Theorem strressid 13144

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 -> ( W ↾s B ) = W )

Proof of Theorem strressid

Step	Hyp	Ref	Expression
1		strressid.b	. . . . . 6 |- ( ph -> B = ( Base ` W ) )
2	1	ineq1d 3405	. . . . 5 |- ( ph -> ( B i^i ( Base ` W ) ) = ( ( Base ` W ) i^i ( Base ` W ) ) )
3		inidm 3414	. . . . 5 |- ( ( Base ` W ) i^i ( Base ` W ) ) = ( Base ` W )
4	2, 3	eqtrdi 2278	. . . 4 |- ( ph -> ( B i^i ( Base ` W ) ) = ( Base ` W ) )
5	4	opeq2d 3867	. . 3 |- ( ph -> <. ( Base ` ndx ) , ( B i^i ( Base ` W ) ) >. = <. ( Base ` ndx ) , ( Base ` W ) >. )
6	5	oveq2d 6029	. 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 13084	. . . 4 |- ( W Struct <. M , N >. -> W e. _V )
9	7, 8	syl 14	. . 3 |- ( ph -> W e. _V )
10		basfn 13131	. . . . 5 |- Base Fn _V
11		funfvex 5652	. . . . . 6 |- ( ( Fun Base /\ W e. dom Base ) -> ( Base ` W ) e. _V )
12	11	funfni 5429	. . . . 5 |- ( ( Base Fn _V /\ W e. _V ) -> ( Base ` W ) e. _V )
13	10, 9, 12	sylancr 414	. . . 4 |- ( ph -> ( Base ` W ) e. _V )
14	1, 13	eqeltrd 2306	. . 3 |- ( ph -> B e. _V )
15		ressvalsets 13137	. . 3 |- ( ( W e. _V /\ B e. _V ) -> ( W ↾s B ) = ( W sSet <. ( Base ` ndx ) , ( B i^i ( Base ` W ) ) >. ) )
16	9, 14, 15	syl2anc 411	. 2 |- ( ph -> ( W ↾s B ) = ( W sSet <. ( Base ` ndx ) , ( B i^i ( Base ` W ) ) >. ) )
17		baseid 13126	. . 3 |- Base = Slot ( Base ` ndx )
18		strressid.f	. . 3 |- ( ph -> Fun W )
19		strressid.bw	. . 3 |- ( ph -> ( Base ` ndx ) e. dom W )
20	17, 7, 18, 19	strsetsid 13105	. 2 |- ( ph -> W = ( W sSet <. ( Base ` ndx ) , ( Base ` W ) >. ) )
21	6, 16, 20	3eqtr4d 2272	1 |- ( ph -> ( W ↾s B ) = W )

Syntax hints:   -> wi 4   = wceq 1395   e. wcel 2200   _Vcvv 2800   i^i cin 3197   <.cop 3670   class class class wbr 4086   dom cdm 4723   Fun wfun 5318   Fn wfn 5319   ` cfv 5324  (class class class)co 6013   Struct cstr 13068   ndxcnx 13069   sSet csts 13070   Basecbs 13072   ↾_s cress 13073

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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4205  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-setind 4633  ax-cnex 8113  ax-resscn 8114  ax-1cn 8115  ax-1re 8116  ax-icn 8117  ax-addcl 8118  ax-addrcl 8119  ax-mulcl 8120  ax-addcom 8122  ax-addass 8124  ax-distr 8126  ax-i2m1 8127  ax-0lt1 8128  ax-0id 8130  ax-rnegex 8131  ax-cnre 8133  ax-pre-ltirr 8134  ax-pre-ltwlin 8135  ax-pre-lttrn 8136  ax-pre-ltadd 8138

This theorem depends on definitions:  df-bi 117  df-dc 840  df-3or 1003  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2802  df-sbc 3030  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-int 3927  df-br 4087  df-opab 4149  df-mpt 4150  df-id 4388  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-res 4735  df-ima 4736  df-iota 5284  df-fun 5326  df-fn 5327  df-f 5328  df-f1 5329  df-fo 5330  df-f1o 5331  df-fv 5332  df-riota 5966  df-ov 6016  df-oprab 6017  df-mpo 6018  df-pnf 8206  df-mnf 8207  df-xr 8208  df-ltxr 8209  df-le 8210  df-sub 8342  df-neg 8343  df-inn 9134  df-n0 9393  df-z 9470  df-uz 9746  df-fz 10234  df-struct 13074  df-ndx 13075  df-slot 13076  df-base 13078  df-sets 13079  df-iress 13080

This theorem is referenced by: (None)