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Theorem ccats1val2 11386
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 11367 . . . 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 11286 . . . . . . 7  |-  ( W  e. Word  V  ->  ( `  W )  e.  NN0 )
54nn0zd 9745 . . . . . 6  |-  ( W  e. Word  V  ->  ( `  W )  e.  ZZ )
6 elfzomin 10602 . . . . . 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 11370 . . . . . . . 8  |-  ( S  e.  V  ->  ( ` 
<" S "> )  =  1 )
98oveq2d 6091 . . . . . . 7  |-  ( S  e.  V  ->  (
( `  W )  +  ( `  <" S "> ) )  =  ( ( `  W
)  +  1 ) )
109oveq2d 6091 . . . . . 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 11344 . . 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 6082 . . . . 5  |-  ( I  =  ( `  W
)  ->  ( I  -  ( `  W )
)  =  ( ( `  W )  -  ( `  W ) ) )
19183ad2ant3 1051 . . . 4  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  (
I  -  ( `  W
) )  =  ( ( `  W )  -  ( `  W )
) )
204nn0cnd 9601 . . . . . 6  |-  ( W  e. Word  V  ->  ( `  W )  e.  CC )
2120subidd 8615 . . . . 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 5694 . 2  |-  ( ( W  e. Word  V  /\  S  e.  V  /\  I  =  ( `  W
) )  ->  ( <" S "> `  ( I  -  ( `  W ) ) )  =  ( <" S "> `  0 )
)
25 s1fv 11372 . . 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
Syntax hints:    -> wi 4    <-> wb 105    /\ w3a 1009    = wceq 1402    e. wcel 2209   ` cfv 5372  (class class class)co 6075   0cc0 8169   1c1 8170    + caddc 8172    - cmin 8487   ZZcz 9623  ..^cfzo 10527  ♯chash 11192  Word cword 11282   ++ cconcat 11336   <"cs1 11361
This theorem was proved from 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 4241  ax-sep 4244  ax-nul 4254  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679  ax-iinf 4730  ax-cnex 8260  ax-resscn 8261  ax-1cn 8262  ax-1re 8263  ax-icn 8264  ax-addcl 8265  ax-addrcl 8266  ax-mulcl 8267  ax-addcom 8269  ax-addass 8271  ax-distr 8273  ax-i2m1 8274  ax-0lt1 8275  ax-0id 8277  ax-rnegex 8278  ax-cnre 8280  ax-pre-ltirr 8281  ax-pre-ltwlin 8282  ax-pre-lttrn 8283  ax-pre-apti 8284  ax-pre-ltadd 8285
This theorem 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 3636  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-int 3966  df-iun 4009  df-br 4126  df-opab 4188  df-mpt 4189  df-tr 4225  df-id 4433  df-iord 4506  df-on 4508  df-ilim 4509  df-suc 4511  df-iom 4733  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-res 4781  df-ima 4782  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-f1 5377  df-fo 5378  df-f1o 5379  df-fv 5380  df-riota 6028  df-ov 6078  df-oprab 6079  df-mpo 6080  df-1st 6364  df-2nd 6365  df-recs 6566  df-frec 6652  df-1o 6677  df-er 6797  df-en 7013  df-dom 7014  df-fin 7015  df-pnf 8352  df-mnf 8353  df-xr 8354  df-ltxr 8355  df-le 8356  df-sub 8489  df-neg 8490  df-inn 9284  df-n0 9543  df-z 9624  df-uz 9901  df-fz 10391  df-fzo 10528  df-ihash 11193  df-word 11283  df-concat 11337  df-s1 11362
This theorem is referenced by:  ccatws1ls  11388  ccatw2s1p1g  11391  ccatw2s1p2  11392
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