| Mathbox for Alexander van der Vekens |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > clnbupgr | Structured version Visualization version GIF version | ||
| Description: The closed neighborhood of a vertex in a pseudograph. (Contributed by AV, 10-May-2025.) |
| Ref | Expression |
|---|---|
| clnbuhgr.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| clnbuhgr.e | ⊢ 𝐸 = (Edg‘𝐺) |
| Ref | Expression |
|---|---|
| clnbupgr | ⊢ ((𝐺 ∈ UPGraph ∧ 𝑁 ∈ 𝑉) → (𝐺 ClNeighbVtx 𝑁) = ({𝑁} ∪ {𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸})) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | clnbuhgr.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 2 | 1 | dfclnbgr4 49029 | . . 3 ⊢ (𝑁 ∈ 𝑉 → (𝐺 ClNeighbVtx 𝑁) = ({𝑁} ∪ (𝐺 NeighbVtx 𝑁))) |
| 3 | 2 | adantl 487 | . 2 ⊢ ((𝐺 ∈ UPGraph ∧ 𝑁 ∈ 𝑉) → (𝐺 ClNeighbVtx 𝑁) = ({𝑁} ∪ (𝐺 NeighbVtx 𝑁))) |
| 4 | clnbuhgr.e | . . . 4 ⊢ 𝐸 = (Edg‘𝐺) | |
| 5 | 1, 4 | nbupgr 29932 | . . 3 ⊢ ((𝐺 ∈ UPGraph ∧ 𝑁 ∈ 𝑉) → (𝐺 NeighbVtx 𝑁) = {𝑛 ∈ (𝑉 ∖ {𝑁}) ∣ {𝑁, 𝑛} ∈ 𝐸}) |
| 6 | 5 | uneq2d 4166 | . 2 ⊢ ((𝐺 ∈ UPGraph ∧ 𝑁 ∈ 𝑉) → ({𝑁} ∪ (𝐺 NeighbVtx 𝑁)) = ({𝑁} ∪ {𝑛 ∈ (𝑉 ∖ {𝑁}) ∣ {𝑁, 𝑛} ∈ 𝐸})) |
| 7 | rabdif 4265 | . . . . . 6 ⊢ ({𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸} ∖ {𝑁}) = {𝑛 ∈ (𝑉 ∖ {𝑁}) ∣ {𝑁, 𝑛} ∈ 𝐸} | |
| 8 | 7 | eqcomi 2769 | . . . . 5 ⊢ {𝑛 ∈ (𝑉 ∖ {𝑁}) ∣ {𝑁, 𝑛} ∈ 𝐸} = ({𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸} ∖ {𝑁}) |
| 9 | 8 | uneq2i 4163 | . . . 4 ⊢ ({𝑁} ∪ {𝑛 ∈ (𝑉 ∖ {𝑁}) ∣ {𝑁, 𝑛} ∈ 𝐸}) = ({𝑁} ∪ ({𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸} ∖ {𝑁})) |
| 10 | undif2 4430 | . . . 4 ⊢ ({𝑁} ∪ ({𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸} ∖ {𝑁})) = ({𝑁} ∪ {𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸}) | |
| 11 | 9, 10 | eqtri 2783 | . . 3 ⊢ ({𝑁} ∪ {𝑛 ∈ (𝑉 ∖ {𝑁}) ∣ {𝑁, 𝑛} ∈ 𝐸}) = ({𝑁} ∪ {𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸}) |
| 12 | 11 | a1i 11 | . 2 ⊢ ((𝐺 ∈ UPGraph ∧ 𝑁 ∈ 𝑉) → ({𝑁} ∪ {𝑛 ∈ (𝑉 ∖ {𝑁}) ∣ {𝑁, 𝑛} ∈ 𝐸}) = ({𝑁} ∪ {𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸})) |
| 13 | 3, 6, 12 | 3eqtrd 2799 | 1 ⊢ ((𝐺 ∈ UPGraph ∧ 𝑁 ∈ 𝑉) → (𝐺 ClNeighbVtx 𝑁) = ({𝑁} ∪ {𝑛 ∈ 𝑉 ∣ {𝑁, 𝑛} ∈ 𝐸})) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 {crab 3412 ∖ cdif 4044 ∪ cun 4148 {csn 4584 {cpr 4586 ‘cfv 6541 (class class class)co 7422 Vtxcvtx 29581 Edgcedg 29632 UPGraphcupgr 29665 NeighbVtx cnbgr 29920 ClNeighbVtx cclnbgr 49023 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7753 ax-cnex 11261 ax-resscn 11262 ax-1cn 11263 ax-icn 11264 ax-addcl 11265 ax-addrcl 11266 ax-mulcl 11267 ax-mulrcl 11268 ax-mulcom 11269 ax-addass 11270 ax-mulass 11271 ax-distr 11272 ax-i2m1 11273 ax-1ne0 11274 ax-1rid 11275 ax-rnegex 11276 ax-rrecex 11277 ax-cnre 11278 ax-pre-lttri 11279 ax-pre-lttrn 11280 ax-pre-ltadd 11281 ax-pre-mulgt0 11282 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7379 df-ov 7425 df-oprab 7426 df-mpo 7427 df-om 7880 df-1st 8003 df-2nd 8004 df-frecs 8304 df-wrecs 8335 df-recs 8384 df-rdg 8423 df-1o 8481 df-2o 8482 df-oadd 8485 df-er 8722 df-en 8979 df-dom 8980 df-sdom 8981 df-fin 8982 df-dju 9987 df-card 10025 df-pnf 11350 df-mnf 11351 df-xr 11352 df-ltxr 11353 df-le 11354 df-sub 11548 df-neg 11549 df-nn 12341 df-2 12410 df-n0 12612 df-xnn0 12685 df-z 12699 df-uz 12971 df-fz 13645 df-hash 14480 df-edg 29633 df-upgr 29667 df-nbgr 29921 df-clnbgr 49024 |
| This theorem is used by: clnbupgrel 49039 |
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