1. A note on the four color theorem

   • Jennifer Canizales
   • Jasbir S. Chahal

   OriginalPaper 17 December 2022 Pages: 1 - 11

   

2. On graceful antimagic graphs

   • Mohammed Ali Ahmed
   • Andrea Semaničová-Feňovčíková
   • Loganathan Shobana

   OriginalPaper 08 December 2022 Pages: 13 - 30

   

3. On s-Stirling transform and poly-Cauchy numbers of the second kind with level 2

   • Takao Komatsu

   OriginalPaper 11 December 2022 Pages: 31 - 61

4. Partitions associated to class groups of imaginary quadratic number fields

   • Kathleen L. Petersen
   • James A. Sellers

   OriginalPaper 09 July 2022 Pages: 63 - 74

5. Refinements of Jensen’s inequality by uniformly convex functions

   • Shoshana Abramovich

   OriginalPaper 14 November 2022 Pages: 75 - 88

6. On even orthogonally additive mappings in orthogonality spaces

   • Adolf Schleiermacher
   • Justyna Sikorska

   OriginalPaper 03 July 2022 Pages: 89 - 111

7. An alternative equation for generalized monomials

   • Zoltán Boros
   • Rayene Menzer

   OriginalPaper Open access 28 October 2022 Pages: 113 - 120

8. Translativity of beta-type functions

   • Tomasz Małolepszy
   • Janusz Matkowski

   OriginalPaper Open access 22 August 2022 Pages: 121 - 132

9. On distributional spectrum of piecewise monotonic maps

   • Jan Tesarčík
   • Vojtěch Pravec

   OriginalPaper 16 September 2022 Pages: 133 - 145

   

10. On isosceles orthogonality and some geometric constants in a normed space

    • Debmalya Sain
    • Souvik Ghosh
    • Kallol Paul

    OriginalPaper 01 September 2022 Pages: 147 - 160

11. Line conjugates in the plane of a triangle

    • Clark Kimberling
    • Peter J. C. Moses

    OriginalPaper 12 August 2022 Pages: 161 - 184

    

12. A two-vertex theorem for normal tilings

    • Gábor Domokos
    • Ákos G. Horváth
    • Krisztina Regős

    OriginalPaper Open access 03 June 2022 Pages: 185 - 197

    

13. On measure of noncompactness in Lebesgue and Sobolev spaces with an application to the functional integro-differential equation

    • M. Mursaleen
    • S. M. H. Rizvi
    • R. Allahyari

    OriginalPaper 11 August 2022 Pages: 199 - 217