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Theorem uhgrvtxedgiedgb 15982
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 15900 . . . . . 6  |-  ( G  e. UHGraph  ->  (Edg `  G
)  =  ran  (iEdg `  G ) )
2 uhgrvtxedgiedgb.e . . . . . 6  |-  E  =  (Edg `  G )
3 uhgrvtxedgiedgb.i . . . . . . 7  |-  I  =  (iEdg `  G )
43rneqi 4958 . . . . . 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 15918 . . . . . 6  |-  ( G  e. UHGraph  ->  Fun  I )
87funfnd 5355 . . . . 5  |-  ( G  e. UHGraph  ->  I  Fn  dom  I )
9 eleq2 2293 . . . . . 6  |-  ( e  =  ( I `  i )  ->  ( U  e.  e  <->  U  e.  ( I `  i
) ) )
109rexrn 5780 . . . . 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 4723   ran crn 4724    Fn wfn 5319   ` cfv 5324  iEdgciedg 15854  Edgcedg 15898  UHGraphcuhgr 15908
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-mulcom 8123  ax-addass 8124  ax-mulass 8125  ax-distr 8126  ax-i2m1 8127  ax-1rid 8129  ax-0id 8130  ax-rnegex 8131  ax-cnre 8133
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 2802  df-sbc 3030  df-csb 3126  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-if 3604  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-iota 5284  df-fun 5326  df-fn 5327  df-f 5328  df-fo 5330  df-fv 5332  df-riota 5966  df-ov 6016  df-oprab 6017  df-mpo 6018  df-1st 6298  df-2nd 6299  df-sub 8342  df-inn 9134  df-2 9192  df-3 9193  df-4 9194  df-5 9195  df-6 9196  df-7 9197  df-8 9198  df-9 9199  df-n0 9393  df-dec 9602  df-ndx 13075  df-slot 13076  df-base 13078  df-edgf 15846  df-vtx 15855  df-iedg 15856  df-edg 15899  df-uhgrm 15910
This theorem is referenced by: (None)
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