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Theorem strressid 13425
Description: Behavior of trivial restriction. (Contributed by Stefan O'Rear, 29-Nov-2014.) (Revised by Jim Kingdon, 17-Jan-2025.)
Hypotheses
Ref Expression
strressid.b  |-  ( ph  ->  B  =  ( Base `  W ) )
strressid.s  |-  ( ph  ->  W Struct  <. M ,  N >. )
strressid.f  |-  ( ph  ->  Fun  W )
strressid.bw  |-  ( ph  ->  ( Base `  ndx )  e.  dom  W )
Assertion
Ref Expression
strressid  |-  ( ph  ->  ( Ws  B )  =  W )

Proof of Theorem strressid
StepHypRef Expression
1 strressid.b . . . . . 6  |-  ( ph  ->  B  =  ( Base `  W ) )
21ineq1d 3431 . . . . 5  |-  ( ph  ->  ( B  i^i  ( Base `  W ) )  =  ( ( Base `  W )  i^i  ( Base `  W ) ) )
3 inidm 3440 . . . . 5  |-  ( (
Base `  W )  i^i  ( Base `  W
) )  =  (
Base `  W )
42, 3eqtrdi 2287 . . . 4  |-  ( ph  ->  ( B  i^i  ( Base `  W ) )  =  ( Base `  W
) )
54opeq2d 3911 . . 3  |-  ( ph  -> 
<. ( Base `  ndx ) ,  ( B  i^i  ( Base `  W
) ) >.  =  <. (
Base `  ndx ) ,  ( Base `  W
) >. )
65oveq2d 6101 . 2  |-  ( ph  ->  ( W sSet  <. ( Base `  ndx ) ,  ( B  i^i  ( Base `  W ) )
>. )  =  ( W sSet  <. ( Base `  ndx ) ,  ( Base `  W ) >. )
)
7 strressid.s . . . 4  |-  ( ph  ->  W Struct  <. M ,  N >. )
8 structex 13364 . . . 4  |-  ( W Struct  <. M ,  N >.  ->  W  e.  _V )
97, 8syl 14 . . 3  |-  ( ph  ->  W  e.  _V )
10 basfn 13411 . . . . 5  |-  Base  Fn  _V
11 funfvex 5712 . . . . . 6  |-  ( ( Fun  Base  /\  W  e. 
dom  Base )  ->  ( Base `  W )  e. 
_V )
1211funfni 5483 . . . . 5  |-  ( (
Base  Fn  _V  /\  W  e.  _V )  ->  ( Base `  W )  e. 
_V )
1310, 9, 12sylancr 418 . . . 4  |-  ( ph  ->  ( Base `  W
)  e.  _V )
141, 13eqeltrd 2315 . . 3  |-  ( ph  ->  B  e.  _V )
15 ressvalsets 13418 . . 3  |-  ( ( W  e.  _V  /\  B  e.  _V )  ->  ( Ws  B )  =  ( W sSet  <. ( Base `  ndx ) ,  ( B  i^i  ( Base `  W
) ) >. )
)
169, 14, 15syl2anc 415 . 2  |-  ( ph  ->  ( Ws  B )  =  ( W sSet  <. ( Base `  ndx ) ,  ( B  i^i  ( Base `  W
) ) >. )
)
17 baseid 13406 . . 3  |-  Base  = Slot  ( Base `  ndx )
18 strressid.f . . 3  |-  ( ph  ->  Fun  W )
19 strressid.bw . . 3  |-  ( ph  ->  ( Base `  ndx )  e.  dom  W )
2017, 7, 18, 19strsetsid 13385 . 2  |-  ( ph  ->  W  =  ( W sSet  <. ( Base `  ndx ) ,  ( Base `  W ) >. )
)
216, 16, 203eqtr4d 2281 1  |-  ( ph  ->  ( Ws  B )  =  W )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    = wceq 1402    e. wcel 2209   _Vcvv 2821    i^i cin 3219   <.cop 3712   class class class wbr 4130   dom cdm 4774   Fun wfun 5371    Fn wfn 5372   ` cfv 5377  (class class class)co 6085   Struct cstr 13348   ndxcnx 13349   sSet csts 13350   Basecbs 13352   ↾s cress 13353
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-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684  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-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-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  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-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-struct 13354  df-ndx 13355  df-slot 13356  df-base 13358  df-sets 13359  df-iress 13360
This theorem is used by: (None)
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