Theorem kbass3 28977

Description: Dirac bra-ket associative law <. A | B >. <. C | D >. = ( <. A | B >. <. C | ) | D >.. (Contributed by NM, 30-May-2006.) (New usage is discouraged.)

Assertion

Ref	Expression
kbass3	|- ( ( ( A e. ~H /\ B e. ~H ) /\ ( C e. ~H /\ D e. ~H ) ) -> ( ( ( bra ` A ) ` B ) x. ( ( bra ` C ) ` D ) ) = ( ( ( ( bra ` A ) ` B ) .fn ( bra ` C ) ) ` D ) )

Proof of Theorem kbass3

Step	Hyp	Ref	Expression
1		bracl 28808	. . . 4 |- ( ( A e. ~H /\ B e. ~H ) -> ( ( bra ` A ) ` B ) e. CC )
2	1	adantr 481	. . 3 |- ( ( ( A e. ~H /\ B e. ~H ) /\ ( C e. ~H /\ D e. ~H ) ) -> ( ( bra ` A ) ` B ) e. CC )
3		brafn 28806	. . . 4 |- ( C e. ~H -> ( bra ` C ) : ~H --> CC )
4	3	ad2antrl 764	. . 3 |- ( ( ( A e. ~H /\ B e. ~H ) /\ ( C e. ~H /\ D e. ~H ) ) -> ( bra ` C ) : ~H --> CC )
5		simprr 796	. . 3 |- ( ( ( A e. ~H /\ B e. ~H ) /\ ( C e. ~H /\ D e. ~H ) ) -> D e. ~H )
6		hfmval 28603	. . 3 |- ( ( ( ( bra ` A ) ` B ) e. CC /\ ( bra ` C ) : ~H --> CC /\ D e. ~H ) -> ( ( ( ( bra ` A ) ` B ) .fn ( bra ` C ) ) ` D ) = ( ( ( bra ` A ) ` B ) x. ( ( bra ` C ) ` D ) ) )
7	2, 4, 5, 6	syl3anc 1326	. 2 |- ( ( ( A e. ~H /\ B e. ~H ) /\ ( C e. ~H /\ D e. ~H ) ) -> ( ( ( ( bra ` A ) ` B ) .fn ( bra ` C ) ) ` D ) = ( ( ( bra ` A ) ` B ) x. ( ( bra ` C ) ` D ) ) )
8	7	eqcomd 2628	1 |- ( ( ( A e. ~H /\ B e. ~H ) /\ ( C e. ~H /\ D e. ~H ) ) -> ( ( ( bra ` A ) ` B ) x. ( ( bra ` C ) ` D ) ) = ( ( ( ( bra ` A ) ` B ) .fn ( bra ` C ) ) ` D ) )

Syntax hints:   -> wi 4   /\ wa 384   = wceq 1483   e. wcel 1990   -->wf 5884   ` cfv 5888  (class class class)co 6650   CCcc 9934   x. cmul 9941   ~Hchil 27776   .fn chft 27799   bracbr 27813

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-hilex 27856  ax-hfi 27936

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-map 7859  df-hfmul 28593  df-bra 28709

This theorem is referenced by: (None)