title: Recent theories and applications in approximation theory.
authors.affiliation: Department of Mathematics, Islamic Azad University, Zahedan Branch, Zahedan, Iran.
authors.forename: Fazlollah
authors.identifier: 0000-0002-6905-8951
authors.initials: F
authors.lastname: Soleymani
authors.affiliation: Faculty of Sciences and Mathematics, University of Niš, Visegradska 33, 18000 Niš, Serbia.
authors.forename: Predrag S
authors.initials: PS
authors.lastname: Stanimirović
authors.affiliation: Instituto de Matemáticas Multidisciplinar, Universitat Politècnica de València, 46022 Valencia, Spain.
authors.forename: Juan R
authors.identifier: 0000-0002-9893-0761
authors.initials: JR
authors.lastname: Torregrosa
authors.affiliation: Department of Applied Mathematics, School of Mathematical Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
authors.forename: Hassan Saberi
authors.initials: HS
authors.lastname: Nik
authors.affiliation: Department of Mathematics, Kosar University of Bojnord, P. O. Box 9415615458, Bojnord, Iran.
authors.forename: Emran
authors.initials: E
authors.lastname: Tohidi