| Step |
Hyp |
Ref |
Expression |
| 1 |
|
rrx2line.i |
|- I = ( 0 ..^ 2 ) |
| 2 |
|
rrx2line.e |
|- E = ( RR^ ` I ) |
| 3 |
|
rrx2line.b |
|- P = ( RR ^m I ) |
| 4 |
|
rrx2line.l |
|- L = ( LineM ` E ) |
| 5 |
|
rrx2linest.a |
|- A = ( ( Y ` 0 ) - ( X ` 0 ) ) |
| 6 |
|
rrx2linest.b |
|- B = ( ( Y ` 1 ) - ( X ` 1 ) ) |
| 7 |
|
rrx2linest.c |
|- C = ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( X ` 0 ) x. ( Y ` 1 ) ) ) |
| 8 |
|
simpl1 |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> X e. P ) |
| 9 |
|
simpl2 |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> Y e. P ) |
| 10 |
|
simpr |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( X ` 0 ) = ( Y ` 0 ) ) |
| 11 |
|
simpr |
|- ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( X ` 0 ) = ( Y ` 0 ) ) |
| 12 |
11
|
anim1i |
|- ( ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) /\ ( X ` 1 ) = ( Y ` 1 ) ) -> ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X ` 1 ) = ( Y ` 1 ) ) ) |
| 13 |
|
fzo0to2pr |
|- ( 0 ..^ 2 ) = { 0 , 1 } |
| 14 |
1 13
|
eqtri |
|- I = { 0 , 1 } |
| 15 |
14
|
raleqi |
|- ( A. i e. I ( X ` i ) = ( Y ` i ) <-> A. i e. { 0 , 1 } ( X ` i ) = ( Y ` i ) ) |
| 16 |
|
c0ex |
|- 0 e. _V |
| 17 |
|
1ex |
|- 1 e. _V |
| 18 |
|
fveq2 |
|- ( i = 0 -> ( X ` i ) = ( X ` 0 ) ) |
| 19 |
|
fveq2 |
|- ( i = 0 -> ( Y ` i ) = ( Y ` 0 ) ) |
| 20 |
18 19
|
eqeq12d |
|- ( i = 0 -> ( ( X ` i ) = ( Y ` i ) <-> ( X ` 0 ) = ( Y ` 0 ) ) ) |
| 21 |
|
fveq2 |
|- ( i = 1 -> ( X ` i ) = ( X ` 1 ) ) |
| 22 |
|
fveq2 |
|- ( i = 1 -> ( Y ` i ) = ( Y ` 1 ) ) |
| 23 |
21 22
|
eqeq12d |
|- ( i = 1 -> ( ( X ` i ) = ( Y ` i ) <-> ( X ` 1 ) = ( Y ` 1 ) ) ) |
| 24 |
16 17 20 23
|
ralpr |
|- ( A. i e. { 0 , 1 } ( X ` i ) = ( Y ` i ) <-> ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X ` 1 ) = ( Y ` 1 ) ) ) |
| 25 |
15 24
|
bitri |
|- ( A. i e. I ( X ` i ) = ( Y ` i ) <-> ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X ` 1 ) = ( Y ` 1 ) ) ) |
| 26 |
12 25
|
sylibr |
|- ( ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) /\ ( X ` 1 ) = ( Y ` 1 ) ) -> A. i e. I ( X ` i ) = ( Y ` i ) ) |
| 27 |
|
elmapfn |
|- ( X e. ( RR ^m I ) -> X Fn I ) |
| 28 |
27 3
|
eleq2s |
|- ( X e. P -> X Fn I ) |
| 29 |
|
elmapfn |
|- ( Y e. ( RR ^m I ) -> Y Fn I ) |
| 30 |
29 3
|
eleq2s |
|- ( Y e. P -> Y Fn I ) |
| 31 |
28 30
|
anim12i |
|- ( ( X e. P /\ Y e. P ) -> ( X Fn I /\ Y Fn I ) ) |
| 32 |
31
|
ad2antrr |
|- ( ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) /\ ( X ` 1 ) = ( Y ` 1 ) ) -> ( X Fn I /\ Y Fn I ) ) |
| 33 |
|
eqfnfv |
|- ( ( X Fn I /\ Y Fn I ) -> ( X = Y <-> A. i e. I ( X ` i ) = ( Y ` i ) ) ) |
| 34 |
32 33
|
syl |
|- ( ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) /\ ( X ` 1 ) = ( Y ` 1 ) ) -> ( X = Y <-> A. i e. I ( X ` i ) = ( Y ` i ) ) ) |
| 35 |
26 34
|
mpbird |
|- ( ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) /\ ( X ` 1 ) = ( Y ` 1 ) ) -> X = Y ) |
| 36 |
35
|
ex |
|- ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( ( X ` 1 ) = ( Y ` 1 ) -> X = Y ) ) |
| 37 |
36
|
necon3d |
|- ( ( ( X e. P /\ Y e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( X =/= Y -> ( X ` 1 ) =/= ( Y ` 1 ) ) ) |
| 38 |
37
|
ex |
|- ( ( X e. P /\ Y e. P ) -> ( ( X ` 0 ) = ( Y ` 0 ) -> ( X =/= Y -> ( X ` 1 ) =/= ( Y ` 1 ) ) ) ) |
| 39 |
38
|
com23 |
|- ( ( X e. P /\ Y e. P ) -> ( X =/= Y -> ( ( X ` 0 ) = ( Y ` 0 ) -> ( X ` 1 ) =/= ( Y ` 1 ) ) ) ) |
| 40 |
39
|
3impia |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( ( X ` 0 ) = ( Y ` 0 ) -> ( X ` 1 ) =/= ( Y ` 1 ) ) ) |
| 41 |
40
|
imp |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( X ` 1 ) =/= ( Y ` 1 ) ) |
| 42 |
1 2 3 4
|
rrx2vlinest |
|- ( ( X e. P /\ Y e. P /\ ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X ` 1 ) =/= ( Y ` 1 ) ) ) -> ( X L Y ) = { p e. P | ( p ` 0 ) = ( X ` 0 ) } ) |
| 43 |
8 9 10 41 42
|
syl112anc |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( X L Y ) = { p e. P | ( p ` 0 ) = ( X ` 0 ) } ) |
| 44 |
|
simplr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( X e. P /\ Y e. P /\ X =/= Y ) ) |
| 45 |
|
simpr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> p e. P ) |
| 46 |
|
simpll |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( X ` 0 ) = ( Y ` 0 ) ) |
| 47 |
5
|
oveq1i |
|- ( A x. ( p ` 1 ) ) = ( ( ( Y ` 0 ) - ( X ` 0 ) ) x. ( p ` 1 ) ) |
| 48 |
47
|
a1i |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( A x. ( p ` 1 ) ) = ( ( ( Y ` 0 ) - ( X ` 0 ) ) x. ( p ` 1 ) ) ) |
| 49 |
|
oveq2 |
|- ( ( X ` 0 ) = ( Y ` 0 ) -> ( ( Y ` 0 ) - ( X ` 0 ) ) = ( ( Y ` 0 ) - ( Y ` 0 ) ) ) |
| 50 |
49
|
adantl |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( ( Y ` 0 ) - ( X ` 0 ) ) = ( ( Y ` 0 ) - ( Y ` 0 ) ) ) |
| 51 |
1 3
|
rrx2pxel |
|- ( Y e. P -> ( Y ` 0 ) e. RR ) |
| 52 |
51
|
recnd |
|- ( Y e. P -> ( Y ` 0 ) e. CC ) |
| 53 |
52
|
3ad2ant2 |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( Y ` 0 ) e. CC ) |
| 54 |
53
|
ad2antrr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( Y ` 0 ) e. CC ) |
| 55 |
54
|
subidd |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( ( Y ` 0 ) - ( Y ` 0 ) ) = 0 ) |
| 56 |
50 55
|
eqtrd |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( ( Y ` 0 ) - ( X ` 0 ) ) = 0 ) |
| 57 |
56
|
oveq1d |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( ( ( Y ` 0 ) - ( X ` 0 ) ) x. ( p ` 1 ) ) = ( 0 x. ( p ` 1 ) ) ) |
| 58 |
1 3
|
rrx2pyel |
|- ( p e. P -> ( p ` 1 ) e. RR ) |
| 59 |
58
|
recnd |
|- ( p e. P -> ( p ` 1 ) e. CC ) |
| 60 |
59
|
ad2antlr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( p ` 1 ) e. CC ) |
| 61 |
60
|
mul02d |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( 0 x. ( p ` 1 ) ) = 0 ) |
| 62 |
48 57 61
|
3eqtrd |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( A x. ( p ` 1 ) ) = 0 ) |
| 63 |
6
|
oveq1i |
|- ( B x. ( p ` 0 ) ) = ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) |
| 64 |
63
|
a1i |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( B x. ( p ` 0 ) ) = ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) ) |
| 65 |
|
oveq1 |
|- ( ( X ` 0 ) = ( Y ` 0 ) -> ( ( X ` 0 ) x. ( Y ` 1 ) ) = ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) |
| 66 |
65
|
oveq2d |
|- ( ( X ` 0 ) = ( Y ` 0 ) -> ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( X ` 0 ) x. ( Y ` 1 ) ) ) = ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) |
| 67 |
7 66
|
eqtrid |
|- ( ( X ` 0 ) = ( Y ` 0 ) -> C = ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) |
| 68 |
67
|
adantl |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> C = ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) |
| 69 |
64 68
|
oveq12d |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( ( B x. ( p ` 0 ) ) + C ) = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) ) |
| 70 |
62 69
|
eqeq12d |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) <-> 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) ) ) |
| 71 |
44 45 46 70
|
syl21anc |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) <-> 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) ) ) |
| 72 |
1 3
|
rrx2pyel |
|- ( Y e. P -> ( Y ` 1 ) e. RR ) |
| 73 |
72
|
recnd |
|- ( Y e. P -> ( Y ` 1 ) e. CC ) |
| 74 |
73
|
3ad2ant2 |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( Y ` 1 ) e. CC ) |
| 75 |
53 74
|
mulcomd |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( ( Y ` 0 ) x. ( Y ` 1 ) ) = ( ( Y ` 1 ) x. ( Y ` 0 ) ) ) |
| 76 |
75
|
oveq2d |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) = ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 1 ) x. ( Y ` 0 ) ) ) ) |
| 77 |
1 3
|
rrx2pyel |
|- ( X e. P -> ( X ` 1 ) e. RR ) |
| 78 |
77
|
recnd |
|- ( X e. P -> ( X ` 1 ) e. CC ) |
| 79 |
78
|
3ad2ant1 |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( X ` 1 ) e. CC ) |
| 80 |
79 74 53
|
subdird |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) = ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 1 ) x. ( Y ` 0 ) ) ) ) |
| 81 |
76 80
|
eqtr4d |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) = ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) |
| 82 |
81
|
ad2antlr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) = ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) |
| 83 |
82
|
oveq2d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) ) |
| 84 |
83
|
eqeq2d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) <-> 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) ) ) |
| 85 |
|
eqcom |
|- ( 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) <-> ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) = 0 ) |
| 86 |
85
|
a1i |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) <-> ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) = 0 ) ) |
| 87 |
74
|
ad2antlr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( Y ` 1 ) e. CC ) |
| 88 |
79
|
ad2antlr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( X ` 1 ) e. CC ) |
| 89 |
87 88
|
subcld |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( Y ` 1 ) - ( X ` 1 ) ) e. CC ) |
| 90 |
1 3
|
rrx2pxel |
|- ( p e. P -> ( p ` 0 ) e. RR ) |
| 91 |
90
|
recnd |
|- ( p e. P -> ( p ` 0 ) e. CC ) |
| 92 |
91
|
adantl |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( p ` 0 ) e. CC ) |
| 93 |
89 92
|
mulcld |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) e. CC ) |
| 94 |
88 87
|
subcld |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( X ` 1 ) - ( Y ` 1 ) ) e. CC ) |
| 95 |
53
|
ad2antlr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( Y ` 0 ) e. CC ) |
| 96 |
94 95
|
mulcld |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) e. CC ) |
| 97 |
|
addeq0 |
|- ( ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) e. CC /\ ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) e. CC ) -> ( ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) = 0 <-> ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) = -u ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) ) |
| 98 |
93 96 97
|
syl2anc |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) = 0 <-> ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) = -u ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) ) |
| 99 |
94 95
|
mulneg1d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( -u ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) = -u ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) |
| 100 |
88 87
|
negsubdi2d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> -u ( ( X ` 1 ) - ( Y ` 1 ) ) = ( ( Y ` 1 ) - ( X ` 1 ) ) ) |
| 101 |
100
|
oveq1d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( -u ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) = ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( Y ` 0 ) ) ) |
| 102 |
99 101
|
eqtr3d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> -u ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) = ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( Y ` 0 ) ) ) |
| 103 |
102
|
eqeq2d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) = -u ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) <-> ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) = ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( Y ` 0 ) ) ) ) |
| 104 |
|
ancom |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) <-> ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) ) |
| 105 |
|
necom |
|- ( ( X ` 1 ) =/= ( Y ` 1 ) <-> ( Y ` 1 ) =/= ( X ` 1 ) ) |
| 106 |
41 104 105
|
3imtr3i |
|- ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) -> ( Y ` 1 ) =/= ( X ` 1 ) ) |
| 107 |
106
|
adantr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( Y ` 1 ) =/= ( X ` 1 ) ) |
| 108 |
87 88 107
|
subne0d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( Y ` 1 ) - ( X ` 1 ) ) =/= 0 ) |
| 109 |
92 95 89 108
|
mulcand |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) = ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( Y ` 0 ) ) <-> ( p ` 0 ) = ( Y ` 0 ) ) ) |
| 110 |
103 109
|
bitrd |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) = -u ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) <-> ( p ` 0 ) = ( Y ` 0 ) ) ) |
| 111 |
86 98 110
|
3bitrd |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) - ( Y ` 1 ) ) x. ( Y ` 0 ) ) ) <-> ( p ` 0 ) = ( Y ` 0 ) ) ) |
| 112 |
84 111
|
bitrd |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( 0 = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( Y ` 0 ) x. ( Y ` 1 ) ) ) ) <-> ( p ` 0 ) = ( Y ` 0 ) ) ) |
| 113 |
|
simpl |
|- ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) -> ( X ` 0 ) = ( Y ` 0 ) ) |
| 114 |
113
|
eqcomd |
|- ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) -> ( Y ` 0 ) = ( X ` 0 ) ) |
| 115 |
114
|
adantr |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( Y ` 0 ) = ( X ` 0 ) ) |
| 116 |
115
|
eqeq2d |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( p ` 0 ) = ( Y ` 0 ) <-> ( p ` 0 ) = ( X ` 0 ) ) ) |
| 117 |
71 112 116
|
3bitrrd |
|- ( ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) /\ p e. P ) -> ( ( p ` 0 ) = ( X ` 0 ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) ) |
| 118 |
117
|
rabbidva |
|- ( ( ( X ` 0 ) = ( Y ` 0 ) /\ ( X e. P /\ Y e. P /\ X =/= Y ) ) -> { p e. P | ( p ` 0 ) = ( X ` 0 ) } = { p e. P | ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) } ) |
| 119 |
118
|
ancoms |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> { p e. P | ( p ` 0 ) = ( X ` 0 ) } = { p e. P | ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) } ) |
| 120 |
43 119
|
eqtrd |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ ( X ` 0 ) = ( Y ` 0 ) ) -> ( X L Y ) = { p e. P | ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) } ) |
| 121 |
1 2 3 4
|
rrx2line |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( X L Y ) = { p e. P | E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) } ) |
| 122 |
121
|
adantr |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ -. ( X ` 0 ) = ( Y ` 0 ) ) -> ( X L Y ) = { p e. P | E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) } ) |
| 123 |
|
df-ne |
|- ( ( X ` 0 ) =/= ( Y ` 0 ) <-> -. ( X ` 0 ) = ( Y ` 0 ) ) |
| 124 |
90
|
ad2antlr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( p ` 0 ) e. RR ) |
| 125 |
1 3
|
rrx2pxel |
|- ( X e. P -> ( X ` 0 ) e. RR ) |
| 126 |
125
|
3ad2ant1 |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( X ` 0 ) e. RR ) |
| 127 |
126
|
ad2antrr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( X ` 0 ) e. RR ) |
| 128 |
51
|
3ad2ant2 |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( Y ` 0 ) e. RR ) |
| 129 |
128
|
ad2antrr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( Y ` 0 ) e. RR ) |
| 130 |
|
simpr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( X ` 0 ) =/= ( Y ` 0 ) ) |
| 131 |
58
|
ad2antlr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( p ` 1 ) e. RR ) |
| 132 |
77
|
3ad2ant1 |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( X ` 1 ) e. RR ) |
| 133 |
132
|
ad2antrr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( X ` 1 ) e. RR ) |
| 134 |
72
|
3ad2ant2 |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( Y ` 1 ) e. RR ) |
| 135 |
134
|
ad2antrr |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( Y ` 1 ) e. RR ) |
| 136 |
124 127 129 130 131 133 135
|
affinecomb2 |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) <-> ( ( ( Y ` 0 ) - ( X ` 0 ) ) x. ( p ` 1 ) ) = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( X ` 0 ) x. ( Y ` 1 ) ) ) ) ) ) |
| 137 |
5
|
eqcomi |
|- ( ( Y ` 0 ) - ( X ` 0 ) ) = A |
| 138 |
137
|
oveq1i |
|- ( ( ( Y ` 0 ) - ( X ` 0 ) ) x. ( p ` 1 ) ) = ( A x. ( p ` 1 ) ) |
| 139 |
6
|
eqcomi |
|- ( ( Y ` 1 ) - ( X ` 1 ) ) = B |
| 140 |
139
|
oveq1i |
|- ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) = ( B x. ( p ` 0 ) ) |
| 141 |
7
|
eqcomi |
|- ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( X ` 0 ) x. ( Y ` 1 ) ) ) = C |
| 142 |
140 141
|
oveq12i |
|- ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( X ` 0 ) x. ( Y ` 1 ) ) ) ) = ( ( B x. ( p ` 0 ) ) + C ) |
| 143 |
138 142
|
eqeq12i |
|- ( ( ( ( Y ` 0 ) - ( X ` 0 ) ) x. ( p ` 1 ) ) = ( ( ( ( Y ` 1 ) - ( X ` 1 ) ) x. ( p ` 0 ) ) + ( ( ( X ` 1 ) x. ( Y ` 0 ) ) - ( ( X ` 0 ) x. ( Y ` 1 ) ) ) ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) |
| 144 |
136 143
|
bitrdi |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) /\ ( X ` 0 ) =/= ( Y ` 0 ) ) -> ( E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) ) |
| 145 |
144
|
expcom |
|- ( ( X ` 0 ) =/= ( Y ` 0 ) -> ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) -> ( E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) ) ) |
| 146 |
123 145
|
sylbir |
|- ( -. ( X ` 0 ) = ( Y ` 0 ) -> ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ p e. P ) -> ( E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) ) ) |
| 147 |
146
|
expd |
|- ( -. ( X ` 0 ) = ( Y ` 0 ) -> ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( p e. P -> ( E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) ) ) ) |
| 148 |
147
|
impcom |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ -. ( X ` 0 ) = ( Y ` 0 ) ) -> ( p e. P -> ( E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) ) ) |
| 149 |
148
|
imp |
|- ( ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ -. ( X ` 0 ) = ( Y ` 0 ) ) /\ p e. P ) -> ( E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) <-> ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) ) ) |
| 150 |
149
|
rabbidva |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ -. ( X ` 0 ) = ( Y ` 0 ) ) -> { p e. P | E. t e. RR ( ( p ` 0 ) = ( ( ( 1 - t ) x. ( X ` 0 ) ) + ( t x. ( Y ` 0 ) ) ) /\ ( p ` 1 ) = ( ( ( 1 - t ) x. ( X ` 1 ) ) + ( t x. ( Y ` 1 ) ) ) ) } = { p e. P | ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) } ) |
| 151 |
122 150
|
eqtrd |
|- ( ( ( X e. P /\ Y e. P /\ X =/= Y ) /\ -. ( X ` 0 ) = ( Y ` 0 ) ) -> ( X L Y ) = { p e. P | ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) } ) |
| 152 |
120 151
|
pm2.61dan |
|- ( ( X e. P /\ Y e. P /\ X =/= Y ) -> ( X L Y ) = { p e. P | ( A x. ( p ` 1 ) ) = ( ( B x. ( p ` 0 ) ) + C ) } ) |