Paderborn University

works on

density functional theory 1 electronic structure 1 high-performance computing 1 open-source software 1 plane-wave methods 1 pseudopotentials 1

From the 1 of 1.2k papers with an AI index.

output

19942026

most citedQuantum ESPRESSO: a modular and open-source software project for quantum simulations of materials

29.3k citations

Showing 2021 · math.COShow all

3 papers · 2 filters

math.CO2021★ 6 cited

Frustration-critical signed graphs

Chiara Cappello, Eckhard Steffen

A signed graph $(G, Σ)$ is a graph $G$ together with a set $Σ \subseteq E (G)$ of negative edges. A circuit is positive if the product of the signs of its edges is positive. A signed…

math.CO2021★ 4 cited

Even factors in edge-chromatic-critical graphs with a small number of divalent vertices

Eckhard Steffen, Isaak H. Wolf

A finite simple connected graph $G$ with maximum degree $k$ is $k$ -critical if it has chromatic index $χ^{'} (G) = k + 1$ and $χ^{'} (G - e) = k$ for every edge $e \in E (G)$ . Bej and the first auth…

math.CO2021★ 1 cited

Symmetric Set Coloring of Signed Graphs

Chiara Cappello, Eckhard Steffen

There are many concepts of signed graph coloring which are defined by assigning colors to the vertices of the graphs. These concepts usually differ in the number of self-inverse co…