Examples of using Eulerian in English and their translations into Serbian
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Counting Eulerian circuits.
This means the Königsberg graph is not Eulerian.
Constructing Eulerian trails and circuits.
Route inspection problem, search for the shortest paththat visits all edges, possibly repeating edges if an Eulerian path does not exist.
This graph is not Eulerian, therefore, a solution does not exist.
Therefore, this is an Eulerian graph.
The term Eulerian graph has two common meanings in graph theory.
It's the same with any Eulerian circuit.
Counting the number of Eulerian circuits on undirected graphs is much more difficult.
In a positive direction, a Markov chain Monte Carlo approach, via the Kotzig transformations(introduced by Anton Kotzig in 1968)is believed to give a sharp approximation for the number of Eulerian circuits in a graph, though as yet there is no proof of this fact(even for graphs of bounded degree).
A graph that has an Eulerian trail but not an Eulerian circuit is called semi-Eulerian.
This problem is known to be P-complete.[9] In a positive direction, a Markov chain Monte Carlo approach, via the Kotzig transformations(introduced by Anton Kotzig in 1968)is believed to give a sharp approximation for the number of Eulerian circuits in a graph, though as yet there is no proof of this fact(even for graphs of bounded degree).
The definition and properties of Eulerian trails, cycles and graphs are valid for multigraphs as well.
An Eulerian cycle,[3] Eulerian circuit or Euler tour in an undirected graph is a cycle that uses each edge exactly once.
An undirected, connected graph has an Eulerian path if and only if it has either 0 or 2 vertices of odd degree.
An Eulerian trail,[3] or Euler walk in an undirected graph is a walk that uses each edge exactly once.
The answer is- yes,because the contour is an Eulerian graph: in every vertex there is an even number of edges.
The term"Eulerian graph" is also sometimes used in a weaker sense to denote a graph where every vertex has even degree.
If there are exactly two vertices of odd degree, all Eulerian paths start at one of them and end at the other.
Similarly, an Eulerian circuit orEulerian cycle is an Eulerian trail which starts and ends on the same vertex.
For finite connected graphs the two definitions are equivalent, while a possibly unconnected graph is Eulerian in the weaker sense if andonly if each connected component has an Eulerian cycle.
For the existence of Eulerian trails it is necessary that zero or two vertices have an odd degree;this means the Königsberg graph is not Eulerian.
At the end of the algorithm there are no edges left, andthe sequence from which the edges were chosen forms an Eulerian cycle if the graph has no vertices of odd degree, or an Eulerian trail if there are exactly two vertices of odd degree.
The number of Eulerian circuits in digraphs can be calculated using the so-called BEST theorem, named after de Bruijn, van Aardenne-Ehrenfest, Smith and Tutte.
The following classes are GI-complete: connected graphs graphs of diameter 2 andradius 1 directed acyclic graphs regular graphs bipartite graphs without non-trivial strongly regular subgraphs bipartite Eulerian graphs bipartite regular graphs line graphs split graphs chordal graphs regular self-complementary graphs polytopal graphs of general, simple,!
The formula states that the number of Eulerian circuits in a digraph is the product of certain degree factorials and the number of rooted arborescences.
Every Eulerian graph is a projection of some knot or link and vice versa Such a projection is called regular if the graph is 4-regular, i.e. if the valence of every vertex is 4.
An undirected graph has an Eulerian cycle if and only if every vertex has even degree, and all of its vertices with nonzero degree belong to a single connected component.
Eulerian matroid, an abstract generalization of Eulerian graphs Five room puzzle Handshaking lemma, proven by Euler in his original paper, showing that any undirected connected graph has an even number of odd-degree vertices Hamiltonian path- a path that visits each vertex exactly once. Route inspection problem, search for the shortest path that visits all edges, possibly repeating edges if an Eulerian path does not exist.
If such a cycle exists, the graph is called Eulerian or unicursal.[5] The term"Eulerian graph" is also sometimes used in a weaker sense to denote a graph where every vertex has even degree.
