Volume 51 (2020)

Dedicated to the 70th birthday of Professor
Antal Járai

Front pages

Pages: 1-3

Laudation to Professor Antal Járai on his seventieth birthday

Péter Burcsi

Pages: 5–17

DOI: 10.71352/ac.51.005

Laudation to Professor Antal Járai on his seventieth birthday

László Székelyhidi

Pages: 19–26

DOI: 10.71352/ac.51.019

Continuation of list of publications of Antal Járai

Pages: 27–29

DOI: 10.71352/ac.51.027

Around the weak limit of iterates of some random-valued functions

Karol Baron

Pages: 31–37

DOI: 10.71352/ac.51.031

On some pentadiagonal matrices: their determinants and inverses

Carlos M. da Fonseca and László Losonczi

Pages: 39–50

DOI: 10.71352/ac.51.039

Exponential sums running over particular sets of positive integers

Jean-Marie De Koninck and Imre Kátai

Pages: 51–57

DOI: 10.71352/ac.51.051

Hyperbolic geometry and Blaschke-functions

Tamás Dózsa and Ferenc Schipp

Pages: 59–68

DOI: 10.71352/ac.51.059

Járai's prime hunting methods reloaded (the largest known Cunningham chain of length \(2\) of the \(2\)nd kind)

Gábor Farkas, Gábor Gévay, Péter Magyar and Béla Szekeres

Pages: 69–75

DOI: 10.71352/ac.51.069

Some results on simultaneous number systems in the ring of integers of imaginary quadratic fields

Izabella Ingrid Farkas and Attila Kovács

Pages: 77–88

DOI: 10.71352/ac.51.077

Remarks on infinite hypergroup joins

Żywilla Fechner and László Székelyhidi

Pages: 89–95

DOI: 10.71352/ac.51.089

Homogeneous symmetric polynomial-like Boolean functions

János Gonda

Pages: 97–110

DOI: 10.71352/ac.51.097

Remarks on the notion of homo-derivations

Eszter Gselmann and Gergely Kiss

Pages: 111–130

DOI: 10.71352/ac.51.111

Genome classification using overlap graph centralities

Péter Lehotay–Kéry and Attila Kiss

Pages: 131–146

DOI: 10.71352/ac.51.131

Cauchy differences and means

Janusz Matkowski

Pages: 147–172

DOI: 10.71352/ac.51.147

On the essential union and intersection of families of measurable sets

Zsolt Páles

Pages: 173–177

DOI: 10.71352/ac.51.173

On \(q\)-multiplicative functions with special properties

Bui Minh Phong and Rita Betti Szeidl

Pages: 179–190

DOI: 10.71352/ac.51.179

Primality proofs with elliptic curves: Heuristic on the expected number of curve orders

Gábor Román

Pages: 191–198

DOI: 10.71352/ac.51.191

A note on the maximal function

Péter Simon

Pages: 199–215

DOI: 10.71352/ac.51.199

On barycentric interpolation. III. (On convergent type processes)

László Szili and Péter Vértesi

Pages: 217–230

DOI: 10.71352/ac.51.217

On proving inequalities by cylindrical algebraic decomposition

Marcell János Uray

Pages: 231–252

DOI: 10.71352/ac.51.231

A semantic-based image retrieval system using a hybrid method K-means and K-nearest-neighbor

Le Manh Thanh, Nguyen Thi Uyen Nhi, Nguyen Thi Uyen Thi, Pham Thi Ai Han and Van The Thanh

Pages: 253–274

DOI: 10.71352/ac.51.253

Characterizations of \(QF\)-rings in terms of pseudo \(C^*\)-injectivity

Phan Hong Tin, Muhammet Tamer Koşan, Truong Cong Quynh and Le Van Thuyet

Pages: 275–288

DOI: 10.71352/ac.51.275

Extending the applicability of iterative methods free of derivatives by means of memory

Ioannis K. Argyros, Stepan Shakhno and Halyna Yarmola

Pages: 289–300

DOI: 10.71352/ac.51.289

On Sinha's note on perfect numbers

Tomohiro Yamada

Pages: 301–308

DOI: 10.71352/ac.51.301

Abstract fractional Landau inequalities

George A. Anastassiou

Pages: 309–326

DOI: 10.71352/ac.51.309

Index of Volume 51

Pages: 327–328

Back pages

Pages: 329–330

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