Clarice Dias de Albuquerque is an adjoint professor at the Federal University of Cariri, Brazil. She holds Bachelor's and Master's degrees from the Federal University of Ceará, Brazil, and a PhD in Electrical Engineering from the State University of Campinas, Brazil.
Eduardo Brandani da Silva is an Associate Professor at the State University of Maringá, Brazil. He holds Bachelor's (1988) and Master's degrees (1992) in Mathematics from the State University of Campinas, Brazil, and a PhD in Electrical Engineering (2000) from the same university.
Waldir Silva Soares Júnior is a Professor at the Federal Technological University of Paraná, Brazil. He holds Bachelor's (2004) and Master's degrees (2008) in Mathematics from the State University of Maringá, and a PhD in Mathematics (2017) from the same university.