1. Alienation of the Quadratic and Additive Functional Equations

   • M. Adam

   OriginalPaper 29 April 2019 Pages: 449 - 460

2. Johnson Pseudo-Contractibility of Certain Banach Algebras and Their Nilpotent Ideals

   • M. Askari-Sayah
   • A. Pourabbas
   • A. Sahami

   OriginalPaper 29 April 2019 Pages: 461 - 473

3. Sets of Sums of a Series Depending on Sign Distributions

   • M. Banakiewicz

   OriginalPaper 29 April 2019 Pages: 475 - 490

4. Moduli of Smoothness and K-Functional in L₂(ℝ _q ⁺ )-Space with Power Weight

   • S. El Ouadih
   • R. Daher
   • M. El Hamma

   OriginalPaper 29 April 2019 Pages: 491 - 503

5. Weak-Type (1, 1) Estimates for Strongly Singular Operators

   • M. Folch-Gabayet
   • R. A. Sáenz

   OriginalPaper 29 April 2019 Pages: 505 - 514

6. An Inequality in Weighted Campanato Spaces with Applications

   • X. Hu
   • J. Zhou

   OriginalPaper 29 April 2019 Pages: 515 - 526

7. A New Estimation for Eigenvalues of Matrix Power Functions

   • M. Kian
   • M. Bakherad

   OriginalPaper 29 April 2019 Pages: 527 - 534

8. On the Maximal Directional Hilbert Transform

   • I. Łaba
   • A. Marinelli
   • M. Pramanik

   OriginalPaper 29 April 2019 Pages: 535 - 568

9. Non-Linear Complex Differentialdifference Equations Admit Meromorphic Solutions

   • K. Liu
   • C. J. Song

   OriginalPaper 29 April 2019 Pages: 569 - 582

10. On (p, q)-Appell Polynomials

    • P. Njionou Sadjang

    OriginalPaper 29 April 2019 Pages: 583 - 598

11. On the Compactness of Commutators of Hardy–Littlewood Maximal Operator

    • D.-H. Wang
    • J. Zhou
    • Z.-D. Teng

    OriginalPaper 29 April 2019 Pages: 599 - 619

12. Exact Constants for Simultaneous Approximation of Sobolev Classes by Piecewise Hermite Interpolation

    • G. Q. Xu
    • Y. P. Liu
    • L. Y. Xiong

    OriginalPaper 29 April 2019 Pages: 621 - 645