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Questions about the branch of combinatorics called graph theory (not to be used for questions concerning the graph of a function). This tag can be further specialized via using it in combination with more specialized tags such as extremal-graph-theory, spectral-graph-theory, algebraic-graph-theory, topological-graph-theory, random-graphs, graph-colorings and several others.

5 votes
1 answer
305 views

Probability of the random graph on $2n$ vertices having exactly $n$ vertices with degree $\g...

Let $G = (V, E)$ be a uniform random graph on $2n$ labeled vertices and let $S \subseteq {V}$ be the set of vertices with degree $\ge n$. Then what happens to $\mathbf{P}(|S|=n)$ as $n \to \infty$? Fr …
Nikita Gladkov's user avatar
1 vote
0 answers
61 views

Nonintersecting witnesses of connectivity events in graphs

In my research I stumbled across a following result: Let $G = (V, E)$ be a multigraph with three chosen vertices $a, b, c \in V$. We color its edges into red and blue colors: $E = R \sqcup S$. Events …
Nikita Gladkov's user avatar