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| Mirrors > Home > MPE Home > Th. List > df-cplgr | Structured version Visualization version GIF version | ||
| Description: Define the class of all complete "graphs". A class/graph is called complete if every pair of distinct vertices is connected by an edge, i.e., each vertex has all other vertices as neighbors or, in other words, each vertex is a universal vertex. (Contributed by AV, 24-Oct-2020.) (Revised by TA, 15-Feb-2022.) |
| Ref | Expression |
|---|---|
| df-cplgr | ⊢ ComplGraph = {𝑔 ∣ (UnivVtx‘𝑔) = (Vtx‘𝑔)} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ccplgr 29870 | . 2 class ComplGraph | |
| 2 | vg | . . . . . 6 setvar 𝑔 | |
| 3 | 2 | cv 1569 | . . . . 5 class 𝑔 |
| 4 | cuvtx 29846 | . . . . 5 class UnivVtx | |
| 5 | 3, 4 | cfv 6537 | . . . 4 class (UnivVtx‘𝑔) |
| 6 | cvtx 29454 | . . . . 5 class Vtx | |
| 7 | 3, 6 | cfv 6537 | . . . 4 class (Vtx‘𝑔) |
| 8 | 5, 7 | wceq 1570 | . . 3 wff (UnivVtx‘𝑔) = (Vtx‘𝑔) |
| 9 | 8, 2 | cab 2740 | . 2 class {𝑔 ∣ (UnivVtx‘𝑔) = (Vtx‘𝑔)} |
| 10 | 1, 9 | wceq 1570 | 1 wff ComplGraph = {𝑔 ∣ (UnivVtx‘𝑔) = (Vtx‘𝑔)} |
| Colors of variables: wff setvar class |
| This definition is used by: cplgruvtxb 29874 |
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