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Mirrors > Home > MPE Home > Th. List > clwwlkndivn | Structured version Visualization version GIF version |
Description: The size of the set of closed walks (defined as words) of length 𝑁 is divisible by 𝑁 if 𝑁 is a prime number. (Contributed by Alexander van der Vekens, 17-Jun-2018.) (Revised by AV, 2-May-2021.) |
Ref | Expression |
---|---|
clwwlkndivn | ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → 𝑁 ∥ (♯‘(𝑁 ClWWalksN 𝐺))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2740 | . . . . . . 7 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
2 | 1 | fusgrvtxfi 27684 | . . . . . 6 ⊢ (𝐺 ∈ FinUSGraph → (Vtx‘𝐺) ∈ Fin) |
3 | 2 | adantr 481 | . . . . 5 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → (Vtx‘𝐺) ∈ Fin) |
4 | eqid 2740 | . . . . . 6 ⊢ (𝑁 ClWWalksN 𝐺) = (𝑁 ClWWalksN 𝐺) | |
5 | eqid 2740 | . . . . . 6 ⊢ {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))} = {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))} | |
6 | 4, 5 | qerclwwlknfi 28433 | . . . . 5 ⊢ ((Vtx‘𝐺) ∈ Fin → ((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))}) ∈ Fin) |
7 | hashcl 14069 | . . . . 5 ⊢ (((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))}) ∈ Fin → (♯‘((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))})) ∈ ℕ0) | |
8 | 3, 6, 7 | 3syl 18 | . . . 4 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → (♯‘((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))})) ∈ ℕ0) |
9 | 8 | nn0zd 12423 | . . 3 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → (♯‘((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))})) ∈ ℤ) |
10 | prmz 16378 | . . . 4 ⊢ (𝑁 ∈ ℙ → 𝑁 ∈ ℤ) | |
11 | 10 | adantl 482 | . . 3 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → 𝑁 ∈ ℤ) |
12 | dvdsmul2 15986 | . . 3 ⊢ (((♯‘((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))})) ∈ ℤ ∧ 𝑁 ∈ ℤ) → 𝑁 ∥ ((♯‘((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))})) · 𝑁)) | |
13 | 9, 11, 12 | syl2anc 584 | . 2 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → 𝑁 ∥ ((♯‘((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))})) · 𝑁)) |
14 | 4, 5 | fusgrhashclwwlkn 28439 | . 2 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → (♯‘(𝑁 ClWWalksN 𝐺)) = ((♯‘((𝑁 ClWWalksN 𝐺) / {〈𝑡, 𝑢〉 ∣ (𝑡 ∈ (𝑁 ClWWalksN 𝐺) ∧ 𝑢 ∈ (𝑁 ClWWalksN 𝐺) ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))})) · 𝑁)) |
15 | 13, 14 | breqtrrd 5107 | 1 ⊢ ((𝐺 ∈ FinUSGraph ∧ 𝑁 ∈ ℙ) → 𝑁 ∥ (♯‘(𝑁 ClWWalksN 𝐺))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1542 ∈ wcel 2110 ∃wrex 3067 class class class wbr 5079 {copab 5141 ‘cfv 6432 (class class class)co 7271 / cqs 8480 Fincfn 8716 0cc0 10872 · cmul 10877 ℕ0cn0 12233 ℤcz 12319 ...cfz 13238 ♯chash 14042 cyclShift ccsh 14499 ∥ cdvds 15961 ℙcprime 16374 Vtxcvtx 27364 FinUSGraphcfusgr 27681 ClWWalksN cclwwlkn 28384 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-rep 5214 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-inf2 9377 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 ax-pre-sup 10950 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-int 4886 df-iun 4932 df-disj 5045 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-se 5546 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-isom 6441 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-1st 7824 df-2nd 7825 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-1o 8288 df-2o 8289 df-oadd 8292 df-er 8481 df-ec 8483 df-qs 8487 df-map 8600 df-pm 8601 df-en 8717 df-dom 8718 df-sdom 8719 df-fin 8720 df-sup 9179 df-inf 9180 df-oi 9247 df-dju 9660 df-card 9698 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-n0 12234 df-xnn0 12306 df-z 12320 df-uz 12582 df-rp 12730 df-ico 13084 df-fz 13239 df-fzo 13382 df-fl 13510 df-mod 13588 df-seq 13720 df-exp 13781 df-hash 14043 df-word 14216 df-lsw 14264 df-concat 14272 df-substr 14352 df-pfx 14382 df-reps 14480 df-csh 14500 df-cj 14808 df-re 14809 df-im 14810 df-sqrt 14944 df-abs 14945 df-clim 15195 df-sum 15396 df-dvds 15962 df-gcd 16200 df-prm 16375 df-phi 16465 df-edg 27416 df-umgr 27451 df-usgr 27519 df-fusgr 27682 df-clwwlk 28342 df-clwwlkn 28385 |
This theorem is referenced by: clwlksndivn 28446 numclwwlk8 28752 |
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