x. (B .ih D)))
653expa 833 . . . 4 |- (((A e. CC /\ B e. H~) /\ D e. H~) -> ((A .h B) .ih D) = (A x. (B .ih D)))
76adantrl 394 . . 3 |- (((A e. CC /\ B e. H~) /\ (C e. H~ /\ D e. H~)) -> ((A .h B) .ih D) = (A x. (B .ih D)))
87opreq1d 3975 . 2 |- (((A e. CC /\ B e. H~) /\ (C e. H~ /\ D e. H~)) -> (((A .h B) .ih D) + (C .ih D)) = ((A x. (B .ih D)) + (C .ih D)))
94, 8eqtrd 1507 1 |- (((A e. CC /\ B e. H~) /\ (C e. H~ /\ D e. H~)) -> (((A .h B) +h C) .ih D) = ((A x. (B .ih D)) + (C .ih D)))
Colors of variables: wff set class
Syntax hints:   -> wi 3   /\ wa 223   = wceq 956   e. wcel 958  (class class class)co 3963  CCcc 5232   + caddc 5237   x. cmul 5239  H~chil 8788   +h cva 8789   .h csm 8790   .ih csp 8793
This theorem is referenced by:  unoplint 9844  hmoplint 9866
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 962  ax-gen 963  ax-8 964  ax-10 966  ax-11 967  ax-12 968  ax-13 969  ax-14 970  ax-17 971  ax-4 973  ax-5o 975  ax-6o 978  ax-9o 1123  ax-10o 1140  ax-16 1210  ax-11o 1218  ax-ext 1459  ax-sep 2703  ax-pow 2742  ax-pr 2779  ax-un 2866  ax-hfvmul 8875  ax-his2 8950  ax-his3 8951
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-3an 777  df-ex 981  df-sb 1172  df-eu 1382  df-mo 1383  df-clab 1464  df-cleq 1469  df-clel 1472  df-ne 1587  df-ral 1649  df-rex 1650  df-v 1812  df-dif 2049  df-un 2050  df-in 2051  df-ss 2053  df-nul 2281  df-pw 2402  df-sn 2412  df-pr 2413  df-op 2416  df-uni 2504  df-br 2620  df-opab 2667  df-id 2835  df-xp 3184  df-cnv 3186  df-co 3187  df-dm 3188  df-rn 3189  df-res 3190  df-ima 3191  df-fun 3192  df-fn 3193  df-f 3194  df-fv 3198  df-opr 3965
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