Theorem strext 13307

Description: Extending the upper range of a structure. This works because when we say that a structure has components in A ... C we are not saying that every slot in that range is present, just that all the slots that are present are within that range. (Contributed by Jim Kingdon, 26-Feb-2025.)

Hypotheses

Ref	Expression
strext.f	|- ( ph -> F Struct <. A , B >. )
strext.c	|- ( ph -> C e. ( ZZ>= ` B ) )

Assertion

Ref	Expression
strext	|- ( ph -> F Struct <. A , C >. )

Proof of Theorem strext

Step	Hyp	Ref	Expression
1		strext.f	. . . . 5 |- ( ph -> F Struct <. A , B >. )
2		isstructim 13215	. . . . 5 |- ( F Struct <. A , B >. -> ( ( A e. NN /\ B e. NN /\ A <_ B ) /\ Fun ( F \ { (/) } ) /\ dom F C_ ( A ... B ) ) )
3	1, 2	syl 14	. . . 4 |- ( ph -> ( ( A e. NN /\ B e. NN /\ A <_ B ) /\ Fun ( F \ { (/) } ) /\ dom F C_ ( A ... B ) ) )
4	3	simp1d 1036	. . 3 |- ( ph -> ( A e. NN /\ B e. NN /\ A <_ B ) )
5	4	simp1d 1036	. 2 |- ( ph -> A e. NN )
6	4	simp2d 1037	. . 3 |- ( ph -> B e. NN )
7		strext.c	. . 3 |- ( ph -> C e. ( ZZ>= ` B ) )
8		eluznn 9928	. . 3 |- ( ( B e. NN /\ C e. ( ZZ>= ` B ) ) -> C e. NN )
9	6, 7, 8	syl2anc 411	. 2 |- ( ph -> C e. NN )
10	5	nnred 9246	. . 3 |- ( ph -> A e. RR )
11	6	nnred 9246	. . 3 |- ( ph -> B e. RR )
12	9	nnred 9246	. . 3 |- ( ph -> C e. RR )
13	4	simp3d 1038	. . 3 |- ( ph -> A <_ B )
14		eluzle 9862	. . . 4 |- ( C e. ( ZZ>= ` B ) -> B <_ C )
15	7, 14	syl 14	. . 3 |- ( ph -> B <_ C )
16	10, 11, 12, 13, 15	letrd 8393	. 2 |- ( ph -> A <_ C )
17	3	simp2d 1037	. 2 |- ( ph -> Fun ( F \ { (/) } ) )
18		structex 13213	. . 3 |- ( F Struct <. A , B >. -> F e. _V )
19	1, 18	syl 14	. 2 |- ( ph -> F e. _V )
20	3	simp3d 1038	. . 3 |- ( ph -> dom F C_ ( A ... B ) )
21		fzss2 10394	. . . 4 |- ( C e. ( ZZ>= ` B ) -> ( A ... B ) C_ ( A ... C ) )
22	7, 21	syl 14	. . 3 |- ( ph -> ( A ... B ) C_ ( A ... C ) )
23	20, 22	sstrd 3247	. 2 |- ( ph -> dom F C_ ( A ... C ) )
24		isstructr 13216	. 2 |- ( ( ( A e. NN /\ C e. NN /\ A <_ C ) /\ ( Fun ( F \ { (/) } ) /\ F e. _V /\ dom F C_ ( A ... C ) ) ) -> F Struct <. A , C >. )
25	5, 9, 16, 17, 19, 23, 24	syl33anc 1289	1 |- ( ph -> F Struct <. A , C >. )

Syntax hints:   -> wi 4   /\ w3a 1005   e. wcel 2203   _Vcvv 2812   \ cdif 3207   C_ wss 3210   (/)c0 3507   {csn 3688   <.cop 3691   class class class wbr 4108   dom cdm 4748   Fun wfun 5345   ` cfv 5351  (class class class)co 6049   <_ cle 8305   NNcn 9233   ZZ>=cuz 9849   ...cfz 10338   Struct cstr 13197

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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-sep 4227  ax-pow 4286  ax-pr 4321  ax-un 4553  ax-setind 4658  ax-cnex 8214  ax-resscn 8215  ax-1cn 8216  ax-1re 8217  ax-icn 8218  ax-addcl 8219  ax-addrcl 8220  ax-mulcl 8221  ax-addcom 8223  ax-addass 8225  ax-distr 8227  ax-i2m1 8228  ax-0lt1 8229  ax-0id 8231  ax-rnegex 8232  ax-cnre 8234  ax-pre-ltirr 8235  ax-pre-ltwlin 8236  ax-pre-lttrn 8237  ax-pre-ltadd 8239

This theorem depends on definitions:  df-bi 117  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-reu 2527  df-rab 2529  df-v 2814  df-sbc 3042  df-dif 3212  df-un 3214  df-in 3216  df-ss 3223  df-pw 3670  df-sn 3694  df-pr 3695  df-op 3697  df-uni 3914  df-int 3949  df-br 4109  df-opab 4171  df-mpt 4172  df-id 4413  df-xp 4754  df-rel 4755  df-cnv 4756  df-co 4757  df-dm 4758  df-rn 4759  df-res 4760  df-ima 4761  df-iota 5311  df-fun 5353  df-fn 5354  df-f 5355  df-fv 5359  df-riota 6002  df-ov 6052  df-oprab 6053  df-mpo 6054  df-pnf 8306  df-mnf 8307  df-xr 8308  df-ltxr 8309  df-le 8310  df-sub 8442  df-neg 8443  df-inn 9234  df-z 9574  df-uz 9850  df-fz 10339  df-struct 13203

This theorem is referenced by: (None)