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

Theorem umgrislfupgrdom 15981
Description: A multigraph is a loop-free pseudograph. (Contributed by AV, 27-Jan-2021.)
Hypotheses
Ref Expression
umgrislfupgr.v  |-  V  =  (Vtx `  G )
umgrislfupgr.i  |-  I  =  (iEdg `  G )
Assertion
Ref Expression
umgrislfupgrdom  |-  ( G  e. UMGraph 
<->  ( G  e. UPGraph  /\  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x } ) )
Distinct variable groups:    x, G    x, V
Allowed substitution hint:    I( x)

Proof of Theorem umgrislfupgrdom
StepHypRef Expression
1 umgrupgr 15962 . . 3  |-  ( G  e. UMGraph  ->  G  e. UPGraph )
2 umgrislfupgr.v . . . . 5  |-  V  =  (Vtx `  G )
3 umgrislfupgr.i . . . . 5  |-  I  =  (iEdg `  G )
42, 3umgrfen 15957 . . . 4  |-  ( G  e. UMGraph  ->  I : dom  I
--> { x  e.  ~P V  |  x  ~~  2o } )
5 id 19 . . . . 5  |-  ( I : dom  I --> { x  e.  ~P V  |  x 
~~  2o }  ->  I : dom  I --> { x  e.  ~P V  |  x 
~~  2o } )
6 ensymb 6953 . . . . . . . . 9  |-  ( 2o 
~~  x  <->  x  ~~  2o )
7 endom 6935 . . . . . . . . 9  |-  ( 2o 
~~  x  ->  2o  ~<_  x )
86, 7sylbir 135 . . . . . . . 8  |-  ( x 
~~  2o  ->  2o  ~<_  x )
98a1i 9 . . . . . . 7  |-  ( x  e.  ~P V  -> 
( x  ~~  2o  ->  2o  ~<_  x ) )
109ss2rabi 3309 . . . . . 6  |-  { x  e.  ~P V  |  x 
~~  2o }  C_  { x  e.  ~P V  |  2o  ~<_  x }
1110a1i 9 . . . . 5  |-  ( I : dom  I --> { x  e.  ~P V  |  x 
~~  2o }  ->  { x  e.  ~P V  |  x  ~~  2o }  C_ 
{ x  e.  ~P V  |  2o  ~<_  x }
)
125, 11fssd 5495 . . . 4  |-  ( I : dom  I --> { x  e.  ~P V  |  x 
~~  2o }  ->  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x } )
134, 12syl 14 . . 3  |-  ( G  e. UMGraph  ->  I : dom  I
--> { x  e.  ~P V  |  2o  ~<_  x }
)
141, 13jca 306 . 2  |-  ( G  e. UMGraph  ->  ( G  e. UPGraph  /\  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x }
) )
152, 3upgrfen 15947 . . . 4  |-  ( G  e. UPGraph  ->  I : dom  I
--> { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) } )
16 fin 5523 . . . . 5  |-  ( I : dom  I --> ( { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) }  i^i  { x  e.  ~P V  |  2o  ~<_  x } )  <->  ( I : dom  I --> { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) }  /\  I : dom  I
--> { x  e.  ~P V  |  2o  ~<_  x }
) )
17 umgrislfupgrenlem 15980 . . . . . 6  |-  ( { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) }  i^i  { x  e.  ~P V  |  2o  ~<_  x } )  =  {
x  e.  ~P V  |  x  ~~  2o }
18 feq3 5467 . . . . . 6  |-  ( ( { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) }  i^i  {
x  e.  ~P V  |  2o  ~<_  x }
)  =  { x  e.  ~P V  |  x 
~~  2o }  ->  ( I : dom  I --> ( { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) }  i^i  {
x  e.  ~P V  |  2o  ~<_  x }
)  <->  I : dom  I
--> { x  e.  ~P V  |  x  ~~  2o } ) )
1917, 18ax-mp 5 . . . . 5  |-  ( I : dom  I --> ( { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) }  i^i  { x  e.  ~P V  |  2o  ~<_  x } )  <->  I : dom  I --> { x  e. 
~P V  |  x 
~~  2o } )
2016, 19sylbb1 137 . . . 4  |-  ( ( I : dom  I --> { x  e.  ~P V  |  ( x  ~~  1o  \/  x  ~~  2o ) }  /\  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x } )  ->  I : dom  I --> { x  e.  ~P V  |  x 
~~  2o } )
2115, 20sylan 283 . . 3  |-  ( ( G  e. UPGraph  /\  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x } )  ->  I : dom  I --> { x  e.  ~P V  |  x 
~~  2o } )
222, 3isumgren 15955 . . . 4  |-  ( G  e. UPGraph  ->  ( G  e. UMGraph  <->  I : dom  I --> { x  e.  ~P V  |  x 
~~  2o } ) )
2322adantr 276 . . 3  |-  ( ( G  e. UPGraph  /\  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x } )  ->  ( G  e. UMGraph  <->  I : dom  I
--> { x  e.  ~P V  |  x  ~~  2o } ) )
2421, 23mpbird 167 . 2  |-  ( ( G  e. UPGraph  /\  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x } )  ->  G  e. UMGraph )
2514, 24impbii 126 1  |-  ( G  e. UMGraph 
<->  ( G  e. UPGraph  /\  I : dom  I --> { x  e.  ~P V  |  2o  ~<_  x } ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    \/ wo 715    = wceq 1397    e. wcel 2202   {crab 2514    i^i cin 3199    C_ wss 3200   ~Pcpw 3652   class class class wbr 4088   dom cdm 4725   -->wf 5322   ` cfv 5326   1oc1o 6574   2oc2o 6575    ~~ cen 6906    ~<_ cdom 6907  Vtxcvtx 15862  iEdgciedg 15863  UPGraphcupgr 15941  UMGraphcumgr 15942
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-nul 4215  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-iinf 4686  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-addcom 8131  ax-mulcom 8132  ax-addass 8133  ax-mulass 8134  ax-distr 8135  ax-i2m1 8136  ax-1rid 8138  ax-0id 8139  ax-rnegex 8140  ax-cnre 8142
This theorem depends on definitions:  df-bi 117  df-dc 842  df-3or 1005  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-if 3606  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-br 4089  df-opab 4151  df-mpt 4152  df-tr 4188  df-id 4390  df-iord 4463  df-on 4465  df-suc 4468  df-iom 4689  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-1st 6302  df-2nd 6303  df-1o 6581  df-2o 6582  df-er 6701  df-en 6909  df-dom 6910  df-sub 8351  df-inn 9143  df-2 9201  df-3 9202  df-4 9203  df-5 9204  df-6 9205  df-7 9206  df-8 9207  df-9 9208  df-n0 9402  df-dec 9611  df-ndx 13084  df-slot 13085  df-base 13087  df-edgf 15855  df-vtx 15864  df-iedg 15865  df-upgren 15943  df-umgren 15944
This theorem is referenced by:  vtxdumgrfival  16148
  Copyright terms: Public domain W3C validator