3 citations · 8 across the 9 of their papers we have counts for
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How to construct the symmetric cycle of length 5 using Hajós construction with an adapted Rank Genetic Algorithm
Juan Carlos García-Altamirano, Mika Olsen, Jorge Cervantes-Ojeda
In 2020 Bang-Jensen et. al. generalized the Hajós join of two graphs to the class of digraphs and generalized several results for vertex colorings in digraphs. Although, as a conse…
On the harmonious chromatic number of graphs
Gabriela Araujo-Pardo, Juan José Montellano-Ballesteros, Mika Olsen +1
The harmonious chromatic number of a graph is the minimum number of colors that can be assigned to the vertices of in a proper way such that any two distinct edges have dif…
Zykov sums of digraphs with diachromatic number equal to their harmonious number
Mika Olsen, Christian Rubio-Montiel, Alejandra Silva-Ramírez
The dichromatic number and the diachromatic number are generalizations of the chromatic number and the achromatic number for digraphs considering acyclic colorings. In this paper,…