1. On principal congruences and the number of congruences of a lattice with more ideals than filters

   • Gábor Czédli
   • Claudia Mureşan

   Algebra 01 December 2019 Pages: 363 - 380

2. E-solid locally inverse semigroups

   • Tamás Dékány
   • Mária B. Szendrei
   • István Szittyai

   Algebra 01 December 2019 Pages: 381 - 411

3. Power integral bases in cubic and quartic extensions of real quadratic fields

   • István Gaál
   • László Remete

   Algebra 01 December 2019 Pages: 413 - 429

4. Functional equations characterizing σ-derivations

   • Amin Hosseini
   • Mehdi Mohammadzadeh Karizaki

   Algebra 01 December 2019 Pages: 431 - 440

5. A subclass of boundary measures and the convex combination problem for Herglotz–Nevanlinna functions in several variables

   • Mitja Nedic

   Analysis 01 December 2019 Pages: 441 - 472

6. Toeplitz type operators on the derivative Hardy space S²(ⅅ)

   • Anuradha Gupta
   • Shivam Kumar Singh

   Analysis 01 December 2019 Pages: 473 - 493

7. Geometry of spaces of compact operators

   • T. S. S. R. K. Rao

   Analysis 01 December 2019 Pages: 495 - 505

8. Real normal operators and Williamson’s normal form

   • B. V. Rajarama Bhat
   • Tiju Cherian John

   Analysis 01 December 2019 Pages: 507 - 518

9. Relative position of three subspaces in a Hilbert space

   • Masatoshi Enomoto
   • Yasuo Watatani

   Analysis 01 December 2019 Pages: 519 - 537

10. Spectra of composition operators on weighted Bergman spaces

    • Matthew A. Pons

    Analysis 01 December 2019 Pages: 539 - 560

11. Composition operators similar to contractions

    • Valentin Matache

    Analysis 01 December 2019 Pages: 561 - 571

12. Invertibility of functions of operators and existence of hyperinvariant subspaces

    • Maria F. Gamal’

    Analysis 01 December 2019 Pages: 573 - 588

13. Essential spherical isometries

    • Sameer Chavan

    Analysis 01 December 2019 Pages: 589 - 594

14. Distributional boundary values of generalized Hardy functions in Beurling’s tempered distributions

    • Byung Keun Sohn

    Analysis 01 December 2019 Pages: 595 - 611

15. Isometries on certain non-complete vector-valued function spaces

    • Mojtaba Mojahedi
    • Fereshteh Sady

    Analysis 01 December 2019 Pages: 613 - 627

16. Chebyshev polynomials on circular arcs

    • Klaus Schiefermayr

    Analysis 01 December 2019 Pages: 629 - 649

17. On the triviality of domains of powers and adjoints of closed operators

    • Mohammed Hichem Mortad

    Analysis 01 December 2019 Pages: 651 - 658

18. CM-ideals and L¹-matricial split faces

    • Anindya Ghatak
    • Anil Kumar Karn

    Analysis 01 December 2019 Pages: 659 - 679

19. Generalizations of the relation of quasisimilarity for operators

    • H. Bercovici
    • I. B. Jung
    • C. Pearcy

    Analysis 01 December 2019 Pages: 681 - 691

20. Inequalities between fixed energy phase shifts II

    • Miklós Horváth
    • Orsolya Sáfár

    Analysis 01 December 2019 Pages: 693 - 708