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The causal boundary of wave-type spacetimes
José Luis Flores, Miguel Sánchez
A complete and systematic approach to compute the causal boundary of wave-type spacetimes is carried out. The case of a 1-dimensional boundary is specially analyzed and its critica…
Who is the best connected EC researcher? Centrality analysis of the complex network of authors in evolutionary computation
Juan J. Merelo, Carlos Cotta
Co-authorship graphs (that is, the graph of authors linked by co-authorship of papers) are complex networks, which expresses the dynamics of a complex system. Only recently its stu…
The causal boundary of product spacetimes
V. Alana, J. L. Flores
The new formulation of the causal completion of spacetimes suggested in [1], and modified later in [2], is tested by computing the causal boundary for product spacetimes of a Loren…
The socle of a Leavitt path algebra
Gonzalo Aranda Pino, Dolores Martin Barquero, Candido Martin Gonzalez +1
In this paper we characterize the minimal left ideals of a Leavitt path algebra as those ones which are isomorphic to principal left ideals generated by line point vertices, that i…