Results 41 to 50 of about 413 (110)

Outerplane bipartite graphs with isomorphic resonance graphs

open access: yes, 2023
We present novel results related to isomorphic resonance graphs of 2-connected outerplane bipartite graphs. As the main result, we provide a structure characterization for 2-connected outerplane bipartite graphs with isomorphic resonance graphs. Moreover,
Brezovnik, Simon   +3 more
core  

Two essays in computational optimization: computing the clar number in fullerene graphs and distributing the errors in iterative interior point methods [PDF]

open access: yes, 2018
Fullerene are cage-like hollow carbon molecules graph of pseudospherical sym- metry consisting of only pentagons and hexagons faces. It has been the object of interest for chemists and mathematicians due to its widespread application in various fields,
SALAMI, MARYAM
core  

On the Geometric-Arithmetic Index [PDF]

open access: yes, 2015
The concept of geometric-arithmetic index was introduced in the chemical graph theory recently, but it has shown to be useful. The aim of this paper is to obtain new inequalities involving the geometric-arithmetic index GA1 and characterize graphs ...
Rodríguez García, José Manuel   +1 more
core  

Generalized Operations on Maps [PDF]

open access: yes, 2006
A map M is a combinatorial representation of a closed surface. Convex polyhedra, starting from the Platonic solids and going to spherical fullerenes, can be operated to obtain new objects, with a larger number of vertices and various tiling.
Ante Graovac   +3 more
core   +1 more source

Some Extremal And Structural Problems In Graph Theory [PDF]

open access: yes, 2016
This work considers three main topics. In Chapter 2, we deal with König-Egerváry graphs. We will give two new characterizations of König-Egerváry graphs as well as prove a related lower bound for the independence number of a graph. In Chapter 3, we study
Short, Taylor Mitchell
core   +1 more source

Trichalcogenasupersumanenes and its concave-convex supramolecular assembly with fullerenes. [PDF]

open access: yesNat Commun, 2023
Sun Y   +13 more
europepmc   +1 more source

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