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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 27776 | . 2 class ComplGraph | |
2 | vg | . . . . . 6 setvar 𝑔 | |
3 | 2 | cv 1538 | . . . . 5 class 𝑔 |
4 | cuvtx 27752 | . . . . 5 class UnivVtx | |
5 | 3, 4 | cfv 6433 | . . . 4 class (UnivVtx‘𝑔) |
6 | cvtx 27366 | . . . . 5 class Vtx | |
7 | 3, 6 | cfv 6433 | . . . 4 class (Vtx‘𝑔) |
8 | 5, 7 | wceq 1539 | . . 3 wff (UnivVtx‘𝑔) = (Vtx‘𝑔) |
9 | 8, 2 | cab 2715 | . 2 class {𝑔 ∣ (UnivVtx‘𝑔) = (Vtx‘𝑔)} |
10 | 1, 9 | wceq 1539 | 1 wff ComplGraph = {𝑔 ∣ (UnivVtx‘𝑔) = (Vtx‘𝑔)} |
Colors of variables: wff setvar class |
This definition is referenced by: cplgruvtxb 27780 |
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