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| Mirrors > Home > MPE Home > Th. List > dlwwlknondlwlknonen | Structured version Visualization version GIF version | ||
| Description: The sets of the two representations of double loops of a fixed length on a fixed vertex are equinumerous. (Contributed by AV, 30-May-2022.) (Proof shortened by AV, 3-Nov-2022.) |
| Ref | Expression |
|---|---|
| dlwwlknondlwlknonbij.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| dlwwlknondlwlknonbij.w | ⊢ 𝑊 = {𝑤 ∈ (ClWalks‘𝐺) ∣ ((♯‘(1st ‘𝑤)) = 𝑁 ∧ ((2nd ‘𝑤)‘0) = 𝑋 ∧ ((2nd ‘𝑤)‘(𝑁 − 2)) = 𝑋)} |
| dlwwlknondlwlknonbij.d | ⊢ 𝐷 = {𝑤 ∈ (𝑋(ClWWalksNOn‘𝐺)𝑁) ∣ (𝑤‘(𝑁 − 2)) = 𝑋} |
| Ref | Expression |
|---|---|
| dlwwlknondlwlknonen | ⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ (ℤ≥‘2)) → 𝑊 ≈ 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dlwwlknondlwlknonbij.w | . . 3 ⊢ 𝑊 = {𝑤 ∈ (ClWalks‘𝐺) ∣ ((♯‘(1st ‘𝑤)) = 𝑁 ∧ ((2nd ‘𝑤)‘0) = 𝑋 ∧ ((2nd ‘𝑤)‘(𝑁 − 2)) = 𝑋)} | |
| 2 | fvex 6871 | . . 3 ⊢ (ClWalks‘𝐺) ∈ V | |
| 3 | 1, 2 | rabex2 5296 | . 2 ⊢ 𝑊 ∈ V |
| 4 | dlwwlknondlwlknonbij.d | . . 3 ⊢ 𝐷 = {𝑤 ∈ (𝑋(ClWWalksNOn‘𝐺)𝑁) ∣ (𝑤‘(𝑁 − 2)) = 𝑋} | |
| 5 | ovex 7420 | . . 3 ⊢ (𝑋(ClWWalksNOn‘𝐺)𝑁) ∈ V | |
| 6 | 4, 5 | rabex2 5296 | . 2 ⊢ 𝐷 ∈ V |
| 7 | dlwwlknondlwlknonbij.v | . . 3 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 8 | eqid 2729 | . . 3 ⊢ (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))) = (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))) | |
| 9 | 7, 1, 4, 8 | dlwwlknondlwlknonf1o 30294 | . 2 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ (ℤ≥‘2)) → (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))):𝑊–1-1-onto→𝐷) |
| 10 | f1oen2g 8940 | . 2 ⊢ ((𝑊 ∈ V ∧ 𝐷 ∈ V ∧ (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))):𝑊–1-1-onto→𝐷) → 𝑊 ≈ 𝐷) | |
| 11 | 3, 6, 9, 10 | mp3an12i 1467 | 1 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ (ℤ≥‘2)) → 𝑊 ≈ 𝐷) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 {crab 3405 Vcvv 3447 class class class wbr 5107 ↦ cmpt 5188 –1-1-onto→wf1o 6510 ‘cfv 6511 (class class class)co 7387 1st c1st 7966 2nd c2nd 7967 ≈ cen 8915 0cc0 11068 − cmin 11405 2c2 12241 ℤ≥cuz 12793 ♯chash 14295 prefix cpfx 14635 Vtxcvtx 28923 USPGraphcuspgr 29075 ClWalkscclwlks 29700 ClWWalksNOncclwwlknon 30016 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-ifp 1063 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-int 4911 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-1st 7968 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-1o 8434 df-2o 8435 df-oadd 8438 df-er 8671 df-map 8801 df-pm 8802 df-en 8919 df-dom 8920 df-sdom 8921 df-fin 8922 df-dju 9854 df-card 9892 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-2 12249 df-n0 12443 df-xnn0 12516 df-z 12530 df-uz 12794 df-rp 12952 df-fz 13469 df-fzo 13616 df-hash 14296 df-word 14479 df-lsw 14528 df-concat 14536 df-s1 14561 df-substr 14606 df-pfx 14636 df-edg 28975 df-uhgr 28985 df-upgr 29009 df-uspgr 29077 df-wlks 29527 df-clwlks 29701 df-clwwlk 29911 df-clwwlkn 29954 df-clwwlknon 30017 |
| This theorem is referenced by: numclwlk1lem2 30299 |
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