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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 28663 | . 2 class ComplGraph | |
2 | vg | . . . . . 6 setvar 𝑔 | |
3 | 2 | cv 1540 | . . . . 5 class 𝑔 |
4 | cuvtx 28639 | . . . . 5 class UnivVtx | |
5 | 3, 4 | cfv 6543 | . . . 4 class (UnivVtx‘𝑔) |
6 | cvtx 28253 | . . . . 5 class Vtx | |
7 | 3, 6 | cfv 6543 | . . . 4 class (Vtx‘𝑔) |
8 | 5, 7 | wceq 1541 | . . 3 wff (UnivVtx‘𝑔) = (Vtx‘𝑔) |
9 | 8, 2 | cab 2709 | . 2 class {𝑔 ∣ (UnivVtx‘𝑔) = (Vtx‘𝑔)} |
10 | 1, 9 | wceq 1541 | 1 wff ComplGraph = {𝑔 ∣ (UnivVtx‘𝑔) = (Vtx‘𝑔)} |
Colors of variables: wff setvar class |
This definition is referenced by: cplgruvtxb 28667 |
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