**About the Editors**

**J.E. Trinidad-Segovia** (Ph .D.) is an Associate Professor of Finance at the Department of Economics and Business, University of Almer´ıa, Spain. His research interests include financial modeling, portfolio selection, CAPM, and applications of statistical mechanics to financial markets. He has published over 30 papers in peer-reviewed journals.

**Miguel Angel S´ ´ anchez-Granero** (Ph. D.) is an Associate Professor at the Department of Mathematics, University of Almer´ıa, Spain. He is the author of several publications in international journals on asymmetric topology, self-similarity, fractal structures, and fractal dimension with applications in financial series.
