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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 6899 | . . 3 ⊢ (ClWalks‘𝐺) ∈ V | |
| 3 | 1, 2 | rabex2 5313 | . 2 ⊢ 𝑊 ∈ V |
| 4 | dlwwlknondlwlknonbij.d | . . 3 ⊢ 𝐷 = {𝑤 ∈ (𝑋(ClWWalksNOn‘𝐺)𝑁) ∣ (𝑤‘(𝑁 − 2)) = 𝑋} | |
| 5 | ovex 7453 | . . 3 ⊢ (𝑋(ClWWalksNOn‘𝐺)𝑁) ∈ V | |
| 6 | 4, 5 | rabex2 5313 | . 2 ⊢ 𝐷 ∈ V |
| 7 | dlwwlknondlwlknonbij.v | . . 3 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 8 | eqid 2765 | . . 3 ⊢ (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))) = (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))) | |
| 9 | 7, 1, 4, 8 | dlwwlknondlwlknonf1o 30792 | . 2 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ (ℤ≥‘2)) → (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))):𝑊–1-1-onto→𝐷) |
| 10 | f1oen2g 8972 | . 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 1494 | 1 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ (ℤ≥‘2)) → 𝑊 ≈ 𝐷) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 {crab 3418 Vcvv 3457 class class class wbr 5111 ↦ cmpt 5194 –1-1-onto→wf1o 6540 ‘cfv 6541 (class class class)co 7420 1st c1st 7991 2nd c2nd 7992 ≈ cen 8947 0cc0 11120 − cmin 11461 2c2 12315 ℤ≥cuz 12883 ♯chash 14389 prefix cpfx 14735 Vtxcvtx 29406 USPGraphcuspgr 29561 ClWalkscclwlks 30189 ClWWalksNOncclwwlknon 30510 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7743 ax-cnex 11176 ax-resscn 11177 ax-1cn 11178 ax-icn 11179 ax-addcl 11180 ax-addrcl 11181 ax-mulcl 11182 ax-mulrcl 11183 ax-mulcom 11184 ax-addass 11185 ax-mulass 11186 ax-distr 11187 ax-i2m1 11188 ax-1ne0 11189 ax-1rid 11190 ax-rnegex 11191 ax-rrecex 11192 ax-cnre 11193 ax-pre-lttri 11194 ax-pre-lttrn 11195 ax-pre-ltadd 11196 ax-pre-mulgt0 11197 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-ifp 1079 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-int 4915 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7870 df-1st 7993 df-2nd 7994 df-frecs 8285 df-wrecs 8316 df-recs 8365 df-rdg 8404 df-1o 8460 df-2o 8461 df-oadd 8464 df-er 8701 df-map 8833 df-pm 8834 df-en 8951 df-dom 8952 df-sdom 8953 df-fin 8954 df-dju 9904 df-card 9942 df-pnf 11265 df-mnf 11266 df-xr 11267 df-ltxr 11268 df-le 11269 df-sub 11463 df-neg 11464 df-nn 12254 df-2 12323 df-n0 12525 df-xnn0 12598 df-z 12612 df-uz 12884 df-rp 13038 df-fz 13557 df-fzo 13705 df-hash 14390 df-word 14574 df-lsw 14623 df-concat 14631 df-s1 14658 df-substr 14704 df-pfx 14736 df-edg 29458 df-uhgr 29468 df-upgr 29492 df-uspgr 29563 df-wlks 30012 df-clwlks 30190 df-clwwlk 30405 df-clwwlkn 30448 df-clwwlknon 30511 |
| This theorem is used by: numclwlk1lem2 30797 |
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