ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  edgssv2en Unicode version

Theorem edgssv2en 16440
Description: An edge of a simple graph is a proper unordered pair of vertices, i.e. a subset of the set of vertices of size 2. (Contributed by AV, 10-Jan-2020.) (Revised by AV, 23-Oct-2020.)
Hypotheses
Ref Expression
edgssv2.v  |-  V  =  (Vtx `  G )
edgssv2.e  |-  E  =  (Edg `  G )
Assertion
Ref Expression
edgssv2en  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  ( C  C_  V  /\  C  ~~  2o ) )

Proof of Theorem edgssv2en
StepHypRef Expression
1 edgssv2.e . . . . 5  |-  E  =  (Edg `  G )
21eleq2i 2305 . . . 4  |-  ( C  e.  E  <->  C  e.  (Edg `  G ) )
3 edgusgren 16404 . . . 4  |-  ( ( G  e. USGraph  /\  C  e.  (Edg `  G )
)  ->  ( C  e.  ~P (Vtx `  G
)  /\  C  ~~  2o ) )
42, 3sylan2b 287 . . 3  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  ( C  e.  ~P (Vtx `  G )  /\  C  ~~  2o ) )
5 elpwi 3698 . . . 4  |-  ( C  e.  ~P (Vtx `  G )  ->  C  C_  (Vtx `  G )
)
65anim1i 340 . . 3  |-  ( ( C  e.  ~P (Vtx `  G )  /\  C  ~~  2o )  ->  ( C  C_  (Vtx `  G
)  /\  C  ~~  2o ) )
74, 6syl 14 . 2  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  ( C  C_  (Vtx `  G
)  /\  C  ~~  2o ) )
8 edgssv2.v . . . . 5  |-  V  =  (Vtx `  G )
98a1i 9 . . . 4  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  V  =  (Vtx `  G )
)
109sseq2d 3278 . . 3  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  ( C  C_  V  <->  C  C_  (Vtx `  G ) ) )
1110anbi1d 469 . 2  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  (
( C  C_  V  /\  C  ~~  2o )  <-> 
( C  C_  (Vtx `  G )  /\  C  ~~  2o ) ) )
127, 11mpbird 167 1  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  ( C  C_  V  /\  C  ~~  2o ) )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    /\ wa 104    = wceq 1402    e. wcel 2209    C_ wss 3220   ~Pcpw 3688   class class class wbr 4130   ` cfv 5377   2oc2o 6681    ~~ cen 7020  Vtxcvtx 16253  Edgcedg 16298  USGraphcusgr 16395
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684  ax-cnex 8270  ax-resscn 8271  ax-1cn 8272  ax-1re 8273  ax-icn 8274  ax-addcl 8275  ax-addrcl 8276  ax-mulcl 8277  ax-addcom 8279  ax-mulcom 8280  ax-addass 8281  ax-mulass 8282  ax-distr 8283  ax-i2m1 8284  ax-1rid 8286  ax-0id 8287  ax-rnegex 8288  ax-cnre 8290
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-if 3639  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-iota 5337  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382  df-fo 5383  df-fv 5385  df-riota 6038  df-ov 6088  df-oprab 6089  df-mpo 6090  df-1st 6374  df-2nd 6375  df-sub 8499  df-inn 9305  df-2 9363  df-3 9364  df-4 9365  df-5 9366  df-6 9367  df-7 9368  df-8 9369  df-9 9370  df-n0 9564  df-dec 9778  df-ndx 13355  df-slot 13356  df-base 13358  df-edgf 16246  df-vtx 16255  df-iedg 16256  df-edg 16299  df-usgren 16397
This theorem is used by: (None)
  Copyright terms: Public domain W3C validator