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Mirrors > Home > MPE Home > Th. List > 3trlond | Structured version Visualization version GIF version |
Description: A trail of length 3 from one vertex to another, different vertex via a third vertex. (Contributed by AV, 8-Feb-2021.) (Revised by AV, 24-Mar-2021.) |
Ref | Expression |
---|---|
3wlkd.p | β’ π = β¨βπ΄π΅πΆπ·ββ© |
3wlkd.f | β’ πΉ = β¨βπ½πΎπΏββ© |
3wlkd.s | β’ (π β ((π΄ β π β§ π΅ β π) β§ (πΆ β π β§ π· β π))) |
3wlkd.n | β’ (π β ((π΄ β π΅ β§ π΄ β πΆ) β§ (π΅ β πΆ β§ π΅ β π·) β§ πΆ β π·)) |
3wlkd.e | β’ (π β ({π΄, π΅} β (πΌβπ½) β§ {π΅, πΆ} β (πΌβπΎ) β§ {πΆ, π·} β (πΌβπΏ))) |
3wlkd.v | β’ π = (VtxβπΊ) |
3wlkd.i | β’ πΌ = (iEdgβπΊ) |
3trld.n | β’ (π β (π½ β πΎ β§ π½ β πΏ β§ πΎ β πΏ)) |
Ref | Expression |
---|---|
3trlond | β’ (π β πΉ(π΄(TrailsOnβπΊ)π·)π) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3wlkd.p | . . 3 β’ π = β¨βπ΄π΅πΆπ·ββ© | |
2 | 3wlkd.f | . . 3 β’ πΉ = β¨βπ½πΎπΏββ© | |
3 | 3wlkd.s | . . 3 β’ (π β ((π΄ β π β§ π΅ β π) β§ (πΆ β π β§ π· β π))) | |
4 | 3wlkd.n | . . 3 β’ (π β ((π΄ β π΅ β§ π΄ β πΆ) β§ (π΅ β πΆ β§ π΅ β π·) β§ πΆ β π·)) | |
5 | 3wlkd.e | . . 3 β’ (π β ({π΄, π΅} β (πΌβπ½) β§ {π΅, πΆ} β (πΌβπΎ) β§ {πΆ, π·} β (πΌβπΏ))) | |
6 | 3wlkd.v | . . 3 β’ π = (VtxβπΊ) | |
7 | 3wlkd.i | . . 3 β’ πΌ = (iEdgβπΊ) | |
8 | 1, 2, 3, 4, 5, 6, 7 | 3wlkond 30001 | . 2 β’ (π β πΉ(π΄(WalksOnβπΊ)π·)π) |
9 | 3trld.n | . . 3 β’ (π β (π½ β πΎ β§ π½ β πΏ β§ πΎ β πΏ)) | |
10 | 1, 2, 3, 4, 5, 6, 7, 9 | 3trld 30002 | . 2 β’ (π β πΉ(TrailsβπΊ)π) |
11 | 3 | simplld 766 | . . 3 β’ (π β π΄ β π) |
12 | 3 | simprrd 772 | . . 3 β’ (π β π· β π) |
13 | s3cli 14872 | . . . . . 6 β’ β¨βπ½πΎπΏββ© β Word V | |
14 | 2, 13 | eqeltri 2825 | . . . . 5 β’ πΉ β Word V |
15 | s4cli 14873 | . . . . . 6 β’ β¨βπ΄π΅πΆπ·ββ© β Word V | |
16 | 1, 15 | eqeltri 2825 | . . . . 5 β’ π β Word V |
17 | 14, 16 | pm3.2i 469 | . . . 4 β’ (πΉ β Word V β§ π β Word V) |
18 | 17 | a1i 11 | . . 3 β’ (π β (πΉ β Word V β§ π β Word V)) |
19 | 6 | istrlson 29541 | . . 3 β’ (((π΄ β π β§ π· β π) β§ (πΉ β Word V β§ π β Word V)) β (πΉ(π΄(TrailsOnβπΊ)π·)π β (πΉ(π΄(WalksOnβπΊ)π·)π β§ πΉ(TrailsβπΊ)π))) |
20 | 11, 12, 18, 19 | syl21anc 836 | . 2 β’ (π β (πΉ(π΄(TrailsOnβπΊ)π·)π β (πΉ(π΄(WalksOnβπΊ)π·)π β§ πΉ(TrailsβπΊ)π))) |
21 | 8, 10, 20 | mpbir2and 711 | 1 β’ (π β πΉ(π΄(TrailsOnβπΊ)π·)π) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β wb 205 β§ wa 394 β§ w3a 1084 = wceq 1533 β wcel 2098 β wne 2937 Vcvv 3473 β wss 3949 {cpr 4634 class class class wbr 5152 βcfv 6553 (class class class)co 7426 Word cword 14504 β¨βcs3 14833 β¨βcs4 14834 Vtxcvtx 28829 iEdgciedg 28830 WalksOncwlkson 29431 Trailsctrls 29524 TrailsOnctrlson 29525 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2699 ax-rep 5289 ax-sep 5303 ax-nul 5310 ax-pow 5369 ax-pr 5433 ax-un 7746 ax-cnex 11202 ax-resscn 11203 ax-1cn 11204 ax-icn 11205 ax-addcl 11206 ax-addrcl 11207 ax-mulcl 11208 ax-mulrcl 11209 ax-mulcom 11210 ax-addass 11211 ax-mulass 11212 ax-distr 11213 ax-i2m1 11214 ax-1ne0 11215 ax-1rid 11216 ax-rnegex 11217 ax-rrecex 11218 ax-cnre 11219 ax-pre-lttri 11220 ax-pre-lttrn 11221 ax-pre-ltadd 11222 ax-pre-mulgt0 11223 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-ifp 1061 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-reu 3375 df-rab 3431 df-v 3475 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4327 df-if 4533 df-pw 4608 df-sn 4633 df-pr 4635 df-tp 4637 df-op 4639 df-uni 4913 df-int 4954 df-iun 5002 df-br 5153 df-opab 5215 df-mpt 5236 df-tr 5270 df-id 5580 df-eprel 5586 df-po 5594 df-so 5595 df-fr 5637 df-we 5639 df-xp 5688 df-rel 5689 df-cnv 5690 df-co 5691 df-dm 5692 df-rn 5693 df-res 5694 df-ima 5695 df-pred 6310 df-ord 6377 df-on 6378 df-lim 6379 df-suc 6380 df-iota 6505 df-fun 6555 df-fn 6556 df-f 6557 df-f1 6558 df-fo 6559 df-f1o 6560 df-fv 6561 df-riota 7382 df-ov 7429 df-oprab 7430 df-mpo 7431 df-om 7877 df-1st 7999 df-2nd 8000 df-frecs 8293 df-wrecs 8324 df-recs 8398 df-rdg 8437 df-1o 8493 df-er 8731 df-map 8853 df-en 8971 df-dom 8972 df-sdom 8973 df-fin 8974 df-card 9970 df-pnf 11288 df-mnf 11289 df-xr 11290 df-ltxr 11291 df-le 11292 df-sub 11484 df-neg 11485 df-nn 12251 df-2 12313 df-3 12314 df-4 12315 df-n0 12511 df-z 12597 df-uz 12861 df-fz 13525 df-fzo 13668 df-hash 14330 df-word 14505 df-lsw 14553 df-concat 14561 df-s1 14586 df-s2 14839 df-s3 14840 df-s4 14841 df-wlks 29433 df-wlkson 29434 df-trls 29526 df-trlson 29527 |
This theorem is referenced by: 3pthond 30005 3spthond 30007 |
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