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Theorem ccats1val2 11408
Description: Value of the symbol concatenated with a word. (Contributed by Alexander van der Vekens, 5-Aug-2018.) (Proof shortened by Alexander van der Vekens, 14-Oct-2018.)
Assertion
Ref Expression
ccats1val2  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
( W ++  <" S "> ) `  I
)  =  S )

Proof of Theorem ccats1val2
StepHypRef Expression
1 simp1 1028 . . 3  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  W  e. Word  V )
2 s1cl 11389 . . . 4  |-  ( S  e.  V  ->  <" S ">  e. Word  V )
323ad2ant2 1050 . . 3  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  <" S ">  e. Word  V )
4 lencl 11308 . . . . . . 7  |-  ( W  e. Word  V  ->  ( `  W )  e.  NN0 )
54nn0zd 9766 . . . . . 6  |-  ( W  e. Word  V  ->  ( `  W )  e.  ZZ )
6 elfzomin 10624 . . . . . 6  |-  ( ( `  W )  e.  ZZ  ->  ( `  W )  e.  ( ( `  W
)..^ ( ( `  W
)  +  1 ) ) )
71, 5, 63syl 17 . . . . 5  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  ( `  W )  e.  ( ( `  W )..^ ( ( `  W )  +  1 ) ) )
8 s1leng 11392 . . . . . . . 8  |-  ( S  e.  V  ->  ( ` 
<" S "> )  =  1 )
98oveq2d 6101 . . . . . . 7  |-  ( S  e.  V  ->  (
( `  W )  +  ( `  <" S "> ) )  =  ( ( `  W
)  +  1 ) )
109oveq2d 6101 . . . . . 6  |-  ( S  e.  V  ->  (
( `  W )..^ ( ( `  W )  +  ( `  <" S "> ) ) )  =  ( ( `  W
)..^ ( ( `  W
)  +  1 ) ) )
11103ad2ant2 1050 . . . . 5  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
( `  W )..^ ( ( `  W )  +  ( `  <" S "> ) ) )  =  ( ( `  W
)..^ ( ( `  W
)  +  1 ) ) )
127, 11eleqtrrd 2318 . . . 4  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  ( `  W )  e.  ( ( `  W )..^ ( ( `  W )  +  ( `  <" S "> ) ) ) )
13 eleq1 2301 . . . . 5  |-  ( I  =  ( `  W
)  ->  ( I  e.  ( ( `  W
)..^ ( ( `  W
)  +  ( `  <" S "> )
) )  <->  ( `  W
)  e.  ( ( `  W )..^ ( ( `  W )  +  ( `  <" S "> ) ) ) ) )
14133ad2ant3 1051 . . . 4  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
I  e.  ( ( `  W )..^ ( ( `  W )  +  ( `  <" S "> ) ) )  <->  ( `  W
)  e.  ( ( `  W )..^ ( ( `  W )  +  ( `  <" S "> ) ) ) ) )
1512, 14mpbird 167 . . 3  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  I  e.  ( ( `  W
)..^ ( ( `  W
)  +  ( `  <" S "> )
) ) )
16 ccatval2 11366 . . 3  |-  ( ( W  e. Word  V  /\  <" S ">  e. Word  V  /\  I  e.  ( ( `  W
)..^ ( ( `  W
)  +  ( `  <" S "> )
) ) )  -> 
( ( W ++  <" S "> ) `  I )  =  (
<" S "> `  ( I  -  ( `  W ) ) ) )
171, 3, 15, 16syl3anc 1278 . 2  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
( W ++  <" S "> ) `  I
)  =  ( <" S "> `  ( I  -  ( `  W ) ) ) )
18 oveq1 6092 . . . . 5  |-  ( I  =  ( `  W
)  ->  ( I  -  ( `  W )
)  =  ( ( `  W )  -  ( `  W ) ) )
19183ad2ant3 1051 . . . 4  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
I  -  ( `  W
) )  =  ( ( `  W )  -  ( `  W )
) )
204nn0cnd 9622 . . . . . 6  |-  ( W  e. Word  V  ->  ( `  W )  e.  CC )
2120subidd 8625 . . . . 5  |-  ( W  e. Word  V  ->  (
( `  W )  -  ( `  W ) )  =  0 )
22213ad2ant1 1049 . . . 4  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
( `  W )  -  ( `  W ) )  =  0 )
2319, 22eqtrd 2271 . . 3  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
I  -  ( `  W
) )  =  0 )
2423fveq2d 5699 . 2  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  ( <" S "> `  ( I  -  ( `  W ) ) )  =  ( <" S "> `  0 )
)
25 s1fv 11394 . . 3  |-  ( S  e.  V  ->  ( <" S "> `  0 )  =  S )
26253ad2ant2 1050 . 2  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  ( <" S "> `  0 )  =  S )
2717, 24, 263eqtrd 2275 1  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
( W ++  <" S "> ) `  I
)  =  S )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    <-> wb 105    /\ w3a 1009    = wceq 1402    e. wcel 2209   ` cfv 5377  (class class class)co 6085   0cc0 8179   1c1 8180    + caddc 8182    - cmin 8497   ZZcz 9644  ..^cfzo 10549  ♯chash 11214  Word cword 11304   ++ cconcat 11358   <"cs1 11383
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-coll 4246  ax-sep 4249  ax-nul 4259  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684  ax-iinf 4735  ax-cnex 8270  ax-resscn 8271  ax-1cn 8272  ax-1re 8273  ax-icn 8274  ax-addcl 8275  ax-addrcl 8276  ax-mulcl 8277  ax-addcom 8279  ax-addass 8281  ax-distr 8283  ax-i2m1 8284  ax-0lt1 8285  ax-0id 8287  ax-rnegex 8288  ax-cnre 8290  ax-pre-ltirr 8291  ax-pre-ltwlin 8292  ax-pre-lttrn 8293  ax-pre-apti 8294  ax-pre-ltadd 8295
This proof depends on definitions:  df-bi 117  df-dc 847  df-3or 1010  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-nel 2516  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-if 3639  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-iun 4014  df-br 4131  df-opab 4193  df-mpt 4194  df-tr 4230  df-id 4438  df-iord 4511  df-on 4513  df-ilim 4514  df-suc 4516  df-iom 4738  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-riota 6038  df-ov 6088  df-oprab 6089  df-mpo 6090  df-1st 6374  df-2nd 6375  df-recs 6576  df-frec 6662  df-1o 6687  df-er 6807  df-en 7023  df-dom 7024  df-fin 7025  df-pnf 8362  df-mnf 8363  df-xr 8364  df-ltxr 8365  df-le 8366  df-sub 8499  df-neg 8500  df-inn 9305  df-n0 9564  df-z 9645  df-uz 9922  df-fz 10412  df-fzo 10550  df-ihash 11215  df-word 11305  df-concat 11359  df-s1 11384
This theorem is used by:  ccatws1ls  11410  ccatw2s1p1g  11413  ccatw2s1p2  11414
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