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| Mirrors > Home > MPE Home > Th. List > rusgrpropadjvtx | Structured version Visualization version GIF version | ||
| Description: The properties of a k-regular simple graph expressed with adjacent vertices. (Contributed by Alexander van der Vekens, 26-Jul-2018.) (Revised by AV, 27-Dec-2020.) |
| Ref | Expression |
|---|---|
| rusgrpropnb.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| Ref | Expression |
|---|---|
| rusgrpropadjvtx | ⊢ (𝐺 RegUSGraph 𝐾 → (𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rusgrpropnb.v | . . 3 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 2 | 1 | rusgrpropnb 29652 | . 2 ⊢ (𝐺 RegUSGraph 𝐾 → (𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾)) |
| 3 | simp1 1137 | . . 3 ⊢ ((𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → 𝐺 ∈ USGraph) | |
| 4 | simp2 1138 | . . 3 ⊢ ((𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → 𝐾 ∈ ℕ0*) | |
| 5 | eqid 2736 | . . . . . . . . . . . 12 ⊢ (Edg‘𝐺) = (Edg‘𝐺) | |
| 6 | 1, 5 | nbusgrvtx 29417 | . . . . . . . . . . 11 ⊢ ((𝐺 ∈ USGraph ∧ 𝑣 ∈ 𝑉) → (𝐺 NeighbVtx 𝑣) = {𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) |
| 7 | 6 | fveq2d 6844 | . . . . . . . . . 10 ⊢ ((𝐺 ∈ USGraph ∧ 𝑣 ∈ 𝑉) → (♯‘(𝐺 NeighbVtx 𝑣)) = (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)})) |
| 8 | 7 | eqcomd 2742 | . . . . . . . . 9 ⊢ ((𝐺 ∈ USGraph ∧ 𝑣 ∈ 𝑉) → (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = (♯‘(𝐺 NeighbVtx 𝑣))) |
| 9 | 8 | adantr 480 | . . . . . . . 8 ⊢ (((𝐺 ∈ USGraph ∧ 𝑣 ∈ 𝑉) ∧ (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = (♯‘(𝐺 NeighbVtx 𝑣))) |
| 10 | simpr 484 | . . . . . . . 8 ⊢ (((𝐺 ∈ USGraph ∧ 𝑣 ∈ 𝑉) ∧ (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) | |
| 11 | 9, 10 | eqtrd 2771 | . . . . . . 7 ⊢ (((𝐺 ∈ USGraph ∧ 𝑣 ∈ 𝑉) ∧ (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾) |
| 12 | 11 | ex 412 | . . . . . 6 ⊢ ((𝐺 ∈ USGraph ∧ 𝑣 ∈ 𝑉) → ((♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾 → (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾)) |
| 13 | 12 | ralimdva 3149 | . . . . 5 ⊢ (𝐺 ∈ USGraph → (∀𝑣 ∈ 𝑉 (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾 → ∀𝑣 ∈ 𝑉 (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾)) |
| 14 | 13 | imp 406 | . . . 4 ⊢ ((𝐺 ∈ USGraph ∧ ∀𝑣 ∈ 𝑉 (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → ∀𝑣 ∈ 𝑉 (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾) |
| 15 | 14 | 3adant2 1132 | . . 3 ⊢ ((𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → ∀𝑣 ∈ 𝑉 (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾) |
| 16 | 3, 4, 15 | 3jca 1129 | . 2 ⊢ ((𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘(𝐺 NeighbVtx 𝑣)) = 𝐾) → (𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾)) |
| 17 | 2, 16 | syl 17 | 1 ⊢ (𝐺 RegUSGraph 𝐾 → (𝐺 ∈ USGraph ∧ 𝐾 ∈ ℕ0* ∧ ∀𝑣 ∈ 𝑉 (♯‘{𝑘 ∈ 𝑉 ∣ {𝑣, 𝑘} ∈ (Edg‘𝐺)}) = 𝐾)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ∀wral 3051 {crab 3389 {cpr 4569 class class class wbr 5085 ‘cfv 6498 (class class class)co 7367 ℕ0*cxnn0 12510 ♯chash 14292 Vtxcvtx 29065 Edgcedg 29116 USGraphcusgr 29218 NeighbVtx cnbgr 29401 RegUSGraph crusgr 29625 |
| 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 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-int 4890 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-1o 8405 df-2o 8406 df-oadd 8409 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-fin 8897 df-dju 9825 df-card 9863 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-2 12244 df-n0 12438 df-xnn0 12511 df-z 12525 df-uz 12789 df-xadd 13064 df-fz 13462 df-hash 14293 df-edg 29117 df-uhgr 29127 df-ushgr 29128 df-upgr 29151 df-umgr 29152 df-uspgr 29219 df-usgr 29220 df-nbgr 29402 df-vtxdg 29535 df-rgr 29626 df-rusgr 29627 |
| This theorem is referenced by: rusgrnumwrdl2 29655 rusgrnumwwlks 30045 |
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