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1 vote
1 answer
85 views

Probability of randomly finding a loop in a (directed) Bernoulli random graph

This problem is inspired by an activity at work, where each person was tasked with introducing another person in the onboarding class, sequentially. Problem Statement Given $N$ people. For each pair ...
6 votes
0 answers
164 views

Hamilton cycles in random graphs with just enough connectivity

What is the asymptotic probability that $G$ has a Hamilton cycle if $G$ is a random $n$ vertex $\frac{4}{3}n$ edge graph, with minimum degree 2 and without degree 2 vertices at distance 1 or 2 to each ...
0 votes
1 answer
115 views

Sources of information on algorithms for finding Hamiltonian cycles (Pósa)

I research various algorithms in complex networks and I am quite new in this field. I am currently focusing on random geometric graphs - Pósa's algorithm for finding a hamiltonian cycle. Can you ...
1 vote
0 answers
105 views

Understanding the finale of the proof of Komlós' and Szemerédi's limit distribution of Hamiltonian random graphs

My question is about the end of the proof of Theorem 1 in [Komlós, Szemerédi (1983)], more precisely the arguments in Subsection 2.3. Let me state the beautiful theorem I am trying to understand in my ...
3 votes
1 answer
117 views

Hamiltonicity of random graphs with high girth

We say that $G\sim G_{n,f}$ (for $f=f(n)$) if $G$ is chosen uniformly at random from all graphs on $n$ vertices with girth $g(G)\ge f(n)$. Is there any threshold function $F(n)$ such that when $f\ll F$...