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8 214 (0,152s)

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On magicness and antimagicness of the union of 4-regular circulant graphs

In this paper, we study the vertex-magicness and vertex-antimagicness of the union of 4-regular circulant graphs.

BA - Obecná matematika

  • 2011
  • Jx
Result

Vertex-transitive Haar graphs that are not Cayley graphs

a question whether there exist vertex-transitive Haar graphs that are not Cayley graphs. In this note we construct an infinite family of trivalent Haar graphs that are vertex Kronecker cover over the dode...

Pure mathematics

  • 2018
  • D
  • Link
Result

VERTEX and Casual Graphs of Linear Systems

The paper deals with connections between the so-called VERTEX and causal graphs. It is known that a certain class of circuit structures exists whose VERTEX graph can causal graph, when at most one degree o...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2001
  • D
Result

Antimagic Labeling of Generalized Pyramid Graphs

An antimagic labeling of a graph with q edges is a bijection from the set of edges to the set of positive integers {1,2,...,q} such that all vertex weights are pairwise distinct, where the vertex weight of a vertex...

BA - Obecná matematika

  • 2014
  • Jx
  • Link
Result

A Single-Exponential Fixed-Parameter Algorithm for Distance-Hereditary Vertex Deletion

-exponential fixed-parameter algorithm for vertex deletion to distance-hereditary graphs, a well-studied graph class which is particularly important in the context of vertexVertex deletion problems ask whe...

IN - Informatika

  • 2016
  • D
  • Link
Result

Flows on the join of two graphs

We prove that the join of two graphs admits a nowhere-zero 3-flow except for a few classes of graphs: a single vertex joined with a graph containing an isolated vertex or an odd circuit tree component, a s...

BA - Obecná matematika

  • 2013
  • Jx
Result

Approximations of permutation-symmetric vertex couplings in quantum graphs

Approximations of interactions at the vertices of quantum graphs.

BE - Teoretická fyzika

  • 2006
  • D
Result

Totally antimagic total graphs

For a graph G, a bijection from the vertex set and the edge set of G to the set. The vertex-weight of a vertex is the sum of the label of the vertex and the labels of all the edges incident with that v...

BA - Obecná matematika

  • 2015
  • Jx
Result

Vertex Couplings in quantum Graphs: Approximations by Scaled Schrödinger Operators

We review recent progress in understanding the physical meaning of quantum graph models through analysis of their vertex coupling approximations....

Pure mathematics

  • 2011
  • D
Result

Vertex labellings of simple graphs

By the book 'Vertex labellings of simple graphs' culminated a seven-year effort of the authors to examine the vertex labellings of graphs via a new method of so-called monograph. The book introduced new concepts of...

BA - Obecná matematika

  • 2015
  • B
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