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Theorem ccatval2 11077
Description: Value of a symbol in the right half of a concatenated word. (Contributed by Stefan O'Rear, 15-Aug-2015.) (Revised by Mario Carneiro, 22-Sep-2015.)
Assertion
Ref Expression
ccatval2  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  ( ( S ++  T ) `  I
)  =  ( T `
 ( I  -  ( `  S ) ) ) )

Proof of Theorem ccatval2
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 wrdfin 11035 . . . 4  |-  ( S  e. Word  B  ->  S  e.  Fin )
2 wrdfin 11035 . . . 4  |-  ( T  e. Word  B  ->  T  e.  Fin )
3 ccatfvalfi 11071 . . . 4  |-  ( ( S  e.  Fin  /\  T  e.  Fin )  ->  ( S ++  T )  =  ( x  e.  ( 0..^ ( ( `  S )  +  ( `  T ) ) ) 
|->  if ( x  e.  ( 0..^ ( `  S
) ) ,  ( S `  x ) ,  ( T `  ( x  -  ( `  S ) ) ) ) ) )
41, 2, 3syl2an 289 . . 3  |-  ( ( S  e. Word  B  /\  T  e. Word  B )  ->  ( S ++  T )  =  ( x  e.  ( 0..^ ( ( `  S )  +  ( `  T ) ) ) 
|->  if ( x  e.  ( 0..^ ( `  S
) ) ,  ( S `  x ) ,  ( T `  ( x  -  ( `  S ) ) ) ) ) )
543adant3 1020 . 2  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  ( S ++  T
)  =  ( x  e.  ( 0..^ ( ( `  S )  +  ( `  T )
) )  |->  if ( x  e.  ( 0..^ ( `  S )
) ,  ( S `
 x ) ,  ( T `  (
x  -  ( `  S
) ) ) ) ) )
6 eleq1 2269 . . . 4  |-  ( x  =  I  ->  (
x  e.  ( 0..^ ( `  S )
)  <->  I  e.  (
0..^ ( `  S )
) ) )
7 fveq2 5589 . . . 4  |-  ( x  =  I  ->  ( S `  x )  =  ( S `  I ) )
8 fvoveq1 5980 . . . 4  |-  ( x  =  I  ->  ( T `  ( x  -  ( `  S )
) )  =  ( T `  ( I  -  ( `  S
) ) ) )
96, 7, 8ifbieq12d 3602 . . 3  |-  ( x  =  I  ->  if ( x  e.  (
0..^ ( `  S )
) ,  ( S `
 x ) ,  ( T `  (
x  -  ( `  S
) ) ) )  =  if ( I  e.  ( 0..^ ( `  S ) ) ,  ( S `  I
) ,  ( T `
 ( I  -  ( `  S ) ) ) ) )
10 fzodisj 10322 . . . . . 6  |-  ( ( 0..^ ( `  S
) )  i^i  (
( `  S )..^ ( ( `  S )  +  ( `  T )
) ) )  =  (/)
11 minel 3526 . . . . . 6  |-  ( ( I  e.  ( ( `  S )..^ ( ( `  S )  +  ( `  T ) ) )  /\  ( ( 0..^ ( `  S )
)  i^i  ( ( `  S )..^ ( ( `  S )  +  ( `  T ) ) ) )  =  (/) )  ->  -.  I  e.  (
0..^ ( `  S )
) )
1210, 11mpan2 425 . . . . 5  |-  ( I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) )  ->  -.  I  e.  (
0..^ ( `  S )
) )
13123ad2ant3 1023 . . . 4  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  -.  I  e.  ( 0..^ ( `  S
) ) )
1413iffalsed 3585 . . 3  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  if ( I  e.  ( 0..^ ( `  S ) ) ,  ( S `  I
) ,  ( T `
 ( I  -  ( `  S ) ) ) )  =  ( T `  ( I  -  ( `  S
) ) ) )
159, 14sylan9eqr 2261 . 2  |-  ( ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S )..^ ( ( `  S )  +  ( `  T ) ) ) )  /\  x  =  I )  ->  if ( x  e.  (
0..^ ( `  S )
) ,  ( S `
 x ) ,  ( T `  (
x  -  ( `  S
) ) ) )  =  ( T `  ( I  -  ( `  S ) ) ) )
161adantr 276 . . . . 5  |-  ( ( S  e. Word  B  /\  T  e. Word  B )  ->  S  e.  Fin )
17 hashcl 10948 . . . . 5  |-  ( S  e.  Fin  ->  ( `  S )  e.  NN0 )
18 fzoss1 10315 . . . . . 6  |-  ( ( `  S )  e.  (
ZZ>= `  0 )  -> 
( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) )  C_  ( 0..^ ( ( `  S
)  +  ( `  T
) ) ) )
19 nn0uz 9703 . . . . . 6  |-  NN0  =  ( ZZ>= `  0 )
2018, 19eleq2s 2301 . . . . 5  |-  ( ( `  S )  e.  NN0  ->  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) )  C_  ( 0..^ ( ( `  S
)  +  ( `  T
) ) ) )
2116, 17, 203syl 17 . . . 4  |-  ( ( S  e. Word  B  /\  T  e. Word  B )  ->  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) )  C_  ( 0..^ ( ( `  S
)  +  ( `  T
) ) ) )
2221sseld 3196 . . 3  |-  ( ( S  e. Word  B  /\  T  e. Word  B )  ->  ( I  e.  ( ( `  S )..^ ( ( `  S )  +  ( `  T )
) )  ->  I  e.  ( 0..^ ( ( `  S )  +  ( `  T ) ) ) ) )
23223impia 1203 . 2  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  I  e.  ( 0..^ ( ( `  S
)  +  ( `  T
) ) ) )
24 simp2 1001 . . 3  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  T  e. Word  B
)
25 elfzoelz 10289 . . . . 5  |-  ( I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) )  ->  I  e.  ZZ )
26253ad2ant3 1023 . . . 4  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  I  e.  ZZ )
27 lencl 11020 . . . . . 6  |-  ( S  e. Word  B  ->  ( `  S )  e.  NN0 )
2827nn0zd 9513 . . . . 5  |-  ( S  e. Word  B  ->  ( `  S )  e.  ZZ )
29283ad2ant1 1021 . . . 4  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  ( `  S )  e.  ZZ )
3026, 29zsubcld 9520 . . 3  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  ( I  -  ( `  S ) )  e.  ZZ )
31 fvexg 5608 . . 3  |-  ( ( T  e. Word  B  /\  ( I  -  ( `  S ) )  e.  ZZ )  ->  ( T `  ( I  -  ( `  S )
) )  e.  _V )
3224, 30, 31syl2anc 411 . 2  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  ( T `  ( I  -  ( `  S ) ) )  e.  _V )
335, 15, 23, 32fvmptd 5673 1  |-  ( ( S  e. Word  B  /\  T  e. Word  B  /\  I  e.  ( ( `  S
)..^ ( ( `  S
)  +  ( `  T
) ) ) )  ->  ( ( S ++  T ) `  I
)  =  ( T `
 ( I  -  ( `  S ) ) ) )
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 104    /\ w3a 981    = wceq 1373    e. wcel 2177   _Vcvv 2773    i^i cin 3169    C_ wss 3170   (/)c0 3464   ifcif 3575    |-> cmpt 4113   ` cfv 5280  (class class class)co 5957   Fincfn 6840   0cc0 7945    + caddc 7948    - cmin 8263   NN0cn0 9315   ZZcz 9392   ZZ>=cuz 9668  ..^cfzo 10284  ♯chash 10942  Word cword 11016   ++ cconcat 11069
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 615  ax-in2 616  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2179  ax-14 2180  ax-ext 2188  ax-coll 4167  ax-sep 4170  ax-nul 4178  ax-pow 4226  ax-pr 4261  ax-un 4488  ax-setind 4593  ax-iinf 4644  ax-cnex 8036  ax-resscn 8037  ax-1cn 8038  ax-1re 8039  ax-icn 8040  ax-addcl 8041  ax-addrcl 8042  ax-mulcl 8043  ax-addcom 8045  ax-addass 8047  ax-distr 8049  ax-i2m1 8050  ax-0lt1 8051  ax-0id 8053  ax-rnegex 8054  ax-cnre 8056  ax-pre-ltirr 8057  ax-pre-ltwlin 8058  ax-pre-lttrn 8059  ax-pre-apti 8060  ax-pre-ltadd 8061
This theorem depends on definitions:  df-bi 117  df-dc 837  df-3or 982  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ne 2378  df-nel 2473  df-ral 2490  df-rex 2491  df-reu 2492  df-rab 2494  df-v 2775  df-sbc 3003  df-csb 3098  df-dif 3172  df-un 3174  df-in 3176  df-ss 3183  df-nul 3465  df-if 3576  df-pw 3623  df-sn 3644  df-pr 3645  df-op 3647  df-uni 3857  df-int 3892  df-iun 3935  df-br 4052  df-opab 4114  df-mpt 4115  df-tr 4151  df-id 4348  df-iord 4421  df-on 4423  df-ilim 4424  df-suc 4426  df-iom 4647  df-xp 4689  df-rel 4690  df-cnv 4691  df-co 4692  df-dm 4693  df-rn 4694  df-res 4695  df-ima 4696  df-iota 5241  df-fun 5282  df-fn 5283  df-f 5284  df-f1 5285  df-fo 5286  df-f1o 5287  df-fv 5288  df-riota 5912  df-ov 5960  df-oprab 5961  df-mpo 5962  df-1st 6239  df-2nd 6240  df-recs 6404  df-frec 6490  df-1o 6515  df-er 6633  df-en 6841  df-dom 6842  df-fin 6843  df-pnf 8129  df-mnf 8130  df-xr 8131  df-ltxr 8132  df-le 8133  df-sub 8265  df-neg 8266  df-inn 9057  df-n0 9316  df-z 9393  df-uz 9669  df-fz 10151  df-fzo 10285  df-ihash 10943  df-word 11017  df-concat 11070
This theorem is referenced by:  ccatval3  11078  ccatsymb  11081  ccatval21sw  11084  ccatlid  11085  ccatass  11087  ccatrn  11088  lswccatn0lsw  11090  ccats1val2  11115  ccatswrd  11146  ccatpfx  11177
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