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| Mirrors > Home > MPE Home > Th. List > clwlksndivn | Structured version Visualization version GIF version | ||
| Description: The size of the set of closed walks of prime length 𝑁 is divisible by 𝑁. This corresponds to statement 9 in [Huneke] p. 2: "It follows that, if p is a prime number, then the number of closed walks of length p is divisible by p". (Contributed by Alexander van der Vekens, 6-Jul-2018.) (Revised by AV, 4-May-2021.) |
| Ref | Expression |
|---|---|
| clwlksndivn | ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → 𝑁 ∥ (♯‘{𝑐 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st ‘𝑐)) = 𝑁})) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | clwwlkndivn 30152 | . 2 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → 𝑁 ∥ (♯‘(𝑁 ClWWalksN 𝐺))) | |
| 2 | fusgrusgr 29393 | . . . 4 ⊢ (𝐺 ∈ FinUSGraph → 𝐺 ∈ USGraph) | |
| 3 | usgruspgr 29251 | . . . 4 ⊢ (𝐺 ∈ USGraph → 𝐺 ∈ USPGraph) | |
| 4 | 2, 3 | syl 17 | . . 3 ⊢ (𝐺 ∈ FinUSGraph → 𝐺 ∈ USPGraph) |
| 5 | prmnn 16645 | . . 3 ⊢ (𝑁 ∈ ℙ → 𝑁 ∈ ℕ) | |
| 6 | clwlkssizeeq 30157 | . . 3 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑁 ∈ ℕ) → (♯‘(𝑁 ClWWalksN 𝐺)) = (♯‘{𝑐 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st ‘𝑐)) = 𝑁})) | |
| 7 | 4, 5, 6 | syl2an 597 | . 2 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → (♯‘(𝑁 ClWWalksN 𝐺)) = (♯‘{𝑐 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st ‘𝑐)) = 𝑁})) |
| 8 | 1, 7 | breqtrd 5112 | 1 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → 𝑁 ∥ (♯‘{𝑐 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st ‘𝑐)) = 𝑁})) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 {crab 3390 class class class wbr 5086 ‘cfv 6500 (class class class)co 7369 1st c1st 7942 ℕcn 12176 ♯chash 14294 ∥ cdvds 16223 ℙcprime 16642 USPGraphcuspgr 29219 USGraphcusgr 29220 FinUSGraphcfusgr 29387 ClWalkscclwlks 29840 ClWWalksN cclwwlkn 30096 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5308 ax-pr 5376 ax-un 7691 ax-inf2 9564 ax-cnex 11096 ax-resscn 11097 ax-1cn 11098 ax-icn 11099 ax-addcl 11100 ax-addrcl 11101 ax-mulcl 11102 ax-mulrcl 11103 ax-mulcom 11104 ax-addass 11105 ax-mulass 11106 ax-distr 11107 ax-i2m1 11108 ax-1ne0 11109 ax-1rid 11110 ax-rnegex 11111 ax-rrecex 11112 ax-cnre 11113 ax-pre-lttri 11114 ax-pre-lttrn 11115 ax-pre-ltadd 11116 ax-pre-mulgt0 11117 ax-pre-sup 11118 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-ifp 1064 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-disj 5054 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-se 5586 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-isom 6509 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7820 df-1st 7944 df-2nd 7945 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-2o 8408 df-oadd 8411 df-er 8645 df-ec 8647 df-qs 8651 df-map 8777 df-pm 8778 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-sup 9357 df-inf 9358 df-oi 9427 df-dju 9827 df-card 9865 df-pnf 11183 df-mnf 11184 df-xr 11185 df-ltxr 11186 df-le 11187 df-sub 11381 df-neg 11382 df-div 11810 df-nn 12177 df-2 12246 df-3 12247 df-n0 12440 df-xnn0 12513 df-z 12527 df-uz 12791 df-rp 12945 df-ico 13306 df-fz 13464 df-fzo 13611 df-fl 13753 df-mod 13831 df-seq 13966 df-exp 14026 df-hash 14295 df-word 14478 df-lsw 14527 df-concat 14535 df-s1 14561 df-substr 14606 df-pfx 14636 df-reps 14733 df-csh 14753 df-cj 15063 df-re 15064 df-im 15065 df-sqrt 15199 df-abs 15200 df-clim 15452 df-sum 15651 df-dvds 16224 df-gcd 16466 df-prm 16643 df-phi 16738 df-edg 29119 df-uhgr 29129 df-upgr 29153 df-umgr 29154 df-uspgr 29221 df-usgr 29222 df-fusgr 29388 df-wlks 29670 df-clwlks 29841 df-clwwlk 30054 df-clwwlkn 30097 |
| This theorem is referenced by: (None) |
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