Vol. 21 (2022)

Published

• Editorial

  Paweł Wójcik

  5

• An extensive note on various fractional-order type operators and some of their effects to certain holomorphic functions

  Hüseyin Irmak

  7-15

  • PDF

• Compactness of quadruple band matrix operator and geometric properties

  Mustafa Cemil Bişgin, Abdulcabbar Sönmez

  17-32

  • PDF

• γμH-compactness in GTS

  Takashi Noiri, Bishwambhar Roy

  33-42

  • PDF

• On Traczyk’s BCK-sequences

  Denis Zelent

  43-49

  • PDF

• A simpler method to get only the true solutions of cubic and quartic equations using Tschirnhaus transformation

  Raghavendra G. Kulkarni

  51-56

  • PDF

• Solution to algebraic equations of degree~4 and the fundamental theorem of algebra by Carl Friedrich Gauss

  Norbert Südland, Jörg Volkmann, Dinesh Kumar

  57-70

  • PDF

• On a certain characterisation of the semigroup of positive natural numbers with multiplication

  Edward Tutaj

  71-92

  • PDF

• Deductive systems of pseudo-M algebras

  Andrzej Walendziak

  93-116

  • PDF