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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 6918 | . . 3 ⊢ (ClWalks‘𝐺) ∈ V | |
| 3 | 1, 2 | rabex2 5306 | . 2 ⊢ 𝑊 ∈ V |
| 4 | dlwwlknondlwlknonbij.d | . . 3 ⊢ 𝐷 = {𝑤 ∈ (𝑋(ClWWalksNOn‘𝐺)𝑁) ∣ (𝑤‘(𝑁 − 2)) = 𝑋} | |
| 5 | ovex 7473 | . . 3 ⊢ (𝑋(ClWWalksNOn‘𝐺)𝑁) ∈ V | |
| 6 | 4, 5 | rabex2 5306 | . 2 ⊢ 𝐷 ∈ V |
| 7 | dlwwlknondlwlknonbij.v | . . 3 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 8 | eqid 2763 | . . 3 ⊢ (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))) = (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))) | |
| 9 | 7, 1, 4, 8 | dlwwlknondlwlknonf1o 30993 | . 2 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ (ℤ≥‘2)) → (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))):𝑊⟶1-1onto𝐷) |
| 10 | f1oen2g 9020 | . 2 ⊢ ((𝑊 ∈ V ∧ 𝐷 ∈ V ∧ (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) prefix (♯‘(1st ‘𝑐)))):𝑊⟶1-1onto𝐷) → 𝑊 ≈ 𝐷) | |
| 11 | 3, 6, 9, 10 | mp3an12i 1495 | 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 2147 {crab 3416 Vcvv 3454 class class class wbr 5106 ↦ cmpt 5189 ⟶1-1ontowf1o 6554 ‘cfv 6555 (class class class)co 7440 1st c1st 8020 2nd c2nd 8021 ≈ cen 8995 0cc0 11224 − cmin 11565 2c2 12421 ℤ≥cuz 12989 ♯chash 14498 prefix cpfx 14845 Vtxcvtx 29601 USPGraphcuspgr 29756 ClWalkscclwlks 30384 ClWWalksNOncclwwlknon 30705 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 ax-1cn 11282 ax-icn 11283 ax-addcl 11284 ax-addrcl 11285 ax-mulcl 11286 ax-mulrcl 11287 ax-mulcom 11288 ax-addass 11289 ax-mulass 11290 ax-distr 11291 ax-i2m1 11292 ax-1ne0 11293 ax-1rid 11294 ax-rnegex 11295 ax-rrecex 11296 ax-cnre 11297 ax-pre-lttri 11298 ax-pre-lttrn 11299 ax-pre-ltadd 11300 ax-pre-mulgt0 11301 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6319 df-ord 6380 df-on 6381 df-lim 6382 df-suc 6383 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-riota 7397 df-ov 7443 df-oprab 7444 df-mpo 7445 df-om 7899 df-1st 8022 df-2nd 8023 df-frecs 8324 df-wrecs 8355 df-recs 8404 df-rdg 8443 df-1o 8501 df-2o 8502 df-oadd 8505 df-er 8742 df-map 8874 df-pm 8875 df-en 8999 df-dom 9000 df-sdom 9001 df-fin 9002 df-dju 10006 df-card 10044 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-sub 11567 df-neg 11568 df-nn 12360 df-2 12429 df-n0 12631 df-xnn0 12704 df-z 12718 df-uz 12990 df-rp 13145 df-fz 13664 df-fzo 13813 df-hash 14499 df-word 14683 df-lsw 14732 df-concat 14740 df-s1 14767 df-substr 14814 df-pfx 14846 df-edg 29653 df-uhgr 29663 df-upgr 29687 df-uspgr 29758 df-wlks 30207 df-clwlks 30385 df-clwwlk 30600 df-clwwlkn 30643 df-clwwlknon 30706 |
| This theorem is used by: numclwlk1lem2 30998 |
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