| Affiliation: | 1. Departamento de Matemáticas, Universidad de León, Spain;2. Departamento de Matemáticas, Universidad de Salamanca, Spain;1. Department of Mathematics, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 165 21, Prague, Czech Republic;2. Google Germany GmbH, Erika-Mann-Straße 33, 80636 München, Germany;1. Technology Innovation Institute, Abu Dhabi, United Arab Emirates;2. Università degli Studi di Torino, Dipartimento di Matematica, Via Carlo Alberto 10, 10123 Torino, Italy;1. Department of Applied Mathematics and Computer Science, Technical University of Denmark, Matematiktorvet 303B, 2800 Kgs. Lyngby, Denmark;2. Department of Mathematics and Statistics, University of Tromsø, Hansine Hansens veg 18, 9019, Norway |
