Theorem m1detdiag 19670

Description: The determinant of a 1-dimensional matrix equals its (single) entry. (Contributed by AV, 6-Aug-2019.)

Hypotheses

Ref	Expression
mdetdiag.d	|- D = ( N maDet R )
mdetdiag.a	|- A = ( N Mat R )
mdetdiag.b	|- B = ( Base ` A )

Assertion

Ref	Expression
m1detdiag	|- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( D ` M ) = ( I M I ) )

Proof of Theorem m1detdiag

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

Step	Hyp	Ref	Expression
1		mdetdiag.d	. . . 4 |- D = ( N maDet R )
2		mdetdiag.a	. . . 4 |- A = ( N Mat R )
3		mdetdiag.b	. . . 4 |- B = ( Base ` A )
4		eqid 2461	. . . 4 |- ( Base ` ( SymGrp ` N ) ) = ( Base ` ( SymGrp ` N ) )
5		eqid 2461	. . . 4 |- ( ZRHom ` R ) = ( ZRHom ` R )
6		eqid 2461	. . . 4 |- (pmSgn ` N ) = (pmSgn ` N )
7		eqid 2461	. . . 4 |- ( .r ` R ) = ( .r ` R )
8		eqid 2461	. . . 4 |- (mulGrp ` R ) = (mulGrp ` R )
9	1, 2, 3, 4, 5, 6, 7, 8	mdetleib 19660	. . 3 |- ( M e. B -> ( D ` M ) = ( R gsumg ( p e. ( Base ` ( SymGrp ` N ) ) |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) ) )
10	9	3ad2ant3 1037	. 2 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( D ` M ) = ( R gsumg ( p e. ( Base ` ( SymGrp ` N ) ) |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) ) )
11		fveq2 5887	. . . . . . . . 9 |- ( N = { I } -> ( SymGrp ` N ) = ( SymGrp ` { I } ) )
12	11	fveq2d 5891	. . . . . . . 8 |- ( N = { I } -> ( Base ` ( SymGrp ` N ) ) = ( Base ` ( SymGrp ` { I } ) ) )
13	12	adantr 471	. . . . . . 7 |- ( ( N = { I } /\ I e. V ) -> ( Base ` ( SymGrp ` N ) ) = ( Base ` ( SymGrp ` { I } ) ) )
14	13	3ad2ant2 1036	. . . . . 6 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( Base ` ( SymGrp ` N ) ) = ( Base ` ( SymGrp ` { I } ) ) )
15		simp2r 1041	. . . . . . 7 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> I e. V )
16		eqid 2461	. . . . . . . 8 |- ( SymGrp ` { I } ) = ( SymGrp ` { I } )
17		eqid 2461	. . . . . . . 8 |- ( Base ` ( SymGrp ` { I } ) ) = ( Base ` ( SymGrp ` { I } ) )
18		eqid 2461	. . . . . . . 8 |- { I } = { I }
19	16, 17, 18	symg1bas 17085	. . . . . . 7 |- ( I e. V -> ( Base ` ( SymGrp ` { I } ) ) = { { <. I , I >. } } )
20	15, 19	syl 17	. . . . . 6 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( Base ` ( SymGrp ` { I } ) ) = { { <. I , I >. } } )
21	14, 20	eqtrd 2495	. . . . 5 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( Base ` ( SymGrp ` N ) ) = { { <. I , I >. } } )
22	21	mpteq1d 4497	. . . 4 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( p e. ( Base ` ( SymGrp ` N ) ) |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) = ( p e. { { <. I , I >. } } |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) )
23		snex 4654	. . . . . 6 |- { <. I , I >. } e. _V
24	23	a1i 11	. . . . 5 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> { <. I , I >. } e. _V )
25		ovex 6342	. . . . 5 |- ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) e. _V
26		fveq2 5887	. . . . . . . 8 |- ( p = { <. I , I >. } -> ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) = ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) )
27		fveq1 5886	. . . . . . . . . . 11 |- ( p = { <. I , I >. } -> ( p ` x ) = ( { <. I , I >. } ` x ) )
28	27	oveq1d 6329	. . . . . . . . . 10 |- ( p = { <. I , I >. } -> ( ( p ` x ) M x ) = ( ( { <. I , I >. } ` x ) M x ) )
29	28	mpteq2dv 4503	. . . . . . . . 9 |- ( p = { <. I , I >. } -> ( x e. N |-> ( ( p ` x ) M x ) ) = ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) )
30	29	oveq2d 6330	. . . . . . . 8 |- ( p = { <. I , I >. } -> ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) = ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) )
31	26, 30	oveq12d 6332	. . . . . . 7 |- ( p = { <. I , I >. } -> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) = ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) )
32	31	fmptsng 6108	. . . . . 6 |- ( ( { <. I , I >. } e. _V /\ ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) e. _V ) -> { <. { <. I , I >. } , ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) >. } = ( p e. { { <. I , I >. } } |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) )
33	32	eqcomd 2467	. . . . 5 |- ( ( { <. I , I >. } e. _V /\ ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) e. _V ) -> ( p e. { { <. I , I >. } } |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) = { <. { <. I , I >. } , ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) >. } )
34	24, 25, 33	sylancl 673	. . . 4 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( p e. { { <. I , I >. } } |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) = { <. { <. I , I >. } , ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) >. } )
35		eqid 2461	. . . . . . . . . . . . 13 |- ( SymGrp ` N ) = ( SymGrp ` N )
36		eqid 2461	. . . . . . . . . . . . 13 |- { b e. ( Base ` ( SymGrp ` N ) ) | dom ( b \ _I ) e. Fin } = { b e. ( Base ` ( SymGrp ` N ) ) | dom ( b \ _I ) e. Fin }
37	35, 4, 36, 6	psgnfn 17190	. . . . . . . . . . . 12 |- (pmSgn ` N ) Fn { b e. ( Base ` ( SymGrp ` N ) ) | dom ( b \ _I ) e. Fin }
38	19	adantl 472	. . . . . . . . . . . . . . . . 17 |- ( ( N = { I } /\ I e. V ) -> ( Base ` ( SymGrp ` { I } ) ) = { { <. I , I >. } } )
39	13, 38	eqtrd 2495	. . . . . . . . . . . . . . . 16 |- ( ( N = { I } /\ I e. V ) -> ( Base ` ( SymGrp ` N ) ) = { { <. I , I >. } } )
40	39	3ad2ant2 1036	. . . . . . . . . . . . . . 15 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( Base ` ( SymGrp ` N ) ) = { { <. I , I >. } } )
41		rabeq 3049	. . . . . . . . . . . . . . 15 |- ( ( Base ` ( SymGrp ` N ) ) = { { <. I , I >. } } -> { b e. ( Base ` ( SymGrp ` N ) ) | dom ( b \ _I ) e. Fin } = { b e. { { <. I , I >. } } | dom ( b \ _I ) e. Fin } )
42	40, 41	syl 17	. . . . . . . . . . . . . 14 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> { b e. ( Base ` ( SymGrp ` N ) ) | dom ( b \ _I ) e. Fin } = { b e. { { <. I , I >. } } | dom ( b \ _I ) e. Fin } )
43		difeq1 3555	. . . . . . . . . . . . . . . . . 18 |- ( b = { <. I , I >. } -> ( b \ _I ) = ( { <. I , I >. } \ _I ) )
44	43	dmeqd 5055	. . . . . . . . . . . . . . . . 17 |- ( b = { <. I , I >. } -> dom ( b \ _I ) = dom ( { <. I , I >. } \ _I ) )
45	44	eleq1d 2523	. . . . . . . . . . . . . . . 16 |- ( b = { <. I , I >. } -> ( dom ( b \ _I ) e. Fin <-> dom ( { <. I , I >. } \ _I ) e. Fin ) )
46	45	rabsnif 4053	. . . . . . . . . . . . . . 15 |- { b e. { { <. I , I >. } } | dom ( b \ _I ) e. Fin } = if ( dom ( { <. I , I >. } \ _I ) e. Fin , { { <. I , I >. } } , (/) )
47	46	a1i 11	. . . . . . . . . . . . . 14 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> { b e. { { <. I , I >. } } | dom ( b \ _I ) e. Fin } = if ( dom ( { <. I , I >. } \ _I ) e. Fin , { { <. I , I >. } } , (/) ) )
48		restidsing 5179	. . . . . . . . . . . . . . . . . . . 20 |- ( _I |` { I } ) = ( { I } X. { I } )
49		xpsng 6088	. . . . . . . . . . . . . . . . . . . . 21 |- ( ( I e. V /\ I e. V ) -> ( { I } X. { I } ) = { <. I , I >. } )
50	49	anidms 655	. . . . . . . . . . . . . . . . . . . 20 |- ( I e. V -> ( { I } X. { I } ) = { <. I , I >. } )
51	48, 50	syl5req 2508	. . . . . . . . . . . . . . . . . . 19 |- ( I e. V -> { <. I , I >. } = ( _I |` { I } ) )
52		fnsng 5647	. . . . . . . . . . . . . . . . . . . . 21 |- ( ( I e. V /\ I e. V ) -> { <. I , I >. } Fn { I } )
53	52	anidms 655	. . . . . . . . . . . . . . . . . . . 20 |- ( I e. V -> { <. I , I >. } Fn { I } )
54		fnnfpeq0 6118	. . . . . . . . . . . . . . . . . . . 20 |- ( { <. I , I >. } Fn { I } -> ( dom ( { <. I , I >. } \ _I ) = (/) <-> { <. I , I >. } = ( _I |` { I } ) ) )
55	53, 54	syl 17	. . . . . . . . . . . . . . . . . . 19 |- ( I e. V -> ( dom ( { <. I , I >. } \ _I ) = (/) <-> { <. I , I >. } = ( _I |` { I } ) ) )
56	51, 55	mpbird 240	. . . . . . . . . . . . . . . . . 18 |- ( I e. V -> dom ( { <. I , I >. } \ _I ) = (/) )
57		0fin 7824	. . . . . . . . . . . . . . . . . 18 |- (/) e. Fin
58	56, 57	syl6eqel 2547	. . . . . . . . . . . . . . . . 17 |- ( I e. V -> dom ( { <. I , I >. } \ _I ) e. Fin )
59	58	adantl 472	. . . . . . . . . . . . . . . 16 |- ( ( N = { I } /\ I e. V ) -> dom ( { <. I , I >. } \ _I ) e. Fin )
60	59	3ad2ant2 1036	. . . . . . . . . . . . . . 15 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> dom ( { <. I , I >. } \ _I ) e. Fin )
61	60	iftrued 3900	. . . . . . . . . . . . . 14 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> if ( dom ( { <. I , I >. } \ _I ) e. Fin , { { <. I , I >. } } , (/) ) = { { <. I , I >. } } )
62	42, 47, 61	3eqtrrd 2500	. . . . . . . . . . . . 13 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> { { <. I , I >. } } = { b e. ( Base ` ( SymGrp ` N ) ) | dom ( b \ _I ) e. Fin } )
63	62	fneq2d 5688	. . . . . . . . . . . 12 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( (pmSgn ` N ) Fn { { <. I , I >. } } <-> (pmSgn ` N ) Fn { b e. ( Base ` ( SymGrp ` N ) ) | dom ( b \ _I ) e. Fin } ) )
64	37, 63	mpbiri 241	. . . . . . . . . . 11 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> (pmSgn ` N ) Fn { { <. I , I >. } } )
65	23	snid 4007	. . . . . . . . . . 11 |- { <. I , I >. } e. { { <. I , I >. } }
66		fvco2 5962	. . . . . . . . . . 11 |- ( ( (pmSgn ` N ) Fn { { <. I , I >. } } /\ { <. I , I >. } e. { { <. I , I >. } } ) -> ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) = ( ( ZRHom ` R ) ` ( (pmSgn ` N ) ` { <. I , I >. } ) ) )
67	64, 65, 66	sylancl 673	. . . . . . . . . 10 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) = ( ( ZRHom ` R ) ` ( (pmSgn ` N ) ` { <. I , I >. } ) ) )
68		fveq2 5887	. . . . . . . . . . . . . . 15 |- ( N = { I } -> (pmSgn ` N ) = (pmSgn ` { I } ) )
69	68	adantr 471	. . . . . . . . . . . . . 14 |- ( ( N = { I } /\ I e. V ) -> (pmSgn ` N ) = (pmSgn ` { I } ) )
70	69	3ad2ant2 1036	. . . . . . . . . . . . 13 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> (pmSgn ` N ) = (pmSgn ` { I } ) )
71	70	fveq1d 5889	. . . . . . . . . . . 12 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( (pmSgn ` N ) ` { <. I , I >. } ) = ( (pmSgn ` { I } ) ` { <. I , I >. } ) )
72		snidg 4005	. . . . . . . . . . . . . . . . . 18 |- ( { <. I , I >. } e. _V -> { <. I , I >. } e. { { <. I , I >. } } )
73	23, 72	mp1i 13	. . . . . . . . . . . . . . . . 17 |- ( I e. V -> { <. I , I >. } e. { { <. I , I >. } } )
74	73, 19	eleqtrrd 2542	. . . . . . . . . . . . . . . 16 |- ( I e. V -> { <. I , I >. } e. ( Base ` ( SymGrp ` { I } ) ) )
75	74	ancli 558	. . . . . . . . . . . . . . 15 |- ( I e. V -> ( I e. V /\ { <. I , I >. } e. ( Base ` ( SymGrp ` { I } ) ) ) )
76	75	adantl 472	. . . . . . . . . . . . . 14 |- ( ( N = { I } /\ I e. V ) -> ( I e. V /\ { <. I , I >. } e. ( Base ` ( SymGrp ` { I } ) ) ) )
77	76	3ad2ant2 1036	. . . . . . . . . . . . 13 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( I e. V /\ { <. I , I >. } e. ( Base ` ( SymGrp ` { I } ) ) ) )
78		eqid 2461	. . . . . . . . . . . . . 14 |- (pmSgn ` { I } ) = (pmSgn ` { I } )
79	18, 16, 17, 78	psgnsn 17209	. . . . . . . . . . . . 13 |- ( ( I e. V /\ { <. I , I >. } e. ( Base ` ( SymGrp ` { I } ) ) ) -> ( (pmSgn ` { I } ) ` { <. I , I >. } ) = 1 )
80	77, 79	syl 17	. . . . . . . . . . . 12 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( (pmSgn ` { I } ) ` { <. I , I >. } ) = 1 )
81	71, 80	eqtrd 2495	. . . . . . . . . . 11 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( (pmSgn ` N ) ` { <. I , I >. } ) = 1 )
82	81	fveq2d 5891	. . . . . . . . . 10 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( ( ZRHom ` R ) ` ( (pmSgn ` N ) ` { <. I , I >. } ) ) = ( ( ZRHom ` R ) ` 1 ) )
83		crngring 17839	. . . . . . . . . . . 12 |- ( R e. CRing -> R e. Ring )
84	83	3ad2ant1 1035	. . . . . . . . . . 11 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> R e. Ring )
85		eqid 2461	. . . . . . . . . . . 12 |- ( 1r ` R ) = ( 1r ` R )
86	5, 85	zrh1 19132	. . . . . . . . . . 11 |- ( R e. Ring -> ( ( ZRHom ` R ) ` 1 ) = ( 1r ` R ) )
87	84, 86	syl 17	. . . . . . . . . 10 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( ( ZRHom ` R ) ` 1 ) = ( 1r ` R ) )
88	67, 82, 87	3eqtrd 2499	. . . . . . . . 9 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) = ( 1r ` R ) )
89		simp2l 1040	. . . . . . . . . . . 12 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> N = { I } )
90	89	mpteq1d 4497	. . . . . . . . . . 11 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) = ( x e. { I } |-> ( ( { <. I , I >. } ` x ) M x ) ) )
91	90	oveq2d 6330	. . . . . . . . . 10 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) = ( (mulGrp ` R ) gsumg ( x e. { I } |-> ( ( { <. I , I >. } ` x ) M x ) ) ) )
92	8	ringmgp 17834	. . . . . . . . . . . . 13 |- ( R e. Ring -> (mulGrp ` R ) e. Mnd )
93	83, 92	syl 17	. . . . . . . . . . . 12 |- ( R e. CRing -> (mulGrp ` R ) e. Mnd )
94	93	3ad2ant1 1035	. . . . . . . . . . 11 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> (mulGrp ` R ) e. Mnd )
95		snidg 4005	. . . . . . . . . . . . . . . . 17 |- ( I e. V -> I e. { I } )
96	95	adantl 472	. . . . . . . . . . . . . . . 16 |- ( ( N = { I } /\ I e. V ) -> I e. { I } )
97		eleq2 2528	. . . . . . . . . . . . . . . . 17 |- ( N = { I } -> ( I e. N <-> I e. { I } ) )
98	97	adantr 471	. . . . . . . . . . . . . . . 16 |- ( ( N = { I } /\ I e. V ) -> ( I e. N <-> I e. { I } ) )
99	96, 98	mpbird 240	. . . . . . . . . . . . . . 15 |- ( ( N = { I } /\ I e. V ) -> I e. N )
100	3	eleq2i 2531	. . . . . . . . . . . . . . . 16 |- ( M e. B <-> M e. ( Base ` A ) )
101	100	biimpi 199	. . . . . . . . . . . . . . 15 |- ( M e. B -> M e. ( Base ` A ) )
102		simpl 463	. . . . . . . . . . . . . . . 16 |- ( ( I e. N /\ M e. ( Base ` A ) ) -> I e. N )
103		simpr 467	. . . . . . . . . . . . . . . 16 |- ( ( I e. N /\ M e. ( Base ` A ) ) -> M e. ( Base ` A ) )
104	102, 102, 103	3jca 1194	. . . . . . . . . . . . . . 15 |- ( ( I e. N /\ M e. ( Base ` A ) ) -> ( I e. N /\ I e. N /\ M e. ( Base ` A ) ) )
105	99, 101, 104	syl2an 484	. . . . . . . . . . . . . 14 |- ( ( ( N = { I } /\ I e. V ) /\ M e. B ) -> ( I e. N /\ I e. N /\ M e. ( Base ` A ) ) )
106	105	3adant1 1032	. . . . . . . . . . . . 13 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( I e. N /\ I e. N /\ M e. ( Base ` A ) ) )
107		eqid 2461	. . . . . . . . . . . . . 14 |- ( Base ` R ) = ( Base ` R )
108	2, 107	matecl 19498	. . . . . . . . . . . . 13 |- ( ( I e. N /\ I e. N /\ M e. ( Base ` A ) ) -> ( I M I ) e. ( Base ` R ) )
109	106, 108	syl 17	. . . . . . . . . . . 12 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( I M I ) e. ( Base ` R ) )
110	8, 107	mgpbas 17777	. . . . . . . . . . . 12 |- ( Base ` R ) = ( Base ` (mulGrp ` R ) )
111	109, 110	syl6eleq 2549	. . . . . . . . . . 11 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( I M I ) e. ( Base ` (mulGrp ` R ) ) )
112		eqid 2461	. . . . . . . . . . . 12 |- ( Base ` (mulGrp ` R ) ) = ( Base ` (mulGrp ` R ) )
113		fveq2 5887	. . . . . . . . . . . . . 14 |- ( x = I -> ( { <. I , I >. } ` x ) = ( { <. I , I >. } ` I ) )
114		eqvisset 3064	. . . . . . . . . . . . . . 15 |- ( x = I -> I e. _V )
115		fvsng 6121	. . . . . . . . . . . . . . 15 |- ( ( I e. _V /\ I e. _V ) -> ( { <. I , I >. } ` I ) = I )
116	114, 114, 115	syl2anc 671	. . . . . . . . . . . . . 14 |- ( x = I -> ( { <. I , I >. } ` I ) = I )
117	113, 116	eqtrd 2495	. . . . . . . . . . . . 13 |- ( x = I -> ( { <. I , I >. } ` x ) = I )
118		id 22	. . . . . . . . . . . . 13 |- ( x = I -> x = I )
119	117, 118	oveq12d 6332	. . . . . . . . . . . 12 |- ( x = I -> ( ( { <. I , I >. } ` x ) M x ) = ( I M I ) )
120	112, 119	gsumsn 17635	. . . . . . . . . . 11 |- ( ( (mulGrp ` R ) e. Mnd /\ I e. V /\ ( I M I ) e. ( Base ` (mulGrp ` R ) ) ) -> ( (mulGrp ` R ) gsumg ( x e. { I } |-> ( ( { <. I , I >. } ` x ) M x ) ) ) = ( I M I ) )
121	94, 15, 111, 120	syl3anc 1276	. . . . . . . . . 10 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( (mulGrp ` R ) gsumg ( x e. { I } |-> ( ( { <. I , I >. } ` x ) M x ) ) ) = ( I M I ) )
122	91, 121	eqtrd 2495	. . . . . . . . 9 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) = ( I M I ) )
123	88, 122	oveq12d 6332	. . . . . . . 8 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) = ( ( 1r ` R ) ( .r ` R ) ( I M I ) ) )
124	99	3ad2ant2 1036	. . . . . . . . . 10 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> I e. N )
125	101	3ad2ant3 1037	. . . . . . . . . 10 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> M e. ( Base ` A ) )
126	124, 124, 125, 108	syl3anc 1276	. . . . . . . . 9 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( I M I ) e. ( Base ` R ) )
127	107, 7, 85	ringlidm 17852	. . . . . . . . 9 |- ( ( R e. Ring /\ ( I M I ) e. ( Base ` R ) ) -> ( ( 1r ` R ) ( .r ` R ) ( I M I ) ) = ( I M I ) )
128	84, 126, 127	syl2anc 671	. . . . . . . 8 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( ( 1r ` R ) ( .r ` R ) ( I M I ) ) = ( I M I ) )
129	123, 128	eqtrd 2495	. . . . . . 7 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) = ( I M I ) )
130	129	opeq2d 4186	. . . . . 6 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> <. { <. I , I >. } , ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) >. = <. { <. I , I >. } , ( I M I ) >. )
131	130	sneqd 3991	. . . . 5 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> { <. { <. I , I >. } , ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) >. } = { <. { <. I , I >. } , ( I M I ) >. } )
132		ovex 6342	. . . . . 6 |- ( I M I ) e. _V
133		eqidd 2462	. . . . . . 7 |- ( y = { <. I , I >. } -> ( I M I ) = ( I M I ) )
134	133	fmptsng 6108	. . . . . 6 |- ( ( { <. I , I >. } e. _V /\ ( I M I ) e. _V ) -> { <. { <. I , I >. } , ( I M I ) >. } = ( y e. { { <. I , I >. } } |-> ( I M I ) ) )
135	24, 132, 134	sylancl 673	. . . . 5 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> { <. { <. I , I >. } , ( I M I ) >. } = ( y e. { { <. I , I >. } } |-> ( I M I ) ) )
136	131, 135	eqtrd 2495	. . . 4 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> { <. { <. I , I >. } , ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` { <. I , I >. } ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( { <. I , I >. } ` x ) M x ) ) ) ) >. } = ( y e. { { <. I , I >. } } |-> ( I M I ) ) )
137	22, 34, 136	3eqtrd 2499	. . 3 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( p e. ( Base ` ( SymGrp ` N ) ) |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) = ( y e. { { <. I , I >. } } |-> ( I M I ) ) )
138	137	oveq2d 6330	. 2 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( R gsumg ( p e. ( Base ` ( SymGrp ` N ) ) |-> ( ( ( ( ZRHom ` R ) o. (pmSgn ` N ) ) ` p ) ( .r ` R ) ( (mulGrp ` R ) gsumg ( x e. N |-> ( ( p ` x ) M x ) ) ) ) ) ) = ( R gsumg ( y e. { { <. I , I >. } } |-> ( I M I ) ) ) )
139		ringmnd 17837	. . . . 5 |- ( R e. Ring -> R e. Mnd )
140	83, 139	syl 17	. . . 4 |- ( R e. CRing -> R e. Mnd )
141	140	3ad2ant1 1035	. . 3 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> R e. Mnd )
142	107, 133	gsumsn 17635	. . 3 |- ( ( R e. Mnd /\ { <. I , I >. } e. _V /\ ( I M I ) e. ( Base ` R ) ) -> ( R gsumg ( y e. { { <. I , I >. } } |-> ( I M I ) ) ) = ( I M I ) )
143	141, 24, 126, 142	syl3anc 1276	. 2 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( R gsumg ( y e. { { <. I , I >. } } |-> ( I M I ) ) ) = ( I M I ) )
144	10, 138, 143	3eqtrd 2499	1 |- ( ( R e. CRing /\ ( N = { I } /\ I e. V ) /\ M e. B ) -> ( D ` M ) = ( I M I ) )

Syntax hints:   -> wi 4   <-> wb 189   /\ wa 375   /\ w3a 991   = wceq 1454   e. wcel 1897   {crab 2752   _Vcvv 3056   \ cdif 3412   (/)c0 3742   ifcif 3892   {csn 3979   <.cop 3985   |-> cmpt 4474   _I cid 4762   X. cxp 4850   dom cdm 4852   |` cres 4854   o. ccom 4856   Fn wfn 5595   ` cfv 5600  (class class class)co 6314   Fincfn 7594   1c1 9565   Basecbs 15169   .rcmulr 15239   gsum_g cgsu 15387   Mndcmnd 16583   SymGrpcsymg 17066  pmSgncpsgn 17178  mulGrpcmgp 17771   1rcur 17783   Ringcrg 17828   CRingccrg 17829   ZRHomczrh 19119   Mat cmat 19480   maDet cmdat 19657

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1679  ax-4 1692  ax-5 1768  ax-6 1815  ax-7 1861  ax-8 1899  ax-9 1906  ax-10 1925  ax-11 1930  ax-12 1943  ax-13 2101  ax-ext 2441  ax-rep 4528  ax-sep 4538  ax-nul 4547  ax-pow 4594  ax-pr 4652  ax-un 6609  ax-inf2 8171  ax-cnex 9620  ax-resscn 9621  ax-1cn 9622  ax-icn 9623  ax-addcl 9624  ax-addrcl 9625  ax-mulcl 9626  ax-mulrcl 9627  ax-mulcom 9628  ax-addass 9629  ax-mulass 9630  ax-distr 9631  ax-i2m1 9632  ax-1ne0 9633  ax-1rid 9634  ax-rnegex 9635  ax-rrecex 9636  ax-cnre 9637  ax-pre-lttri 9638  ax-pre-lttrn 9639  ax-pre-ltadd 9640  ax-pre-mulgt0 9641  ax-addf 9643  ax-mulf 9644

This theorem depends on definitions:  df-bi 190  df-or 376  df-an 377  df-3or 992  df-3an 993  df-xor 1416  df-tru 1457  df-ex 1674  df-nf 1678  df-sb 1808  df-eu 2313  df-mo 2314  df-clab 2448  df-cleq 2454  df-clel 2457  df-nfc 2591  df-ne 2634  df-nel 2635  df-ral 2753  df-rex 2754  df-reu 2755  df-rmo 2756  df-rab 2757  df-v 3058  df-sbc 3279  df-csb 3375  df-dif 3418  df-un 3420  df-in 3422  df-ss 3429  df-pss 3431  df-nul 3743  df-if 3893  df-pw 3964  df-sn 3980  df-pr 3982  df-tp 3984  df-op 3986  df-ot 3988  df-uni 4212  df-int 4248  df-iun 4293  df-iin 4294  df-br 4416  df-opab 4475  df-mpt 4476  df-tr 4511  df-eprel 4763  df-id 4767  df-po 4773  df-so 4774  df-fr 4811  df-se 4812  df-we 4813  df-xp 4858  df-rel 4859  df-cnv 4860  df-co 4861  df-dm 4862  df-rn 4863  df-res 4864  df-ima 4865  df-pred 5398  df-ord 5444  df-on 5445  df-lim 5446  df-suc 5447  df-iota 5564  df-fun 5602  df-fn 5603  df-f 5604  df-f1 5605  df-fo 5606  df-f1o 5607  df-fv 5608  df-isom 5609  df-riota 6276  df-ov 6317  df-oprab 6318  df-mpt2 6319  df-om 6719  df-1st 6819  df-2nd 6820  df-supp 6941  df-tpos 6998  df-wrecs 7053  df-recs 7115  df-rdg 7153  df-1o 7207  df-2o 7208  df-oadd 7211  df-er 7388  df-map 7499  df-ixp 7548  df-en 7595  df-dom 7596  df-sdom 7597  df-fin 7598  df-fsupp 7909  df-sup 7981  df-oi 8050  df-card 8398  df-cda 8623  df-pnf 9702  df-mnf 9703  df-xr 9704  df-ltxr 9705  df-le 9706  df-sub 9887  df-neg 9888  df-div 10297  df-nn 10637  df-2 10695  df-3 10696  df-4 10697  df-5 10698  df-6 10699  df-7 10700  df-8 10701  df-9 10702  df-10 10703  df-n0 10898  df-z 10966  df-dec 11080  df-uz 11188  df-rp 11331  df-fz 11813  df-fzo 11946  df-seq 12245  df-exp 12304  df-hash 12547  df-word 12696  df-lsw 12697  df-concat 12698  df-s1 12699  df-substr 12700  df-splice 12701  df-reverse 12702  df-s2 12980  df-struct 15171  df-ndx 15172  df-slot 15173  df-base 15174  df-sets 15175  df-ress 15176  df-plusg 15251  df-mulr 15252  df-starv 15253  df-sca 15254  df-vsca 15255  df-ip 15256  df-tset 15257  df-ple 15258  df-ds 15260  df-unif 15261  df-hom 15262  df-cco 15263  df-0g 15388  df-gsum 15389  df-prds 15394  df-pws 15396  df-mre 15540  df-mrc 15541  df-acs 15543  df-mgm 16536  df-sgrp 16575  df-mnd 16585  df-mhm 16630  df-submnd 16631  df-grp 16721  df-minusg 16722  df-mulg 16724  df-subg 16862  df-ghm 16929  df-gim 16971  df-cntz 17019  df-oppg 17045  df-symg 17067  df-pmtr 17131  df-psgn 17180  df-cmn 17480  df-mgp 17772  df-ur 17784  df-ring 17830  df-cring 17831  df-rnghom 17991  df-subrg 18054  df-sra 18443  df-rgmod 18444  df-cnfld 19019  df-zring 19088  df-zrh 19123  df-dsmm 19343  df-frlm 19358  df-mat 19481  df-mdet 19658

This theorem is referenced by:  chpmat1d  19908