Theorem rrgsupp 14428

Description: Left multiplication by a left regular element does not change the support set of a vector. (Contributed by Stefan O'Rear, 28-Mar-2015.) (Revised by AV, 20-Jul-2019.)

Hypotheses

Ref	Expression
rrgval.e	|- E = (RLReg ` R )
rrgval.b	|- B = ( Base ` R )
rrgval.t	|- .x. = ( .r ` R )
rrgval.z	|- .0. = ( 0g ` R )
rrgsupp.i	|- ( ph -> I e. V )
rrgsupp.r	|- ( ph -> R e. Ring )
rrgsupp.x	|- ( ph -> X e. E )
rrgsupp.y	|- ( ph -> Y : I --> B )

Assertion

Ref	Expression
rrgsupp	|- ( ph -> ( ( ( I X. { X } ) oF .x. Y ) supp .0. ) = ( Y supp .0. ) )

Proof of Theorem rrgsupp

Dummy variables x y u are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		rrgsupp.i	. . . . . . . . 9 |- ( ph -> I e. V )
2		rrgsupp.x	. . . . . . . . . 10 |- ( ph -> X e. E )
3	2	adantr 276	. . . . . . . . 9 |- ( ( ph /\ y e. I ) -> X e. E )
4		rrgsupp.y	. . . . . . . . . 10 |- ( ph -> Y : I --> B )
5	4	ffvelcdmda 5814	. . . . . . . . 9 |- ( ( ph /\ y e. I ) -> ( Y ` y ) e. B )
6		fconstmpt 4799	. . . . . . . . . 10 |- ( I X. { X } ) = ( y e. I |-> X )
7	6	a1i 9	. . . . . . . . 9 |- ( ph -> ( I X. { X } ) = ( y e. I |-> X ) )
8	4	feqmptd 5732	. . . . . . . . 9 |- ( ph -> Y = ( y e. I |-> ( Y ` y ) ) )
9	1, 3, 5, 7, 8	offval2 6284	. . . . . . . 8 |- ( ph -> ( ( I X. { X } ) oF .x. Y ) = ( y e. I |-> ( X .x. ( Y ` y ) ) ) )
10	9	adantr 276	. . . . . . 7 |- ( ( ph /\ x e. I ) -> ( ( I X. { X } ) oF .x. Y ) = ( y e. I |-> ( X .x. ( Y ` y ) ) ) )
11	10	fveq1d 5674	. . . . . 6 |- ( ( ph /\ x e. I ) -> ( ( ( I X. { X } ) oF .x. Y ) ` x ) = ( ( y e. I |-> ( X .x. ( Y ` y ) ) ) ` x ) )
12		eqid 2234	. . . . . . 7 |- ( y e. I |-> ( X .x. ( Y ` y ) ) ) = ( y e. I |-> ( X .x. ( Y ` y ) ) )
13		fveq2 5672	. . . . . . . 8 |- ( y = x -> ( Y ` y ) = ( Y ` x ) )
14	13	oveq2d 6068	. . . . . . 7 |- ( y = x -> ( X .x. ( Y ` y ) ) = ( X .x. ( Y ` x ) ) )
15		simpr 110	. . . . . . 7 |- ( ( ph /\ x e. I ) -> x e. I )
16		rrgsupp.r	. . . . . . . . 9 |- ( ph -> R e. Ring )
17	16	adantr 276	. . . . . . . 8 |- ( ( ph /\ x e. I ) -> R e. Ring )
18		rrgval.e	. . . . . . . . . . . 12 |- E = (RLReg ` R )
19		rrgval.b	. . . . . . . . . . . 12 |- B = ( Base ` R )
20		rrgval.t	. . . . . . . . . . . 12 |- .x. = ( .r ` R )
21		rrgval.z	. . . . . . . . . . . 12 |- .0. = ( 0g ` R )
22	18, 19, 20, 21	isrrg 14425	. . . . . . . . . . 11 |- ( X e. E <-> ( X e. B /\ A. u e. B ( ( X .x. u ) = .0. -> u = .0. ) ) )
23	2, 22	sylib 122	. . . . . . . . . 10 |- ( ph -> ( X e. B /\ A. u e. B ( ( X .x. u ) = .0. -> u = .0. ) ) )
24	23	simpld 112	. . . . . . . . 9 |- ( ph -> X e. B )
25	24	adantr 276	. . . . . . . 8 |- ( ( ph /\ x e. I ) -> X e. B )
26	4	ffvelcdmda 5814	. . . . . . . 8 |- ( ( ph /\ x e. I ) -> ( Y ` x ) e. B )
27	19, 20	ringcl 14174	. . . . . . . 8 |- ( ( R e. Ring /\ X e. B /\ ( Y ` x ) e. B ) -> ( X .x. ( Y ` x ) ) e. B )
28	17, 25, 26, 27	syl3anc 1274	. . . . . . 7 |- ( ( ph /\ x e. I ) -> ( X .x. ( Y ` x ) ) e. B )
29	12, 14, 15, 28	fvmptd3 5773	. . . . . 6 |- ( ( ph /\ x e. I ) -> ( ( y e. I |-> ( X .x. ( Y ` y ) ) ) ` x ) = ( X .x. ( Y ` x ) ) )
30	11, 29	eqtrd 2267	. . . . 5 |- ( ( ph /\ x e. I ) -> ( ( ( I X. { X } ) oF .x. Y ) ` x ) = ( X .x. ( Y ` x ) ) )
31	30	neeq1d 2432	. . . 4 |- ( ( ph /\ x e. I ) -> ( ( ( ( I X. { X } ) oF .x. Y ) ` x ) =/= .0. <-> ( X .x. ( Y ` x ) ) =/= .0. ) )
32	31	rabbidva 2803	. . 3 |- ( ph -> { x e. I | ( ( ( I X. { X } ) oF .x. Y ) ` x ) =/= .0. } = { x e. I | ( X .x. ( Y ` x ) ) =/= .0. } )
33	2	adantr 276	. . . . . 6 |- ( ( ph /\ x e. I ) -> X e. E )
34	18, 19, 20, 21	rrgeq0 14427	. . . . . 6 |- ( ( R e. Ring /\ X e. E /\ ( Y ` x ) e. B ) -> ( ( X .x. ( Y ` x ) ) = .0. <-> ( Y ` x ) = .0. ) )
35	17, 33, 26, 34	syl3anc 1274	. . . . 5 |- ( ( ph /\ x e. I ) -> ( ( X .x. ( Y ` x ) ) = .0. <-> ( Y ` x ) = .0. ) )
36	35	necon3bid 2455	. . . 4 |- ( ( ph /\ x e. I ) -> ( ( X .x. ( Y ` x ) ) =/= .0. <-> ( Y ` x ) =/= .0. ) )
37	36	rabbidva 2803	. . 3 |- ( ph -> { x e. I | ( X .x. ( Y ` x ) ) =/= .0. } = { x e. I | ( Y ` x ) =/= .0. } )
38	32, 37	eqtrd 2267	. 2 |- ( ph -> { x e. I | ( ( ( I X. { X } ) oF .x. Y ) ` x ) =/= .0. } = { x e. I | ( Y ` x ) =/= .0. } )
39	16	adantr 276	. . . . . . 7 |- ( ( ph /\ y e. I ) -> R e. Ring )
40	24	adantr 276	. . . . . . 7 |- ( ( ph /\ y e. I ) -> X e. B )
41	19, 20	ringcl 14174	. . . . . . 7 |- ( ( R e. Ring /\ X e. B /\ ( Y ` y ) e. B ) -> ( X .x. ( Y ` y ) ) e. B )
42	39, 40, 5, 41	syl3anc 1274	. . . . . 6 |- ( ( ph /\ y e. I ) -> ( X .x. ( Y ` y ) ) e. B )
43	42	ralrimiva 2617	. . . . 5 |- ( ph -> A. y e. I ( X .x. ( Y ` y ) ) e. B )
44	12	fnmpt 5487	. . . . 5 |- ( A. y e. I ( X .x. ( Y ` y ) ) e. B -> ( y e. I |-> ( X .x. ( Y ` y ) ) ) Fn I )
45	43, 44	syl 14	. . . 4 |- ( ph -> ( y e. I |-> ( X .x. ( Y ` y ) ) ) Fn I )
46	9	fneq1d 5448	. . . 4 |- ( ph -> ( ( ( I X. { X } ) oF .x. Y ) Fn I <-> ( y e. I |-> ( X .x. ( Y ` y ) ) ) Fn I ) )
47	45, 46	mpbird 167	. . 3 |- ( ph -> ( ( I X. { X } ) oF .x. Y ) Fn I )
48	19, 21	ring0cl 14182	. . . 4 |- ( R e. Ring -> .0. e. B )
49	16, 48	syl 14	. . 3 |- ( ph -> .0. e. B )
50		suppvalfn 6443	. . 3 |- ( ( ( ( I X. { X } ) oF .x. Y ) Fn I /\ I e. V /\ .0. e. B ) -> ( ( ( I X. { X } ) oF .x. Y ) supp .0. ) = { x e. I | ( ( ( I X. { X } ) oF .x. Y ) ` x ) =/= .0. } )
51	47, 1, 49, 50	syl3anc 1274	. 2 |- ( ph -> ( ( ( I X. { X } ) oF .x. Y ) supp .0. ) = { x e. I | ( ( ( I X. { X } ) oF .x. Y ) ` x ) =/= .0. } )
52	4	ffnd 5511	. . 3 |- ( ph -> Y Fn I )
53		suppvalfn 6443	. . 3 |- ( ( Y Fn I /\ I e. V /\ .0. e. B ) -> ( Y supp .0. ) = { x e. I | ( Y ` x ) =/= .0. } )
54	52, 1, 49, 53	syl3anc 1274	. 2 |- ( ph -> ( Y supp .0. ) = { x e. I | ( Y ` x ) =/= .0. } )
55	38, 51, 54	3eqtr4d 2277	1 |- ( ph -> ( ( ( I X. { X } ) oF .x. Y ) supp .0. ) = ( Y supp .0. ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1398   e. wcel 2205   =/= wne 2414   A.wral 2522   {crab 2526   {csn 3691   |-> cmpt 4173   X. cxp 4749   Fn wfn 5349   -->wf 5350   ` cfv 5354  (class class class)co 6052   oFcof 6266   supp csupp 6437   Basecbs 13229   .rcmulr 13308   0gc0g 13486   Ringcrg 14157  RLRegcrlreg 14417

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-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4227  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-cnex 8220  ax-resscn 8221  ax-1cn 8222  ax-1re 8223  ax-icn 8224  ax-addcl 8225  ax-addrcl 8226  ax-mulcl 8227  ax-addcom 8229  ax-addass 8231  ax-i2m1 8234  ax-0lt1 8235  ax-0id 8237  ax-rnegex 8238  ax-pre-ltirr 8241  ax-pre-ltadd 8245

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rmo 2530  df-rab 2531  df-v 2817  df-sbc 3045  df-csb 3141  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-iun 3995  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-ima 4764  df-iota 5314  df-fun 5356  df-fn 5357  df-f 5358  df-f1 5359  df-fo 5360  df-f1o 5361  df-fv 5362  df-riota 6005  df-ov 6055  df-oprab 6056  df-mpo 6057  df-of 6268  df-supp 6438  df-pnf 8312  df-mnf 8313  df-ltxr 8315  df-inn 9240  df-2 9298  df-3 9299  df-ndx 13232  df-slot 13233  df-base 13235  df-sets 13236  df-plusg 13320  df-mulr 13321  df-0g 13488  df-mgm 13586  df-sgrp 13632  df-mnd 13647  df-grp 13733  df-mgp 14082  df-ring 14159  df-rlreg 14420

This theorem is referenced by: (None)