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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 48943 | . . 3 ⊢ (𝑁 ∈ ℕ0 → 0 ∈ 𝑉) |
| 4 | 2 | dfclnbgr4 48805 | . . 3 ⊢ (0 ∈ 𝑉 → (𝐺 ClNeighbVtx 0) = ({0} ∪ (𝐺 NeighbVtx 0))) |
| 5 | 3, 4 | syl 18 | . 2 ⊢ (𝑁 ∈ ℕ0 → (𝐺 ClNeighbVtx 0) = ({0} ∪ (𝐺 NeighbVtx 0))) |
| 6 | 1, 2 | stgrnbgr0 48945 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (𝐺 NeighbVtx 0) = (𝑉 ∖ {0})) |
| 7 | 6 | uneq2d 4115 | . 2 ⊢ (𝑁 ∈ ℕ0 → ({0} ∪ (𝐺 NeighbVtx 0)) = ({0} ∪ (𝑉 ∖ {0}))) |
| 8 | 3 | snssd 4747 | . . 3 ⊢ (𝑁 ∈ ℕ0 → {0} ⊆ 𝑉) |
| 9 | undif 4438 | . . 3 ⊢ ({0} ⊆ 𝑉 ↔ ({0} ∪ (𝑉 ∖ {0})) = 𝑉) | |
| 10 | 8, 9 | sylib 221 | . 2 ⊢ (𝑁 ∈ ℕ0 → ({0} ∪ (𝑉 ∖ {0})) = 𝑉) |
| 11 | 5, 7, 10 | 3eqtrd 2799 | 1 ⊢ (𝑁 ∈ ℕ0 → (𝐺 ClNeighbVtx 0) = 𝑉) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 ∖ cdif 3896 ∪ cun 3897 ⊆ wss 3899 {csn 4584 ‘cfv 6535 (class class class)co 7416 0cc0 11149 ℕ0cn0 12553 Vtxcvtx 29485 NeighbVtx cnbgr 29824 ClNeighbVtx cclnbgr 48799 StarGrcstgr 48932 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7742 ax-cnex 11205 ax-resscn 11206 ax-1cn 11207 ax-icn 11208 ax-addcl 11209 ax-addrcl 11210 ax-mulcl 11211 ax-mulrcl 11212 ax-mulcom 11213 ax-addass 11214 ax-mulass 11215 ax-distr 11216 ax-i2m1 11217 ax-1ne0 11218 ax-1rid 11219 ax-rnegex 11220 ax-rrecex 11221 ax-cnre 11222 ax-pre-lttri 11223 ax-pre-lttrn 11224 ax-pre-ltadd 11225 ax-pre-mulgt0 11226 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 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 6301 df-ord 6362 df-on 6363 df-lim 6364 df-suc 6365 df-iota 6491 df-fun 6537 df-fn 6538 df-f 6539 df-f1 6540 df-fo 6541 df-f1o 6542 df-fv 6543 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7869 df-1st 7992 df-2nd 7993 df-frecs 8285 df-wrecs 8316 df-recs 8365 df-rdg 8404 df-1o 8462 df-oadd 8466 df-er 8703 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-dju 9931 df-card 9969 df-pnf 11294 df-mnf 11295 df-xr 11296 df-ltxr 11297 df-le 11298 df-sub 11492 df-neg 11493 df-nn 12283 df-2 12352 df-3 12353 df-4 12354 df-5 12355 df-6 12356 df-7 12357 df-8 12358 df-9 12359 df-n0 12554 df-xnn0 12627 df-z 12641 df-dec 12762 df-uz 12913 df-fz 13587 df-hash 14420 df-struct 17264 df-slot 17299 df-ndx 17311 df-base 17327 df-edgf 29478 df-vtx 29487 df-iedg 29488 df-edg 29537 df-nbgr 29825 df-clnbgr 48800 df-stgr 48933 |
| This theorem is used by: (None) |
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