activity
20102024
most citedSparse Sums of Positive Semidefinite Matrices

16 citations · 35 across the 9 of their papers we have counts for

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10 papers · 1 filter

math.CO2024

Extremal Problems on Forest Cuts and Acyclic Neighborhoods in Sparse Graphs

F. Botler, Y. S. Couto, C. G. Fernandes +4

Chernyshev, Rauch, and Rautenbach proved that every connected graph on vertices with less than edges has a vertex cut that induces a forest, and co…

math.CO2016★ 3 cited

Flag Algebras: A First Glance

Marcel K. de Carli Silva, Fernando Mário de Oliveira Filho, Cristiane Maria Sato

The theory of flag algebras, introduced by Razborov in 2007, has opened the way to a systematic approach to the development of computer-assisted proofs in extremal combinatorics. I…

math.CO2016

Packing arborescences in random digraphs

Carlos Hoppen, Roberto F. Parente, Cristiane M. Sato

We study the problem of packing arborescences in the random digraph , where each possible arc is included uniformly at random with probability . Let $λ(\ma…

math.CO2015

On the maximum density of fixed strongly connected subtournaments

Leonardo N. Coregliano, Roberto F. Parente, Cristiane M. Sato

We study the density of fixed strongly connected subtournaments on 5 vertices in large tournaments. We determine the maximum density asymptotically for five tournaments as well as…

math.CO2014★ 3 cited

Asymptotic enumeration of sparse connected 3-uniform hypergraphs

Cristiane M. Sato, Nick Wormald

We derive an asymptotic formula for the number of connected 3-uniform hypergraphs with vertex set and edges for as long as satisfies and $R=ω(N^{…

math.CO2013

A transition of limiting distributions of large matchings in random graphs

Pu Gao, Cristiane M. Sato

We study the asymptotic distribution of the number of matchings of size in for a wide range of and for every $1\le \ell\le \lfloor n/2\rfl…

math.CO2013★ 8 cited

On the Longest Paths and the Diameter in Random Apollonian Networks

Ehsan Ebrahimzadeh, Linda Farczadi, Pu Gao +4

We consider the following iterative construction of a random planar triangulation. Start with a triangle embedded in the plane. In each step, choose a bounded face uniformly at ran…

math.CO2013★ 2 cited

Arboricity and spanning-tree packing in random graphs with an application to load balancing

Pu Gao, Xavier Pérez-Giménez, Cristiane M. Sato

We study the arboricity A and the maximum number T of edge-disjoint spanning trees of the Erdos-Renyi random graph G(n,p). For all p(n) in [0,1], we show that, with high probabilit…

math.CO2012★ 3 cited

On the robustness of random k-cores

Cristiane M. Sato

The k-core of a graph is its maximal subgraph with minimum degree at least k. In this paper, we address robustness questions about k-cores. Given a k-core, remove one edge uniforml…

math.CO2010

Asymptotic enumeration of sparse 2-connected graphs

Graeme Kemkes, Cristiane M. Sato, Nicholas Wormald

We determine an asymptotic formula for the number of labelled 2-connected (simple) graphs on vertices and edges, provided that and as $n\to\in…