Affiliation: | 1.College of Engineering, Mathematics and Physical Sciences, Harrison Building, Streatham Campus, University of Exeter, North Park Road, Exeter, EX4 4QF, UK ;2.IIMAS, Universidad Nacional Autónoma de México. CDMX, 04510, Mexico City, México ;3.Centro de Investigación en Matemáticas A.C. Calle Jalisco s/n., 36240, Guanajuato, México ; |