Theorem strslfv3 12953

Description: Variant on strslfv 12952 for large structures. (Contributed by Mario Carneiro, 10-Jan-2017.) (Revised by Jim Kingdon, 30-Jan-2023.)

Hypotheses

Ref	Expression
strfv3.u	|- ( ph -> U = S )
strslfv3.s	|- ( ph -> S Struct X )
strslfv3.e	|- ( E = Slot ( E ` ndx ) /\ ( E ` ndx ) e. NN )
strslfv3.n	|- ( ph -> { <. ( E ` ndx ) , C >. } C_ S )
strfv3.c	|- ( ph -> C e. V )
strfv3.a	|- A = ( E ` U )

Assertion

Ref	Expression
strslfv3	|- ( ph -> A = C )

Proof of Theorem strslfv3

Step	Hyp	Ref	Expression
1		strfv3.a	. 2 |- A = ( E ` U )
2		strslfv3.e	. . 3 |- ( E = Slot ( E ` ndx ) /\ ( E ` ndx ) e. NN )
3		strfv3.u	. . . 4 |- ( ph -> U = S )
4		strslfv3.s	. . . . 5 |- ( ph -> S Struct X )
5		structex 12919	. . . . 5 |- ( S Struct X -> S e. _V )
6	4, 5	syl 14	. . . 4 |- ( ph -> S e. _V )
7	3, 6	eqeltrd 2283	. . 3 |- ( ph -> U e. _V )
8		structfung 12924	. . . . 5 |- ( S Struct X -> Fun `' `' S )
9	4, 8	syl 14	. . . 4 |- ( ph -> Fun `' `' S )
10	3	cnveqd 4862	. . . . . 6 |- ( ph -> `' U = `' S )
11	10	cnveqd 4862	. . . . 5 |- ( ph -> `' `' U = `' `' S )
12	11	funeqd 5302	. . . 4 |- ( ph -> ( Fun `' `' U <-> Fun `' `' S ) )
13	9, 12	mpbird 167	. . 3 |- ( ph -> Fun `' `' U )
14		strslfv3.n	. . . . 5 |- ( ph -> { <. ( E ` ndx ) , C >. } C_ S )
15	2	simpri 113	. . . . . . 7 |- ( E ` ndx ) e. NN
16		strfv3.c	. . . . . . 7 |- ( ph -> C e. V )
17		opexg 4280	. . . . . . 7 |- ( ( ( E ` ndx ) e. NN /\ C e. V ) -> <. ( E ` ndx ) , C >. e. _V )
18	15, 16, 17	sylancr 414	. . . . . 6 |- ( ph -> <. ( E ` ndx ) , C >. e. _V )
19		snssg 3773	. . . . . 6 |- ( <. ( E ` ndx ) , C >. e. _V -> ( <. ( E ` ndx ) , C >. e. S <-> { <. ( E ` ndx ) , C >. } C_ S ) )
20	18, 19	syl 14	. . . . 5 |- ( ph -> ( <. ( E ` ndx ) , C >. e. S <-> { <. ( E ` ndx ) , C >. } C_ S ) )
21	14, 20	mpbird 167	. . . 4 |- ( ph -> <. ( E ` ndx ) , C >. e. S )
22	21, 3	eleqtrrd 2286	. . 3 |- ( ph -> <. ( E ` ndx ) , C >. e. U )
23	2, 7, 13, 22, 16	strslfv2d 12950	. 2 |- ( ph -> C = ( E ` U ) )
24	1, 23	eqtr4id 2258	1 |- ( ph -> A = C )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1373   e. wcel 2177   _Vcvv 2773   C_ wss 3170   {csn 3638   <.cop 3641   class class class wbr 4051   `'ccnv 4682   Fun wfun 5274   ` cfv 5280   NNcn 9056   Struct cstr 12903   ndxcnx 12904  Slot cslot 12906

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-sep 4170  ax-pow 4226  ax-pr 4261  ax-un 4488

This theorem depends on definitions:  df-bi 117  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-ral 2490  df-rex 2491  df-rab 2494  df-v 2775  df-sbc 3003  df-dif 3172  df-un 3174  df-in 3176  df-ss 3183  df-nul 3465  df-pw 3623  df-sn 3644  df-pr 3645  df-op 3647  df-uni 3857  df-br 4052  df-opab 4114  df-mpt 4115  df-id 4348  df-xp 4689  df-rel 4690  df-cnv 4691  df-co 4692  df-dm 4693  df-rn 4694  df-res 4695  df-iota 5241  df-fun 5282  df-fv 5288  df-struct 12909  df-slot 12911

This theorem is referenced by:  prdsbaslemss  13181