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

Theorem uhgrvtxedgiedgb 15956
Description: In a hypergraph, a vertex is incident with an edge iff it is contained in an element of the range of the edge function. (Contributed by AV, 24-Dec-2020.) (Revised by AV, 6-Jul-2022.)
Hypotheses
Ref Expression
uhgrvtxedgiedgb.i  |-  I  =  (iEdg `  G )
uhgrvtxedgiedgb.e  |-  E  =  (Edg `  G )
Assertion
Ref Expression
uhgrvtxedgiedgb  |-  ( ( G  e. UHGraph  /\  U  e.  V )  ->  ( E. i  e.  dom  I  U  e.  (
I `  i )  <->  E. e  e.  E  U  e.  e ) )
Distinct variable groups:    e, E    e, I, i    U, e, i
Allowed substitution hints:    E( i)    G( e, i)    V( e, i)

Proof of Theorem uhgrvtxedgiedgb
StepHypRef Expression
1 edgvalg 15875 . . . . . 6  |-  ( G  e. UHGraph  ->  (Edg `  G
)  =  ran  (iEdg `  G ) )
2 uhgrvtxedgiedgb.e . . . . . 6  |-  E  =  (Edg `  G )
3 uhgrvtxedgiedgb.i . . . . . . 7  |-  I  =  (iEdg `  G )
43rneqi 4952 . . . . . 6  |-  ran  I  =  ran  (iEdg `  G
)
51, 2, 43eqtr4g 2287 . . . . 5  |-  ( G  e. UHGraph  ->  E  =  ran  I )
65rexeqdv 2735 . . . 4  |-  ( G  e. UHGraph  ->  ( E. e  e.  E  U  e.  e 
<->  E. e  e.  ran  I  U  e.  e
) )
73uhgrfun 15892 . . . . . 6  |-  ( G  e. UHGraph  ->  Fun  I )
87funfnd 5349 . . . . 5  |-  ( G  e. UHGraph  ->  I  Fn  dom  I )
9 eleq2 2293 . . . . . 6  |-  ( e  =  ( I `  i )  ->  ( U  e.  e  <->  U  e.  ( I `  i
) ) )
109rexrn 5774 . . . . 5  |-  ( I  Fn  dom  I  -> 
( E. e  e. 
ran  I  U  e.  e  <->  E. i  e.  dom  I  U  e.  (
I `  i )
) )
118, 10syl 14 . . . 4  |-  ( G  e. UHGraph  ->  ( E. e  e.  ran  I  U  e.  e  <->  E. i  e.  dom  I  U  e.  (
I `  i )
) )
126, 11bitrd 188 . . 3  |-  ( G  e. UHGraph  ->  ( E. e  e.  E  U  e.  e 
<->  E. i  e.  dom  I  U  e.  (
I `  i )
) )
1312adantr 276 . 2  |-  ( ( G  e. UHGraph  /\  U  e.  V )  ->  ( E. e  e.  E  U  e.  e  <->  E. i  e.  dom  I  U  e.  ( I `  i
) ) )
1413bicomd 141 1  |-  ( ( G  e. UHGraph  /\  U  e.  V )  ->  ( E. i  e.  dom  I  U  e.  (
I `  i )  <->  E. e  e.  E  U  e.  e ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    = wceq 1395    e. wcel 2200   E.wrex 2509   dom cdm 4719   ran crn 4720    Fn wfn 5313   ` cfv 5318  iEdgciedg 15829  Edgcedg 15873  UHGraphcuhgr 15882
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 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-cnex 8101  ax-resscn 8102  ax-1cn 8103  ax-1re 8104  ax-icn 8105  ax-addcl 8106  ax-addrcl 8107  ax-mulcl 8108  ax-addcom 8110  ax-mulcom 8111  ax-addass 8112  ax-mulass 8113  ax-distr 8114  ax-i2m1 8115  ax-1rid 8117  ax-0id 8118  ax-rnegex 8119  ax-cnre 8121
This theorem depends on definitions:  df-bi 117  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-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-if 3603  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-int 3924  df-br 4084  df-opab 4146  df-mpt 4147  df-id 4384  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-res 4731  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-fo 5324  df-fv 5326  df-riota 5960  df-ov 6010  df-oprab 6011  df-mpo 6012  df-1st 6292  df-2nd 6293  df-sub 8330  df-inn 9122  df-2 9180  df-3 9181  df-4 9182  df-5 9183  df-6 9184  df-7 9185  df-8 9186  df-9 9187  df-n0 9381  df-dec 9590  df-ndx 13050  df-slot 13051  df-base 13053  df-edgf 15821  df-vtx 15830  df-iedg 15831  df-edg 15874  df-uhgrm 15884
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator