ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  strext Unicode version

Theorem strext 12783
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
StepHypRef Expression
1 strext.f . . . . 5  |-  ( ph  ->  F Struct  <. A ,  B >. )
2 isstructim 12692 . . . . 5  |-  ( F Struct  <. A ,  B >.  -> 
( ( A  e.  NN  /\  B  e.  NN  /\  A  <_  B )  /\  Fun  ( F  \  { (/) } )  /\  dom  F  C_  ( A ... B
) ) )
31, 2syl 14 . . . 4  |-  ( ph  ->  ( ( A  e.  NN  /\  B  e.  NN  /\  A  <_  B )  /\  Fun  ( F  \  { (/) } )  /\  dom  F  C_  ( A ... B
) ) )
43simp1d 1011 . . 3  |-  ( ph  ->  ( A  e.  NN  /\  B  e.  NN  /\  A  <_  B ) )
54simp1d 1011 . 2  |-  ( ph  ->  A  e.  NN )
64simp2d 1012 . . 3  |-  ( ph  ->  B  e.  NN )
7 strext.c . . 3  |-  ( ph  ->  C  e.  ( ZZ>= `  B ) )
8 eluznn 9674 . . 3  |-  ( ( B  e.  NN  /\  C  e.  ( ZZ>= `  B ) )  ->  C  e.  NN )
96, 7, 8syl2anc 411 . 2  |-  ( ph  ->  C  e.  NN )
105nnred 9003 . . 3  |-  ( ph  ->  A  e.  RR )
116nnred 9003 . . 3  |-  ( ph  ->  B  e.  RR )
129nnred 9003 . . 3  |-  ( ph  ->  C  e.  RR )
134simp3d 1013 . . 3  |-  ( ph  ->  A  <_  B )
14 eluzle 9613 . . . 4  |-  ( C  e.  ( ZZ>= `  B
)  ->  B  <_  C )
157, 14syl 14 . . 3  |-  ( ph  ->  B  <_  C )
1610, 11, 12, 13, 15letrd 8150 . 2  |-  ( ph  ->  A  <_  C )
173simp2d 1012 . 2  |-  ( ph  ->  Fun  ( F  \  { (/) } ) )
18 structex 12690 . . 3  |-  ( F Struct  <. A ,  B >.  ->  F  e.  _V )
191, 18syl 14 . 2  |-  ( ph  ->  F  e.  _V )
203simp3d 1013 . . 3  |-  ( ph  ->  dom  F  C_  ( A ... B ) )
21 fzss2 10139 . . . 4  |-  ( C  e.  ( ZZ>= `  B
)  ->  ( A ... B )  C_  ( A ... C ) )
227, 21syl 14 . . 3  |-  ( ph  ->  ( A ... B
)  C_  ( A ... C ) )
2320, 22sstrd 3193 . 2  |-  ( ph  ->  dom  F  C_  ( A ... C ) )
24 isstructr 12693 . 2  |-  ( ( ( A  e.  NN  /\  C  e.  NN  /\  A  <_  C )  /\  ( Fun  ( F  \  { (/) } )  /\  F  e.  _V  /\  dom  F 
C_  ( A ... C ) ) )  ->  F Struct  <. A ,  C >. )
255, 9, 16, 17, 19, 23, 24syl33anc 1264 1  |-  ( ph  ->  F Struct  <. A ,  C >. )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 980    e. wcel 2167   _Vcvv 2763    \ cdif 3154    C_ wss 3157   (/)c0 3450   {csn 3622   <.cop 3625   class class class wbr 4033   dom cdm 4663   Fun wfun 5252   ` cfv 5258  (class class class)co 5922    <_ cle 8062   NNcn 8990   ZZ>=cuz 9601   ...cfz 10083   Struct cstr 12674
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 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-sep 4151  ax-pow 4207  ax-pr 4242  ax-un 4468  ax-setind 4573  ax-cnex 7970  ax-resscn 7971  ax-1cn 7972  ax-1re 7973  ax-icn 7974  ax-addcl 7975  ax-addrcl 7976  ax-mulcl 7977  ax-addcom 7979  ax-addass 7981  ax-distr 7983  ax-i2m1 7984  ax-0lt1 7985  ax-0id 7987  ax-rnegex 7988  ax-cnre 7990  ax-pre-ltirr 7991  ax-pre-ltwlin 7992  ax-pre-lttrn 7993  ax-pre-ltadd 7995
This theorem depends on definitions:  df-bi 117  df-3or 981  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ne 2368  df-nel 2463  df-ral 2480  df-rex 2481  df-reu 2482  df-rab 2484  df-v 2765  df-sbc 2990  df-dif 3159  df-un 3161  df-in 3163  df-ss 3170  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-uni 3840  df-int 3875  df-br 4034  df-opab 4095  df-mpt 4096  df-id 4328  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-rn 4674  df-res 4675  df-ima 4676  df-iota 5219  df-fun 5260  df-fn 5261  df-f 5262  df-fv 5266  df-riota 5877  df-ov 5925  df-oprab 5926  df-mpo 5927  df-pnf 8063  df-mnf 8064  df-xr 8065  df-ltxr 8066  df-le 8067  df-sub 8199  df-neg 8200  df-inn 8991  df-z 9327  df-uz 9602  df-fz 10084  df-struct 12680
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator