Volume 51 (2020)
Dedicated to the 70th birthday of
Professor Antal Járai

Front pages
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Péter Burcsi
Laudation to Professor Antal Járai
on his seventieth birthday
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László Székelyhidi
Laudation to Professor Antal Járai
on his seventieth birthday
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Contunation of list of publications of Antal Járai
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Karol Baron
Around the weak limit of iterates of some
randomvalued functions
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Carlos M. da Fonseca and László Losonczi
On some pentadiagonal matrices:
their determinants and inverses
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JeanMarie De Koninck and Imre Kátai
Exponential sums running over
particular sets of positive integers
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Tamás Dózsa and Ferenc Schipp
Hyperbolic geometry and Blaschkefunctions
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Gábor Farkas, Gábor Gévay,
Péter Magyar and Béla Szekeres
Járai's prime hunting methods reloaded
(the largest known Cunningham chain of
length \(2\) of the \(2\)nd kind)
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Izabella Ingrid Farkas and Attila Kovács
Some results on simultaneous number systems
in the ring of integers of imaginary quadratic fields
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Żywilla Fechner and László Székelyhidi
Remarks on infinite hypergroup joins
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János Gonda
Homogeneous symmetric polynomiallike
Boolean functions
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Eszter Gselmann and Gergely Kiss
Remarks on the notion of homoderivations
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Péter LehotayKéry and Attila Kiss
Genome classification using overlap graph centralities
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Janusz Matkowski
Cauchy differences and means
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Zsolt Páles
On the essential union and intersection of families
of measurable sets
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Bui Minh Phong and Rita Betti Szeidl
On \(q\)multiplicative functions with special properties
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Gábor Román
Primality proofs with elliptic curves:
Heuristic on the expected number of curve orders
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Péter Simon
A note on the maximal function
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László Szili and Péter Vértesi
On barycentric interpolation. III.
(On convergent type processes)
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Marcell János Uray
On proving inequalities by cylindrical
algebraic decomposition
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Sage package

Le Manh Thanh, Nguyen Thi Uyen Nhi,
Nguyen Thi Uyen Thi,
Pham Thi Ai Han
and Van The Thanh
A semanticbased image retrieval system
using a hybrid
method Kmeans and Knearestneighbor
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Phan Hong Tin, Muhammet Tamer Koşan,
Truong Cong Quynh and Le Van Thuyet
Characterizations of \(QF\)rings in terms
of pseudo \(C^*\)injectivity
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Ioannis K. Argyros, Stepan Shakhno and
Halyna Yarmola
Extending the applicability of iterative methods
free of derivatives by means of memory
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Tomohiro Yamada
On Sinha's note on perfect numbers
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George A. Anastassiou
Abstract fractional Landau inequalities
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 Index of Volume 51
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Back pages
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