Step |
Hyp |
Ref |
Expression |
1 |
|
tdeglem.a |
|- A = { m e. ( NN0 ^m I ) | ( `' m " NN ) e. Fin } |
2 |
|
tdeglem.h |
|- H = ( h e. A |-> ( CCfld gsum h ) ) |
3 |
|
rexnal |
|- ( E. x e. I -. ( X ` x ) = 0 <-> -. A. x e. I ( X ` x ) = 0 ) |
4 |
|
df-ne |
|- ( ( X ` x ) =/= 0 <-> -. ( X ` x ) = 0 ) |
5 |
|
oveq2 |
|- ( h = X -> ( CCfld gsum h ) = ( CCfld gsum X ) ) |
6 |
|
ovex |
|- ( CCfld gsum X ) e. _V |
7 |
5 2 6
|
fvmpt |
|- ( X e. A -> ( H ` X ) = ( CCfld gsum X ) ) |
8 |
7
|
adantr |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( H ` X ) = ( CCfld gsum X ) ) |
9 |
1
|
psrbagf |
|- ( X e. A -> X : I --> NN0 ) |
10 |
9
|
feqmptd |
|- ( X e. A -> X = ( y e. I |-> ( X ` y ) ) ) |
11 |
10
|
adantr |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> X = ( y e. I |-> ( X ` y ) ) ) |
12 |
11
|
oveq2d |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( CCfld gsum X ) = ( CCfld gsum ( y e. I |-> ( X ` y ) ) ) ) |
13 |
|
cnfldbas |
|- CC = ( Base ` CCfld ) |
14 |
|
cnfld0 |
|- 0 = ( 0g ` CCfld ) |
15 |
|
cnfldadd |
|- + = ( +g ` CCfld ) |
16 |
|
cnring |
|- CCfld e. Ring |
17 |
|
ringcmn |
|- ( CCfld e. Ring -> CCfld e. CMnd ) |
18 |
16 17
|
mp1i |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> CCfld e. CMnd ) |
19 |
|
id |
|- ( X e. A -> X e. A ) |
20 |
9
|
ffnd |
|- ( X e. A -> X Fn I ) |
21 |
19 20
|
fndmexd |
|- ( X e. A -> I e. _V ) |
22 |
21
|
adantr |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> I e. _V ) |
23 |
9
|
ffvelrnda |
|- ( ( X e. A /\ y e. I ) -> ( X ` y ) e. NN0 ) |
24 |
23
|
nn0cnd |
|- ( ( X e. A /\ y e. I ) -> ( X ` y ) e. CC ) |
25 |
24
|
adantlr |
|- ( ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) /\ y e. I ) -> ( X ` y ) e. CC ) |
26 |
1
|
psrbagfsupp |
|- ( X e. A -> X finSupp 0 ) |
27 |
10 26
|
eqbrtrrd |
|- ( X e. A -> ( y e. I |-> ( X ` y ) ) finSupp 0 ) |
28 |
27
|
adantr |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( y e. I |-> ( X ` y ) ) finSupp 0 ) |
29 |
|
incom |
|- ( ( I \ { x } ) i^i { x } ) = ( { x } i^i ( I \ { x } ) ) |
30 |
|
disjdif |
|- ( { x } i^i ( I \ { x } ) ) = (/) |
31 |
29 30
|
eqtri |
|- ( ( I \ { x } ) i^i { x } ) = (/) |
32 |
31
|
a1i |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( ( I \ { x } ) i^i { x } ) = (/) ) |
33 |
|
difsnid |
|- ( x e. I -> ( ( I \ { x } ) u. { x } ) = I ) |
34 |
33
|
eqcomd |
|- ( x e. I -> I = ( ( I \ { x } ) u. { x } ) ) |
35 |
34
|
ad2antrl |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> I = ( ( I \ { x } ) u. { x } ) ) |
36 |
13 14 15 18 22 25 28 32 35
|
gsumsplit2 |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( CCfld gsum ( y e. I |-> ( X ` y ) ) ) = ( ( CCfld gsum ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) + ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) ) ) |
37 |
8 12 36
|
3eqtrd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( H ` X ) = ( ( CCfld gsum ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) + ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) ) ) |
38 |
|
difexg |
|- ( I e. _V -> ( I \ { x } ) e. _V ) |
39 |
22 38
|
syl |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( I \ { x } ) e. _V ) |
40 |
|
nn0subm |
|- NN0 e. ( SubMnd ` CCfld ) |
41 |
40
|
a1i |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> NN0 e. ( SubMnd ` CCfld ) ) |
42 |
9
|
adantr |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> X : I --> NN0 ) |
43 |
|
eldifi |
|- ( y e. ( I \ { x } ) -> y e. I ) |
44 |
|
ffvelrn |
|- ( ( X : I --> NN0 /\ y e. I ) -> ( X ` y ) e. NN0 ) |
45 |
42 43 44
|
syl2an |
|- ( ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) /\ y e. ( I \ { x } ) ) -> ( X ` y ) e. NN0 ) |
46 |
45
|
fmpttd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( y e. ( I \ { x } ) |-> ( X ` y ) ) : ( I \ { x } ) --> NN0 ) |
47 |
39
|
mptexd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( y e. ( I \ { x } ) |-> ( X ` y ) ) e. _V ) |
48 |
|
funmpt |
|- Fun ( y e. ( I \ { x } ) |-> ( X ` y ) ) |
49 |
48
|
a1i |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> Fun ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) |
50 |
|
funmpt |
|- Fun ( y e. I |-> ( X ` y ) ) |
51 |
|
difss |
|- ( I \ { x } ) C_ I |
52 |
|
mptss |
|- ( ( I \ { x } ) C_ I -> ( y e. ( I \ { x } ) |-> ( X ` y ) ) C_ ( y e. I |-> ( X ` y ) ) ) |
53 |
51 52
|
ax-mp |
|- ( y e. ( I \ { x } ) |-> ( X ` y ) ) C_ ( y e. I |-> ( X ` y ) ) |
54 |
22
|
mptexd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( y e. I |-> ( X ` y ) ) e. _V ) |
55 |
|
funsssuppss |
|- ( ( Fun ( y e. I |-> ( X ` y ) ) /\ ( y e. ( I \ { x } ) |-> ( X ` y ) ) C_ ( y e. I |-> ( X ` y ) ) /\ ( y e. I |-> ( X ` y ) ) e. _V ) -> ( ( y e. ( I \ { x } ) |-> ( X ` y ) ) supp 0 ) C_ ( ( y e. I |-> ( X ` y ) ) supp 0 ) ) |
56 |
50 53 54 55
|
mp3an12i |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( ( y e. ( I \ { x } ) |-> ( X ` y ) ) supp 0 ) C_ ( ( y e. I |-> ( X ` y ) ) supp 0 ) ) |
57 |
|
fsuppsssupp |
|- ( ( ( ( y e. ( I \ { x } ) |-> ( X ` y ) ) e. _V /\ Fun ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) /\ ( ( y e. I |-> ( X ` y ) ) finSupp 0 /\ ( ( y e. ( I \ { x } ) |-> ( X ` y ) ) supp 0 ) C_ ( ( y e. I |-> ( X ` y ) ) supp 0 ) ) ) -> ( y e. ( I \ { x } ) |-> ( X ` y ) ) finSupp 0 ) |
58 |
47 49 28 56 57
|
syl22anc |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( y e. ( I \ { x } ) |-> ( X ` y ) ) finSupp 0 ) |
59 |
14 18 39 41 46 58
|
gsumsubmcl |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( CCfld gsum ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) e. NN0 ) |
60 |
|
ringmnd |
|- ( CCfld e. Ring -> CCfld e. Mnd ) |
61 |
16 60
|
ax-mp |
|- CCfld e. Mnd |
62 |
|
simprl |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> x e. I ) |
63 |
42 62
|
ffvelrnd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( X ` x ) e. NN0 ) |
64 |
63
|
nn0cnd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( X ` x ) e. CC ) |
65 |
|
fveq2 |
|- ( y = x -> ( X ` y ) = ( X ` x ) ) |
66 |
13 65
|
gsumsn |
|- ( ( CCfld e. Mnd /\ x e. I /\ ( X ` x ) e. CC ) -> ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) = ( X ` x ) ) |
67 |
61 62 64 66
|
mp3an2i |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) = ( X ` x ) ) |
68 |
|
elnn0 |
|- ( ( X ` x ) e. NN0 <-> ( ( X ` x ) e. NN \/ ( X ` x ) = 0 ) ) |
69 |
63 68
|
sylib |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( ( X ` x ) e. NN \/ ( X ` x ) = 0 ) ) |
70 |
|
neneq |
|- ( ( X ` x ) =/= 0 -> -. ( X ` x ) = 0 ) |
71 |
70
|
ad2antll |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> -. ( X ` x ) = 0 ) |
72 |
69 71
|
olcnd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( X ` x ) e. NN ) |
73 |
67 72
|
eqeltrd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) e. NN ) |
74 |
|
nn0nnaddcl |
|- ( ( ( CCfld gsum ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) e. NN0 /\ ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) e. NN ) -> ( ( CCfld gsum ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) + ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) ) e. NN ) |
75 |
59 73 74
|
syl2anc |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( ( CCfld gsum ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) + ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) ) e. NN ) |
76 |
75
|
nnne0d |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( ( CCfld gsum ( y e. ( I \ { x } ) |-> ( X ` y ) ) ) + ( CCfld gsum ( y e. { x } |-> ( X ` y ) ) ) ) =/= 0 ) |
77 |
37 76
|
eqnetrd |
|- ( ( X e. A /\ ( x e. I /\ ( X ` x ) =/= 0 ) ) -> ( H ` X ) =/= 0 ) |
78 |
77
|
expr |
|- ( ( X e. A /\ x e. I ) -> ( ( X ` x ) =/= 0 -> ( H ` X ) =/= 0 ) ) |
79 |
4 78
|
syl5bir |
|- ( ( X e. A /\ x e. I ) -> ( -. ( X ` x ) = 0 -> ( H ` X ) =/= 0 ) ) |
80 |
79
|
rexlimdva |
|- ( X e. A -> ( E. x e. I -. ( X ` x ) = 0 -> ( H ` X ) =/= 0 ) ) |
81 |
3 80
|
syl5bir |
|- ( X e. A -> ( -. A. x e. I ( X ` x ) = 0 -> ( H ` X ) =/= 0 ) ) |
82 |
81
|
necon4bd |
|- ( X e. A -> ( ( H ` X ) = 0 -> A. x e. I ( X ` x ) = 0 ) ) |
83 |
|
c0ex |
|- 0 e. _V |
84 |
|
fnconstg |
|- ( 0 e. _V -> ( I X. { 0 } ) Fn I ) |
85 |
83 84
|
mp1i |
|- ( X e. A -> ( I X. { 0 } ) Fn I ) |
86 |
|
eqfnfv |
|- ( ( X Fn I /\ ( I X. { 0 } ) Fn I ) -> ( X = ( I X. { 0 } ) <-> A. x e. I ( X ` x ) = ( ( I X. { 0 } ) ` x ) ) ) |
87 |
20 85 86
|
syl2anc |
|- ( X e. A -> ( X = ( I X. { 0 } ) <-> A. x e. I ( X ` x ) = ( ( I X. { 0 } ) ` x ) ) ) |
88 |
83
|
fvconst2 |
|- ( x e. I -> ( ( I X. { 0 } ) ` x ) = 0 ) |
89 |
88
|
eqeq2d |
|- ( x e. I -> ( ( X ` x ) = ( ( I X. { 0 } ) ` x ) <-> ( X ` x ) = 0 ) ) |
90 |
89
|
ralbiia |
|- ( A. x e. I ( X ` x ) = ( ( I X. { 0 } ) ` x ) <-> A. x e. I ( X ` x ) = 0 ) |
91 |
87 90
|
bitrdi |
|- ( X e. A -> ( X = ( I X. { 0 } ) <-> A. x e. I ( X ` x ) = 0 ) ) |
92 |
82 91
|
sylibrd |
|- ( X e. A -> ( ( H ` X ) = 0 -> X = ( I X. { 0 } ) ) ) |
93 |
1
|
psrbag0 |
|- ( I e. _V -> ( I X. { 0 } ) e. A ) |
94 |
|
oveq2 |
|- ( h = ( I X. { 0 } ) -> ( CCfld gsum h ) = ( CCfld gsum ( I X. { 0 } ) ) ) |
95 |
|
ovex |
|- ( CCfld gsum ( I X. { 0 } ) ) e. _V |
96 |
94 2 95
|
fvmpt |
|- ( ( I X. { 0 } ) e. A -> ( H ` ( I X. { 0 } ) ) = ( CCfld gsum ( I X. { 0 } ) ) ) |
97 |
21 93 96
|
3syl |
|- ( X e. A -> ( H ` ( I X. { 0 } ) ) = ( CCfld gsum ( I X. { 0 } ) ) ) |
98 |
|
fconstmpt |
|- ( I X. { 0 } ) = ( x e. I |-> 0 ) |
99 |
98
|
oveq2i |
|- ( CCfld gsum ( I X. { 0 } ) ) = ( CCfld gsum ( x e. I |-> 0 ) ) |
100 |
14
|
gsumz |
|- ( ( CCfld e. Mnd /\ I e. _V ) -> ( CCfld gsum ( x e. I |-> 0 ) ) = 0 ) |
101 |
61 21 100
|
sylancr |
|- ( X e. A -> ( CCfld gsum ( x e. I |-> 0 ) ) = 0 ) |
102 |
99 101
|
syl5eq |
|- ( X e. A -> ( CCfld gsum ( I X. { 0 } ) ) = 0 ) |
103 |
97 102
|
eqtrd |
|- ( X e. A -> ( H ` ( I X. { 0 } ) ) = 0 ) |
104 |
|
fveqeq2 |
|- ( X = ( I X. { 0 } ) -> ( ( H ` X ) = 0 <-> ( H ` ( I X. { 0 } ) ) = 0 ) ) |
105 |
103 104
|
syl5ibrcom |
|- ( X e. A -> ( X = ( I X. { 0 } ) -> ( H ` X ) = 0 ) ) |
106 |
92 105
|
impbid |
|- ( X e. A -> ( ( H ` X ) = 0 <-> X = ( I X. { 0 } ) ) ) |