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Theorem loopclwwlkn1b 16414
Description: The singleton word consisting of a vertex  V represents a closed walk of length 1 iff there is a loop at vertex  V. (Contributed by AV, 11-Feb-2022.)
Assertion
Ref Expression
loopclwwlkn1b  |-  ( V  e.  (Vtx `  G
)  ->  ( { V }  e.  (Edg `  G )  <->  <" V ">  e.  ( 1 ClWWalksN  G ) ) )

Proof of Theorem loopclwwlkn1b
StepHypRef Expression
1 clwwlkn1 16413 . 2  |-  ( <" V ">  e.  ( 1 ClWWalksN  G )  <-> 
( ( `  <" V "> )  =  1  /\  <" V ">  e. Word  (Vtx
`  G )  /\  { ( <" V "> `  0 ) }  e.  (Edg `  G
) ) )
2 s1fv 11314 . . . . . . . 8  |-  ( V  e.  (Vtx `  G
)  ->  ( <" V "> `  0
)  =  V )
32sneqd 3702 . . . . . . 7  |-  ( V  e.  (Vtx `  G
)  ->  { ( <" V "> `  0 ) }  =  { V } )
43eleq1d 2301 . . . . . 6  |-  ( V  e.  (Vtx `  G
)  ->  ( {
( <" V "> `  0 ) }  e.  (Edg `  G
)  <->  { V }  e.  (Edg `  G ) ) )
54biimpcd 159 . . . . 5  |-  ( { ( <" V "> `  0 ) }  e.  (Edg `  G
)  ->  ( V  e.  (Vtx `  G )  ->  { V }  e.  (Edg `  G ) ) )
653ad2ant3 1047 . . . 4  |-  ( ( ( `  <" V "> )  =  1  /\  <" V ">  e. Word  (Vtx `  G
)  /\  { ( <" V "> `  0 ) }  e.  (Edg `  G ) )  ->  ( V  e.  (Vtx `  G )  ->  { V }  e.  (Edg `  G ) ) )
76com12 30 . . 3  |-  ( V  e.  (Vtx `  G
)  ->  ( (
( `  <" V "> )  =  1  /\  <" V ">  e. Word  (Vtx `  G
)  /\  { ( <" V "> `  0 ) }  e.  (Edg `  G ) )  ->  { V }  e.  (Edg `  G )
) )
8 s1leng 11312 . . . . . 6  |-  ( V  e.  (Vtx `  G
)  ->  ( `  <" V "> )  =  1 )
98adantr 276 . . . . 5  |-  ( ( V  e.  (Vtx `  G )  /\  { V }  e.  (Edg `  G ) )  -> 
( `  <" V "> )  =  1
)
10 s1cl 11309 . . . . . 6  |-  ( V  e.  (Vtx `  G
)  ->  <" V ">  e. Word  (Vtx `  G
) )
1110adantr 276 . . . . 5  |-  ( ( V  e.  (Vtx `  G )  /\  { V }  e.  (Edg `  G ) )  ->  <" V ">  e. Word  (Vtx `  G )
)
122eqcomd 2238 . . . . . . . 8  |-  ( V  e.  (Vtx `  G
)  ->  V  =  ( <" V "> `  0 ) )
1312sneqd 3702 . . . . . . 7  |-  ( V  e.  (Vtx `  G
)  ->  { V }  =  { ( <" V "> `  0 ) } )
1413eleq1d 2301 . . . . . 6  |-  ( V  e.  (Vtx `  G
)  ->  ( { V }  e.  (Edg `  G )  <->  { ( <" V "> `  0 ) }  e.  (Edg `  G ) ) )
1514biimpa 296 . . . . 5  |-  ( ( V  e.  (Vtx `  G )  /\  { V }  e.  (Edg `  G ) )  ->  { ( <" V "> `  0 ) }  e.  (Edg `  G
) )
169, 11, 153jca 1204 . . . 4  |-  ( ( V  e.  (Vtx `  G )  /\  { V }  e.  (Edg `  G ) )  -> 
( ( `  <" V "> )  =  1  /\  <" V ">  e. Word  (Vtx
`  G )  /\  { ( <" V "> `  0 ) }  e.  (Edg `  G
) ) )
1716ex 115 . . 3  |-  ( V  e.  (Vtx `  G
)  ->  ( { V }  e.  (Edg `  G )  ->  (
( `  <" V "> )  =  1  /\  <" V ">  e. Word  (Vtx `  G
)  /\  { ( <" V "> `  0 ) }  e.  (Edg `  G ) ) ) )
187, 17impbid 129 . 2  |-  ( V  e.  (Vtx `  G
)  ->  ( (
( `  <" V "> )  =  1  /\  <" V ">  e. Word  (Vtx `  G
)  /\  { ( <" V "> `  0 ) }  e.  (Edg `  G ) )  <->  { V }  e.  (Edg
`  G ) ) )
191, 18bitr2id 193 1  |-  ( V  e.  (Vtx `  G
)  ->  ( { V }  e.  (Edg `  G )  <->  <" V ">  e.  ( 1 ClWWalksN  G ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    /\ w3a 1005    = wceq 1398    e. wcel 2203   {csn 3689   ` cfv 5352  (class class class)co 6050   0cc0 8127   1c1 8128  ♯chash 11138  Word cword 11224   <"cs1 11303  Vtxcvtx 16007  Edgcedg 16052   ClWWalksN cclwwlkn 16398
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 2205  ax-14 2206  ax-ext 2214  ax-coll 4225  ax-sep 4228  ax-nul 4236  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-iinf 4710  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-mulrcl 8226  ax-addcom 8227  ax-mulcom 8228  ax-addass 8229  ax-mulass 8230  ax-distr 8231  ax-i2m1 8232  ax-0lt1 8233  ax-1rid 8234  ax-0id 8235  ax-rnegex 8236  ax-precex 8237  ax-cnre 8238  ax-pre-ltirr 8239  ax-pre-ltwlin 8240  ax-pre-lttrn 8241  ax-pre-apti 8242  ax-pre-ltadd 8243  ax-pre-mulgt0 8244
This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-reu 2527  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-if 3621  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-iun 3993  df-br 4110  df-opab 4172  df-mpt 4173  df-tr 4209  df-id 4414  df-iord 4487  df-on 4489  df-ilim 4490  df-suc 4492  df-iom 4713  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-f1 5357  df-fo 5358  df-f1o 5359  df-fv 5360  df-riota 6003  df-ov 6053  df-oprab 6054  df-mpo 6055  df-1st 6334  df-2nd 6335  df-recs 6536  df-frec 6622  df-1o 6647  df-er 6767  df-map 6884  df-en 6976  df-dom 6977  df-fin 6978  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-sub 8446  df-neg 8447  df-reap 8849  df-ap 8856  df-inn 9238  df-n0 9497  df-z 9578  df-uz 9854  df-fz 10343  df-fzo 10477  df-ihash 11139  df-word 11225  df-lsw 11270  df-s1 11304  df-ndx 13215  df-slot 13216  df-base 13218  df-vtx 16009  df-clwwlk 16387  df-clwwlkn 16399
This theorem is referenced by: (None)
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