Exploring chordal sparsity in semidefinite programming with sparse plus low-rank data matrices

T Tang, KC Toh - arXiv preprint arXiv:2410.23849, 2024 - arxiv.org
Semidefinite programming (SDP) problems are challenging to solve because of their high
dimensionality. However, solving sparse SDP problems with small tree-width are known to …

On the tree-depth and tree-width in heterogeneous random graphs

Y Shang - 2022 - projecteuclid.org
In this note, we investigate the tree-depth and tree-width in a heterogeneous random graph
obtained by including each edge e_ij (i≠j) of a complete graph K_n over n vertices …

The emergence of a giant rainbow component

O Cooley, TA Do, J Erde, M Missethan - arXiv preprint arXiv:2210.11972, 2022 - arxiv.org
The random coloured graph $ G_c (n, p) $ is obtained from the Erd\H {o} sR\'{e} nyi binomial
random graph $ G (n, p) $ by assigning to each edge a colour from a set of $ c $ colours …

Local treewidth of random and noisy graphs with applications to stopping contagion in networks

H Mehta, D Reichman - arXiv preprint arXiv:2204.07827, 2022 - arxiv.org
We study the notion of local treewidth in sparse random graphs: the maximum treewidth over
all $ k $-vertex subgraphs of an $ n $-vertex graph. When $ k $ is not too large, we give …