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| Mirrors > Home > MPE Home > Th. List > Mathboxes > stgrclnbgr0 | Structured version Visualization version GIF version | ||
| Description: All vertices of a star graph SN are in the closed neighborhood of the center. (Contributed by AV, 12-Sep-2025.) |
| Ref | Expression |
|---|---|
| stgrvtx0.g | ⊢ 𝐺 = (StarGr‘𝑁) |
| stgrvtx0.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| Ref | Expression |
|---|---|
| stgrclnbgr0 | ⊢ (𝑁 ∈ ℕ0 → (𝐺 ClNeighbVtx 0) = 𝑉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | stgrvtx0.g | . . . 4 ⊢ 𝐺 = (StarGr‘𝑁) | |
| 2 | stgrvtx0.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 3 | 1, 2 | stgrvtx0 48467 | . . 3 ⊢ (𝑁 ∈ ℕ0 → 0 ∈ 𝑉) |
| 4 | 2 | dfclnbgr4 48329 | . . 3 ⊢ (0 ∈ 𝑉 → (𝐺 ClNeighbVtx 0) = ({0} ∪ (𝐺 NeighbVtx 0))) |
| 5 | 3, 4 | syl 17 | . 2 ⊢ (𝑁 ∈ ℕ0 → (𝐺 ClNeighbVtx 0) = ({0} ∪ (𝐺 NeighbVtx 0))) |
| 6 | 1, 2 | stgrnbgr0 48469 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (𝐺 NeighbVtx 0) = (𝑉 ∖ {0})) |
| 7 | 6 | uneq2d 4101 | . 2 ⊢ (𝑁 ∈ ℕ0 → ({0} ∪ (𝐺 NeighbVtx 0)) = ({0} ∪ (𝑉 ∖ {0}))) |
| 8 | 3 | snssd 4721 | . . 3 ⊢ (𝑁 ∈ ℕ0 → {0} ⊆ 𝑉) |
| 9 | undif 4413 | . . 3 ⊢ ({0} ⊆ 𝑉 ↔ ({0} ∪ (𝑉 ∖ {0})) = 𝑉) | |
| 10 | 8, 9 | sylib 220 | . 2 ⊢ (𝑁 ∈ ℕ0 → ({0} ∪ (𝑉 ∖ {0})) = 𝑉) |
| 11 | 5, 7, 10 | 3eqtrd 2780 | 1 ⊢ (𝑁 ∈ ℕ0 → (𝐺 ClNeighbVtx 0) = 𝑉) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ∈ wcel 2121 ∖ cdif 3882 ∪ cun 3883 ⊆ wss 3885 {csn 4558 ‘cfv 6489 (class class class)co 7360 0cc0 11033 ℕ0cn0 12432 Vtxcvtx 29087 NeighbVtx cnbgr 29423 ClNeighbVtx cclnbgr 48323 StarGrcstgr 48456 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-int 4881 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-oadd 8403 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-dju 9820 df-card 9858 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-5 12242 df-6 12243 df-7 12244 df-8 12245 df-9 12246 df-n0 12433 df-xnn0 12506 df-z 12520 df-dec 12640 df-uz 12784 df-fz 13457 df-hash 14288 df-struct 17112 df-slot 17147 df-ndx 17159 df-base 17175 df-edgf 29080 df-vtx 29089 df-iedg 29090 df-edg 29139 df-nbgr 29424 df-clnbgr 48324 df-stgr 48457 |
| This theorem is referenced by: (None) |
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