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Theorem uhgrvtxedgiedgb 16264
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 16180 . . . . . 6  |-  ( G  e. UHGraph  ->  (Edg `  G
)  =  ran  (iEdg `  G ) )
2 uhgrvtxedgiedgb.e . . . . . 6  |-  E  =  (Edg `  G )
3 uhgrvtxedgiedgb.i . . . . . . 7  |-  I  =  (iEdg `  G )
43rneqi 4990 . . . . . 6  |-  ran  I  =  ran  (iEdg `  G
)
51, 2, 43eqtr4g 2292 . . . . 5  |-  ( G  e. UHGraph  ->  E  =  ran  I )
65rexeqdv 2750 . . . 4  |-  ( G  e. UHGraph  ->  ( E. e  e.  E  U  e.  e 
<->  E. e  e.  ran  I  U  e.  e
) )
73uhgrfun 16198 . . . . . 6  |-  ( G  e. UHGraph  ->  Fun  I )
87funfnd 5388 . . . . 5  |-  ( G  e. UHGraph  ->  I  Fn  dom  I )
9 eleq2 2298 . . . . . 6  |-  ( e  =  ( I `  i )  ->  ( U  e.  e  <->  U  e.  ( I `  i
) ) )
109rexrn 5819 . . . . 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 1398    e. wcel 2205   E.wrex 2523   dom cdm 4754   ran crn 4755    Fn wfn 5352   ` cfv 5357  iEdgciedg 16134  Edgcedg 16178  UHGraphcuhgr 16188
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 2207  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-cnex 8234  ax-resscn 8235  ax-1cn 8236  ax-1re 8237  ax-icn 8238  ax-addcl 8239  ax-addrcl 8240  ax-mulcl 8241  ax-addcom 8243  ax-mulcom 8244  ax-addass 8245  ax-mulass 8246  ax-distr 8247  ax-i2m1 8248  ax-1rid 8250  ax-0id 8251  ax-rnegex 8252  ax-cnre 8254
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-if 3625  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-br 4115  df-opab 4177  df-mpt 4178  df-id 4419  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-fo 5363  df-fv 5365  df-riota 6011  df-ov 6061  df-oprab 6062  df-mpo 6063  df-1st 6347  df-2nd 6348  df-sub 8462  df-inn 9255  df-2 9313  df-3 9314  df-4 9315  df-5 9316  df-6 9317  df-7 9318  df-8 9319  df-9 9320  df-n0 9514  df-dec 9728  df-ndx 13299  df-slot 13300  df-base 13302  df-edgf 16126  df-vtx 16135  df-iedg 16136  df-edg 16179  df-uhgrm 16190
This theorem is referenced by: (None)
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