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Theorem edgssv2en 16423
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 16387 . . . 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 3697 . . . 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
Syntax hints:    -> wi 4    /\ wa 104    = wceq 1402    e. wcel 2209    C_ wss 3220   ~Pcpw 3688   class class class wbr 4128   ` cfv 5375   2oc2o 6675    ~~ cen 7014  Vtxcvtx 16236  Edgcedg 16281  USGraphcusgr 16378
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 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 4247  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-setind 4682  ax-cnex 8264  ax-resscn 8265  ax-1cn 8266  ax-1re 8267  ax-icn 8268  ax-addcl 8269  ax-addrcl 8270  ax-mulcl 8271  ax-addcom 8273  ax-mulcom 8274  ax-addass 8275  ax-mulass 8276  ax-distr 8277  ax-i2m1 8278  ax-1rid 8280  ax-0id 8281  ax-rnegex 8282  ax-cnre 8284
This theorem 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 3714  df-pr 3715  df-op 3717  df-uni 3934  df-int 3969  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-f1 5380  df-fo 5381  df-fv 5383  df-riota 6032  df-ov 6082  df-oprab 6083  df-mpo 6084  df-1st 6368  df-2nd 6369  df-sub 8493  df-inn 9288  df-2 9346  df-3 9347  df-4 9348  df-5 9349  df-6 9350  df-7 9351  df-8 9352  df-9 9353  df-n0 9547  df-dec 9761  df-ndx 13338  df-slot 13339  df-base 13341  df-edgf 16229  df-vtx 16238  df-iedg 16239  df-edg 16282  df-usgren 16380
This theorem is referenced by: (None)
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