| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > cplgr2vpr | Structured version Visualization version GIF version | ||
| Description: An undirected hypergraph with two (different) vertices is complete iff there is an edge between these two vertices. (Contributed by Alexander van der Vekens, 12-Oct-2017.) (Proof shortened by Alexander van der Vekens, 16-Dec-2017.) (Revised by AV, 3-Nov-2020.) |
| Ref | Expression |
|---|---|
| cplgr0v.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| cplgr2v.e | ⊢ 𝐸 = (Edg‘𝐺) |
| Ref | Expression |
|---|---|
| cplgr2vpr | ⊢ (((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌 ∧ 𝐴 ≠ 𝐵) ∧ (𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵})) → (𝐺 ∈ ComplGraph ↔ {𝐴, 𝐵} ∈ 𝐸)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 487 | . . 3 ⊢ ((𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵}) → 𝐺 ∈ UHGraph) | |
| 2 | fveq2 6882 | . . . . 5 ⊢ (𝑉 = {𝐴, 𝐵} → (♯‘𝑉) = (♯‘{𝐴, 𝐵})) | |
| 3 | 2 | adantl 486 | . . . 4 ⊢ ((𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵}) → (♯‘𝑉) = (♯‘{𝐴, 𝐵})) |
| 4 | elex 3484 | . . . . 5 ⊢ (𝐴 ∈ 𝑋 → 𝐴 ∈ V) | |
| 5 | elex 3484 | . . . . 5 ⊢ (𝐵 ∈ 𝑌 → 𝐵 ∈ V) | |
| 6 | id 23 | . . . . 5 ⊢ (𝐴 ≠ 𝐵 → 𝐴 ≠ 𝐵) | |
| 7 | hashprb 14433 | . . . . . 6 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V ∧ 𝐴 ≠ 𝐵) ↔ (♯‘{𝐴, 𝐵}) = 2) | |
| 8 | 7 | biimpi 219 | . . . . 5 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V ∧ 𝐴 ≠ 𝐵) → (♯‘{𝐴, 𝐵}) = 2) |
| 9 | 4, 5, 6, 8 | syl3an 1176 | . . . 4 ⊢ ((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌 ∧ 𝐴 ≠ 𝐵) → (♯‘{𝐴, 𝐵}) = 2) |
| 10 | 3, 9 | sylan9eqr 2826 | . . 3 ⊢ (((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌 ∧ 𝐴 ≠ 𝐵) ∧ (𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵})) → (♯‘𝑉) = 2) |
| 11 | cplgr0v.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 12 | cplgr2v.e | . . . 4 ⊢ 𝐸 = (Edg‘𝐺) | |
| 13 | 11, 12 | cplgr2v 29723 | . . 3 ⊢ ((𝐺 ∈ UHGraph ∧ (♯‘𝑉) = 2) → (𝐺 ∈ ComplGraph ↔ 𝑉 ∈ 𝐸)) |
| 14 | 1, 10, 13 | syl2an2 698 | . 2 ⊢ (((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌 ∧ 𝐴 ≠ 𝐵) ∧ (𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵})) → (𝐺 ∈ ComplGraph ↔ 𝑉 ∈ 𝐸)) |
| 15 | simprr 784 | . . 3 ⊢ (((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌 ∧ 𝐴 ≠ 𝐵) ∧ (𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵})) → 𝑉 = {𝐴, 𝐵}) | |
| 16 | 15 | eleq1d 2854 | . 2 ⊢ (((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌 ∧ 𝐴 ≠ 𝐵) ∧ (𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵})) → (𝑉 ∈ 𝐸 ↔ {𝐴, 𝐵} ∈ 𝐸)) |
| 17 | 14, 16 | bitrd 282 | 1 ⊢ (((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑌 ∧ 𝐴 ≠ 𝐵) ∧ (𝐺 ∈ UHGraph ∧ 𝑉 = {𝐴, 𝐵})) → (𝐺 ∈ ComplGraph ↔ {𝐴, 𝐵} ∈ 𝐸)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1101 = wceq 1567 ∈ wcel 2149 ≠ wne 2964 Vcvv 3463 {cpr 4596 ‘cfv 6537 2c2 12295 ♯chash 14366 Vtxcvtx 29287 Edgcedg 29338 UHGraphcuhgr 29347 ComplGraphccplgr 29700 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11156 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-int 4917 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7863 df-1st 7986 df-2nd 7987 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-1o 8453 df-2o 8454 df-oadd 8457 df-er 8694 df-en 8944 df-dom 8945 df-sdom 8946 df-fin 8947 df-dju 9887 df-card 9925 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-nn 12234 df-2 12303 df-n0 12505 df-z 12592 df-uz 12863 df-fz 13536 df-hash 14367 df-edg 29339 df-uhgr 29349 df-nbgr 29624 df-uvtx 29677 df-cplgr 29702 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |