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Theorem edgssv2en 16053
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 2298 . . . 4  |-  ( C  e.  E  <->  C  e.  (Edg `  G ) )
3 edgusgren 16017 . . . 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 3661 . . . 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 3257 . . 3  |-  ( ( G  e. USGraph  /\  C  e.  E )  ->  ( C  C_  V  <->  C  C_  (Vtx `  G ) ) )
1110anbi1d 465 . 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 1397    e. wcel 2202    C_ wss 3200   ~Pcpw 3652   class class class wbr 4088   ` cfv 5326   2oc2o 6576    ~~ cen 6907  Vtxcvtx 15866  Edgcedg 15911  USGraphcusgr 16008
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-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8123  ax-resscn 8124  ax-1cn 8125  ax-1re 8126  ax-icn 8127  ax-addcl 8128  ax-addrcl 8129  ax-mulcl 8130  ax-addcom 8132  ax-mulcom 8133  ax-addass 8134  ax-mulass 8135  ax-distr 8136  ax-i2m1 8137  ax-1rid 8139  ax-0id 8140  ax-rnegex 8141  ax-cnre 8143
This theorem depends on definitions:  df-bi 117  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-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-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-fv 5334  df-riota 5971  df-ov 6021  df-oprab 6022  df-mpo 6023  df-1st 6303  df-2nd 6304  df-sub 8352  df-inn 9144  df-2 9202  df-3 9203  df-4 9204  df-5 9205  df-6 9206  df-7 9207  df-8 9208  df-9 9209  df-n0 9403  df-dec 9612  df-ndx 13087  df-slot 13088  df-base 13090  df-edgf 15859  df-vtx 15868  df-iedg 15869  df-edg 15912  df-usgren 16010
This theorem is referenced by: (None)
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