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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 49263 | . . 3 ⊢ (𝑁 ∈ ℕ0 → 0 ∈ 𝑉) |
| 4 | 2 | dfclnbgr4 49125 | . . 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 49265 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (𝐺 NeighbVtx 0) = (𝑉 ∖ {0})) |
| 7 | 6 | uneq2d 4170 | . 2 ⊢ (𝑁 ∈ ℕ0 → ({0} ∪ (𝐺 NeighbVtx 0)) = ({0} ∪ (𝑉 ∖ {0}))) |
| 8 | 3 | snssd 4747 | . . 3 ⊢ (𝑁 ∈ ℕ0 → {0} ⊆ 𝑉) |
| 9 | undif 4441 | . . 3 ⊢ ({0} ⊆ 𝑉 ↔ ({0} ∪ (𝑉 ∖ {0})) = 𝑉) | |
| 10 | 8, 9 | sylib 221 | . 2 ⊢ (𝑁 ∈ ℕ0 → ({0} ∪ (𝑉 ∖ {0})) = 𝑉) |
| 11 | 5, 7, 10 | 3eqtrd 2802 | 1 ⊢ (𝑁 ∈ ℕ0 → (𝐺 ClNeighbVtx 0) = 𝑉) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ⊆ wss 3900 ∖ cdif 4048 ∪ cun 4152 {csn 4588 ‘cfv 6555 (class class class)co 7440 0cc0 11224 ℕ0cn0 12630 Vtxcvtx 29601 NeighbVtx cnbgr 29940 ClNeighbVtx cclnbgr 49119 StarGrcstgr 49252 |
| 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-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-oadd 8505 df-er 8742 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-3 12430 df-4 12431 df-5 12432 df-6 12433 df-7 12434 df-8 12435 df-9 12436 df-n0 12631 df-xnn0 12704 df-z 12718 df-dec 12839 df-uz 12990 df-fz 13664 df-hash 14499 df-struct 17351 df-slot 17386 df-ndx 17398 df-base 17414 df-edgf 29594 df-vtx 29603 df-iedg 29604 df-edg 29653 df-nbgr 29941 df-clnbgr 49120 df-stgr 49253 |
| This theorem is used by: (None) |
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