Calculating the maximum number of maximum cliques for simple graphs
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866911320543068160 |
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| author | Pfeifer, Dániel |
| author_facet | Pfeifer, Dániel |
| contents | A simple graph on $n$ vertices may contain a lot of maximum cliques. But how many can it potentially contain? We will define prime and composite graphs, and we will show that if $n \ge 15$, then the grpahs with the maximum number of maximum cliques have to be composite. Moreover, we will show an edge bound from which we will prove that if any factor of a composite graph has $ω(G_i) \ge 5$, then it cannot have the maximum number of maximum cliques. Using this we will show that the graph that contains $3^{\lfloor n/3 \rfloor}c$ maximum cliques has the most number of maximum cliques on $n$ vertices, where $c\in\{1,\frac{4}{3},2\}$, depending on $n \text{ mod } 3$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2307_14120 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Calculating the maximum number of maximum cliques for simple graphs Pfeifer, Dániel Combinatorics Machine Learning 05C69 G.2.2 A simple graph on $n$ vertices may contain a lot of maximum cliques. But how many can it potentially contain? We will define prime and composite graphs, and we will show that if $n \ge 15$, then the grpahs with the maximum number of maximum cliques have to be composite. Moreover, we will show an edge bound from which we will prove that if any factor of a composite graph has $ω(G_i) \ge 5$, then it cannot have the maximum number of maximum cliques. Using this we will show that the graph that contains $3^{\lfloor n/3 \rfloor}c$ maximum cliques has the most number of maximum cliques on $n$ vertices, where $c\in\{1,\frac{4}{3},2\}$, depending on $n \text{ mod } 3$. |
| title | Calculating the maximum number of maximum cliques for simple graphs |
| topic | Combinatorics Machine Learning 05C69 G.2.2 |
| url | https://arxiv.org/abs/2307.14120 |