activity
20122026
most citedMaximum and minimum nullity of a tree degree sequence

2 citations · 7 across the 11 of their papers we have counts for

collaborators

16 papers

math.CO2026

Generalized Sterboul--Deming Configurations

Daniel A Jaume, Cristian Panelo, Kevin Pereyra

Sterboul and Deming gave classical matching-based characterizations of non-Kőnig--Egerváry graphs through flower--posy and blossom-pair configurations. We consider two classical co…

math.CO2026

Generalized Edmonds-Sterboul-Deming configurations. Part 1: Sterboul-Deming graphs

Daniel A. Jaume, Cristian Panelo, Kevin Pereyra

We introduce two new types of graph configurations, the Jflower and the Jposy, which generalize the classical flower and posy configurations of Edmonds, Sterboul, and Deming in the…

math.CO2026

2-switch: transition and stability on forests and pseudofests

Victor N. Schvöllner, Adrián Pastine, Daniel A. Jaume

Given any two forests (pseudoforests) with the same degree sequence, we show that one can be transformed into the other by a sequence of 2-switches in such a way that all the inter…

math.CO2026

Generalized Edmonds-Sterboul-Deming configurations Part 3: Determinantal multiplicativity of the SD-KE decomposition of matchable graphs

Daniel A. Jaume, Diego G. Martinez, Cristian Panelo +1

In this work it is shown that the SD-KE decomposition is multiplicative under determinantal-type functions for graphs with perfect matchings, providing a new tool for the study of…

math.CO2025

On the nullspace of split graphs

Daniel A. Jaume, Victor N. Schvöllner, Cristian Panelo +1

We study the nullspace of the adjacency matrix of split graphs, whose vertex set can be partitioned into a clique and an independent set. We introduce the clique-kernel, a subspace…

math.CO2021

2-switch transition on unicyclic graphs and pseudoforest

Daniel A. Jaume, Adrián Pastine, Victor Schvöllner

In the present work we prove that given any two unicycle graphs (pseudoforests) that share the same degree sequence there is a finite sequence of 2-switches transforming one into t…