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Theorem wlkntrllem3 24689
Description: Lemma 3 for wlkntrl 24690: F is not injective. (Contributed by Alexander van der Vekens, 22-Oct-2017.)
Hypotheses
Ref Expression
wlkntrl.v  |-  V  =  { x ,  y }
wlkntrl.e  |-  E  =  { <. 0 ,  {
x ,  y }
>. }
wlkntrl.f  |-  F  =  { <. 0 ,  0
>. ,  <. 1 ,  0 >. }
wlkntrl.p  |-  P  =  { <. 0 ,  x >. ,  <. 1 ,  y
>. ,  <. 2 ,  x >. }
Assertion
Ref Expression
wlkntrllem3  |-  -.  Fun  `' F
Distinct variable group:    x, F, y
Allowed substitution hints:    P( x, y)    E( x, y)    V( x, y)

Proof of Theorem wlkntrllem3
StepHypRef Expression
1 ax-1ne0 9578 . . 3  |-  1  =/=  0
21neii 2656 . 2  |-  -.  1  =  0
3 0ne1 10624 . . . . 5  |-  0  =/=  1
4 c0ex 9607 . . . . . 6  |-  0  e.  _V
5 1ex 9608 . . . . . 6  |-  1  e.  _V
64, 5, 4, 4fpr 6080 . . . . 5  |-  ( 0  =/=  1  ->  { <. 0 ,  0 >. , 
<. 1 ,  0
>. } : { 0 ,  1 } --> { 0 ,  0 } )
73, 6ax-mp 5 . . . 4  |-  { <. 0 ,  0 >. , 
<. 1 ,  0
>. } : { 0 ,  1 } --> { 0 ,  0 }
8 wlkntrl.f . . . . . 6  |-  F  =  { <. 0 ,  0
>. ,  <. 1 ,  0 >. }
98eqcomi 2470 . . . . 5  |-  { <. 0 ,  0 >. , 
<. 1 ,  0
>. }  =  F
109feq1i 5729 . . . 4  |-  ( {
<. 0 ,  0
>. ,  <. 1 ,  0 >. } : {
0 ,  1 } --> { 0 ,  0 }  <->  F : { 0 ,  1 } --> { 0 ,  0 } )
117, 10mpbi 208 . . 3  |-  F : { 0 ,  1 } --> { 0 ,  0 }
12 df-f1 5599 . . . 4  |-  ( F : { 0 ,  1 } -1-1-> { 0 ,  0 }  <->  ( F : { 0 ,  1 } --> { 0 ,  0 }  /\  Fun  `' F ) )
13 dff13 6167 . . . . 5  |-  ( F : { 0 ,  1 } -1-1-> { 0 ,  0 }  <->  ( F : { 0 ,  1 } --> { 0 ,  0 }  /\  A. x  e.  { 0 ,  1 } A. y  e.  { 0 ,  1 }  (
( F `  x
)  =  ( F `
 y )  ->  x  =  y )
) )
14 fveq2 5872 . . . . . . . . . . 11  |-  ( x  =  0  ->  ( F `  x )  =  ( F ` 
0 ) )
1514eqeq1d 2459 . . . . . . . . . 10  |-  ( x  =  0  ->  (
( F `  x
)  =  ( F `
 y )  <->  ( F `  0 )  =  ( F `  y
) ) )
16 eqeq1 2461 . . . . . . . . . 10  |-  ( x  =  0  ->  (
x  =  y  <->  0  =  y ) )
1715, 16imbi12d 320 . . . . . . . . 9  |-  ( x  =  0  ->  (
( ( F `  x )  =  ( F `  y )  ->  x  =  y )  <->  ( ( F `
 0 )  =  ( F `  y
)  ->  0  =  y ) ) )
1817ralbidv 2896 . . . . . . . 8  |-  ( x  =  0  ->  ( A. y  e.  { 0 ,  1 }  (
( F `  x
)  =  ( F `
 y )  ->  x  =  y )  <->  A. y  e.  { 0 ,  1 }  (
( F `  0
)  =  ( F `
 y )  -> 
0  =  y ) ) )
19 fveq2 5872 . . . . . . . . . . 11  |-  ( x  =  1  ->  ( F `  x )  =  ( F ` 
1 ) )
2019eqeq1d 2459 . . . . . . . . . 10  |-  ( x  =  1  ->  (
( F `  x
)  =  ( F `
 y )  <->  ( F `  1 )  =  ( F `  y
) ) )
21 eqeq1 2461 . . . . . . . . . 10  |-  ( x  =  1  ->  (
x  =  y  <->  1  =  y ) )
2220, 21imbi12d 320 . . . . . . . . 9  |-  ( x  =  1  ->  (
( ( F `  x )  =  ( F `  y )  ->  x  =  y )  <->  ( ( F `
 1 )  =  ( F `  y
)  ->  1  =  y ) ) )
2322ralbidv 2896 . . . . . . . 8  |-  ( x  =  1  ->  ( A. y  e.  { 0 ,  1 }  (
( F `  x
)  =  ( F `
 y )  ->  x  =  y )  <->  A. y  e.  { 0 ,  1 }  (
( F `  1
)  =  ( F `
 y )  -> 
1  =  y ) ) )
244, 5, 18, 23ralpr 4085 . . . . . . 7  |-  ( A. x  e.  { 0 ,  1 } A. y  e.  { 0 ,  1 }  (
( F `  x
)  =  ( F `
 y )  ->  x  =  y )  <->  ( A. y  e.  {
0 ,  1 }  ( ( F ` 
0 )  =  ( F `  y )  ->  0  =  y )  /\  A. y  e.  { 0 ,  1 }  ( ( F `
 1 )  =  ( F `  y
)  ->  1  =  y ) ) )
25 fveq2 5872 . . . . . . . . . . 11  |-  ( y  =  0  ->  ( F `  y )  =  ( F ` 
0 ) )
2625eqeq2d 2471 . . . . . . . . . 10  |-  ( y  =  0  ->  (
( F `  0
)  =  ( F `
 y )  <->  ( F `  0 )  =  ( F `  0
) ) )
27 eqeq2 2472 . . . . . . . . . 10  |-  ( y  =  0  ->  (
0  =  y  <->  0  = 
0 ) )
2826, 27imbi12d 320 . . . . . . . . 9  |-  ( y  =  0  ->  (
( ( F ` 
0 )  =  ( F `  y )  ->  0  =  y )  <->  ( ( F `
 0 )  =  ( F `  0
)  ->  0  = 
0 ) ) )
29 fveq2 5872 . . . . . . . . . . 11  |-  ( y  =  1  ->  ( F `  y )  =  ( F ` 
1 ) )
3029eqeq2d 2471 . . . . . . . . . 10  |-  ( y  =  1  ->  (
( F `  0
)  =  ( F `
 y )  <->  ( F `  0 )  =  ( F `  1
) ) )
31 eqeq2 2472 . . . . . . . . . 10  |-  ( y  =  1  ->  (
0  =  y  <->  0  = 
1 ) )
3230, 31imbi12d 320 . . . . . . . . 9  |-  ( y  =  1  ->  (
( ( F ` 
0 )  =  ( F `  y )  ->  0  =  y )  <->  ( ( F `
 0 )  =  ( F `  1
)  ->  0  = 
1 ) ) )
334, 5, 28, 32ralpr 4085 . . . . . . . 8  |-  ( A. y  e.  { 0 ,  1 }  (
( F `  0
)  =  ( F `
 y )  -> 
0  =  y )  <-> 
( ( ( F `
 0 )  =  ( F `  0
)  ->  0  = 
0 )  /\  (
( F `  0
)  =  ( F `
 1 )  -> 
0  =  1 ) ) )
3425eqeq2d 2471 . . . . . . . . . 10  |-  ( y  =  0  ->  (
( F `  1
)  =  ( F `
 y )  <->  ( F `  1 )  =  ( F `  0
) ) )
35 eqeq2 2472 . . . . . . . . . 10  |-  ( y  =  0  ->  (
1  =  y  <->  1  = 
0 ) )
3634, 35imbi12d 320 . . . . . . . . 9  |-  ( y  =  0  ->  (
( ( F ` 
1 )  =  ( F `  y )  ->  1  =  y )  <->  ( ( F `
 1 )  =  ( F `  0
)  ->  1  = 
0 ) ) )
3729eqeq2d 2471 . . . . . . . . . 10  |-  ( y  =  1  ->  (
( F `  1
)  =  ( F `
 y )  <->  ( F `  1 )  =  ( F `  1
) ) )
38 eqeq2 2472 . . . . . . . . . 10  |-  ( y  =  1  ->  (
1  =  y  <->  1  = 
1 ) )
3937, 38imbi12d 320 . . . . . . . . 9  |-  ( y  =  1  ->  (
( ( F ` 
1 )  =  ( F `  y )  ->  1  =  y )  <->  ( ( F `
 1 )  =  ( F `  1
)  ->  1  = 
1 ) ) )
404, 5, 36, 39ralpr 4085 . . . . . . . 8  |-  ( A. y  e.  { 0 ,  1 }  (
( F `  1
)  =  ( F `
 y )  -> 
1  =  y )  <-> 
( ( ( F `
 1 )  =  ( F `  0
)  ->  1  = 
0 )  /\  (
( F `  1
)  =  ( F `
 1 )  -> 
1  =  1 ) ) )
418fveq1i 5873 . . . . . . . . . . . . 13  |-  ( F `
 1 )  =  ( { <. 0 ,  0 >. ,  <. 1 ,  0 >. } `
 1 )
425, 4fvpr2 6116 . . . . . . . . . . . . . 14  |-  ( 0  =/=  1  ->  ( { <. 0 ,  0
>. ,  <. 1 ,  0 >. } `  1
)  =  0 )
433, 42mp1i 12 . . . . . . . . . . . . 13  |-  ( -.  1  =  0  -> 
( { <. 0 ,  0 >. ,  <. 1 ,  0 >. } `
 1 )  =  0 )
4441, 43syl5eq 2510 . . . . . . . . . . . 12  |-  ( -.  1  =  0  -> 
( F `  1
)  =  0 )
458fveq1i 5873 . . . . . . . . . . . . 13  |-  ( F `
 0 )  =  ( { <. 0 ,  0 >. ,  <. 1 ,  0 >. } `
 0 )
464, 4fvpr1 6115 . . . . . . . . . . . . . 14  |-  ( 0  =/=  1  ->  ( { <. 0 ,  0
>. ,  <. 1 ,  0 >. } `  0
)  =  0 )
473, 46mp1i 12 . . . . . . . . . . . . 13  |-  ( -.  1  =  0  -> 
( { <. 0 ,  0 >. ,  <. 1 ,  0 >. } `
 0 )  =  0 )
4845, 47syl5req 2511 . . . . . . . . . . . 12  |-  ( -.  1  =  0  -> 
0  =  ( F `
 0 ) )
4944, 48eqtrd 2498 . . . . . . . . . . 11  |-  ( -.  1  =  0  -> 
( F `  1
)  =  ( F `
 0 ) )
5049con1i 129 . . . . . . . . . 10  |-  ( -.  ( F `  1
)  =  ( F `
 0 )  -> 
1  =  0 )
51 id 22 . . . . . . . . . 10  |-  ( 1  =  0  ->  1  =  0 )
5250, 51ja 161 . . . . . . . . 9  |-  ( ( ( F `  1
)  =  ( F `
 0 )  -> 
1  =  0 )  ->  1  =  0 )
5352ad2antrl 727 . . . . . . . 8  |-  ( ( ( ( ( F `
 0 )  =  ( F `  0
)  ->  0  = 
0 )  /\  (
( F `  0
)  =  ( F `
 1 )  -> 
0  =  1 ) )  /\  ( ( ( F `  1
)  =  ( F `
 0 )  -> 
1  =  0 )  /\  ( ( F `
 1 )  =  ( F `  1
)  ->  1  = 
1 ) ) )  ->  1  =  0 )
5433, 40, 53syl2anb 479 . . . . . . 7  |-  ( ( A. y  e.  {
0 ,  1 }  ( ( F ` 
0 )  =  ( F `  y )  ->  0  =  y )  /\  A. y  e.  { 0 ,  1 }  ( ( F `
 1 )  =  ( F `  y
)  ->  1  =  y ) )  -> 
1  =  0 )
5524, 54sylbi 195 . . . . . 6  |-  ( A. x  e.  { 0 ,  1 } A. y  e.  { 0 ,  1 }  (
( F `  x
)  =  ( F `
 y )  ->  x  =  y )  ->  1  =  0 )
5655adantl 466 . . . . 5  |-  ( ( F : { 0 ,  1 } --> { 0 ,  0 }  /\  A. x  e.  { 0 ,  1 } A. y  e.  { 0 ,  1 }  (
( F `  x
)  =  ( F `
 y )  ->  x  =  y )
)  ->  1  = 
0 )
5713, 56sylbi 195 . . . 4  |-  ( F : { 0 ,  1 } -1-1-> { 0 ,  0 }  ->  1  =  0 )
5812, 57sylbir 213 . . 3  |-  ( ( F : { 0 ,  1 } --> { 0 ,  0 }  /\  Fun  `' F )  ->  1  =  0 )
5911, 58mpan 670 . 2  |-  ( Fun  `' F  ->  1  =  0 )
602, 59mto 176 1  |-  -.  Fun  `' F
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 369    = wceq 1395    =/= wne 2652   A.wral 2807   {csn 4032   {cpr 4034   {ctp 4036   <.cop 4038   `'ccnv 5007   Fun wfun 5588   -->wf 5590   -1-1->wf1 5591   ` cfv 5594   0cc0 9509   1c1 9510   2c2 10606
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1619  ax-4 1632  ax-5 1705  ax-6 1748  ax-7 1791  ax-8 1821  ax-9 1823  ax-10 1838  ax-11 1843  ax-12 1855  ax-13 2000  ax-ext 2435  ax-sep 4578  ax-nul 4586  ax-pow 4634  ax-pr 4695  ax-1cn 9567  ax-icn 9568  ax-addcl 9569  ax-mulcl 9571  ax-i2m1 9577  ax-1ne0 9578
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3an 975  df-tru 1398  df-ex 1614  df-nf 1618  df-sb 1741  df-eu 2287  df-mo 2288  df-clab 2443  df-cleq 2449  df-clel 2452  df-nfc 2607  df-ne 2654  df-ral 2812  df-rex 2813  df-rab 2816  df-v 3111  df-sbc 3328  df-dif 3474  df-un 3476  df-in 3478  df-ss 3485  df-nul 3794  df-if 3945  df-sn 4033  df-pr 4035  df-op 4039  df-uni 4252  df-br 4457  df-opab 4516  df-id 4804  df-xp 5014  df-rel 5015  df-cnv 5016  df-co 5017  df-dm 5018  df-rn 5019  df-res 5020  df-iota 5557  df-fun 5596  df-fn 5597  df-f 5598  df-f1 5599  df-fv 5602
This theorem is referenced by:  wlkntrl  24690
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