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Analele ştiinţifice ale Universităţii "Ovidius" Constanţa. Seria Matematică

Volume 28 (2020): Issue 2 (July 2020)

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15 Articles
Open Access | Sep 22, 2020
Langevin equation in terms of conformable differential operators
Bashir Ahmad

Bashir Ahmad

Nonlinear Analysis and Applied Mathematics (NAAM)-Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz UniversityJeddah, Saudi Arabia
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Ahmad, Bashir
, 
Ravi P. Agarwal

Ravi P. Agarwal

Department of Mathematics, Texas A& M UniversityKingsville,
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Agarwal, Ravi P.
, 
Madeaha Alghanmi

Madeaha Alghanmi

Nonlinear Analysis and Applied Mathematics (NAAM)-Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz UniversityJeddah, Saudi Arabia
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Alghanmi, Madeaha
 and 
Ahmed Alsaedi

Ahmed Alsaedi

Nonlinear Analysis and Applied Mathematics (NAAM)-Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz UniversityJeddah, Saudi Arabia
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Alsaedi, Ahmed
  
Open Access | Sep 22, 2020
On Constraint Manifolds of Lorentz Sphere
Buşra Aktaş

Buşra Aktaş

Department of Mathematics, Faculty of Science and Arts, University of KırıkkaleKırıkkale, Turkey
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Aktaş, Buşra
, 
Olgun Durmaz

Olgun Durmaz

Department of Mathematics, Faculty of Science, University of Atatürk 25240-YakutiyeErzurum, Turkey
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Durmaz, Olgun
 and 
Hal˙t Gündoğan

Hal˙t Gündoğan

Department of Mathematics, Faculty of Science and Arts, University of KırıkkaleKırıkkale, Turkey
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Gündoğan, Hal˙t
  
Open Access | Sep 22, 2020
A generalization of Kruskal–Katona’s theorem
Luca Amata

Luca Amata

Department of Mathematics and Computer Sciences, Physics and Earth Sciences, University of MessinaMessina, Italy
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Amata, Luca
 and 
Marilena Crupi

Marilena Crupi

Department of Mathematics and Computer Sciences, Physics and Earth Sciences, University of MessinaMessina, Italy
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Crupi, Marilena
  
Open Access | Sep 22, 2020
Iterative Solution of Weighted Linear Least Squares Problems
Doina Carp

Doina Carp

Politehnica UniversityBucharest, Romania
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Carp, Doina
, 
Constantin Popa

Constantin Popa

  • Ovidius University of ConstantaConstanta, Romania
  • “Gheorghe Mihoc - Caius Iacob” Institute of Statistical Mathematics and Applied Mathematics, Academy of Romanian SceintistsBucharest,
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Popa, Constantin
, 
Tobias Preclik

Tobias Preclik

Friedrich-Alexander University of Erlangen-NurnbergErlangen, Germany
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Preclik, Tobias
 and 
Ulrich Rüde

Ulrich Rüde

Friedrich-Alexander University of Erlangen-NurnbergErlangen, Germany
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Rüde, Ulrich
  
Open Access | Sep 22, 2020
Constacyclic codes over finite local Frobenius non-chain rings of length 5 and nilpotency index 4
C. A. Castillo-Guillén

C. A. Castillo-Guillén

Department of Mathematics, Universidades para el Bienestar Benito Juárez García
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Castillo-Guillén, C. A.
 and 
C. Rentería-Márquez

C. Rentería-Márquez

Department of Mathematics, Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Instituto Politécnico Nacional Ave s/n, 07300
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Rentería-Márquez, C.
  
Open Access | Sep 22, 2020
Constructive Approach of the Solution of Riemann Problem for Shallow Water Equations with Topography and Vegetation
Stelian Ion

Stelian Ion

“Gheorghe Mihoc-Caius Iacob” Institute of Statistical Mathematics and Applied Mathematics, Romanian AcademyBucharest, Romania
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Ion, Stelian
, 
Stefan-Gicu Cruceanu

Stefan-Gicu Cruceanu

“Gheorghe Mihoc-Caius Iacob” Institute of Statistical Mathematics and Applied Mathematics, Romanian AcademyBucharest, Romania
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Cruceanu, Stefan-Gicu
 and 
Dorin Marinescu

Dorin Marinescu

“Gheorghe Mihoc-Caius Iacob” Institute of Statistical Mathematics and Applied Mathematics, Romanian AcademyBucharest, Romania
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Marinescu, Dorin
  
Open Access | Sep 22, 2020
σ-derivations on generalized matrix algebras
Aisha Jabeen

Aisha Jabeen

Department of Applied Sciences & Humanities, Jamia Millia Islamia (A Central University)New Delhi, India
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Jabeen, Aisha
, 
Mohammad Ashraf

Mohammad Ashraf

Department of Mathematics, Aligarh Muslim UniversityAligarh, India
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Ashraf, Mohammad
 and 
Musheer Ahmad

Musheer Ahmad

Department of Applied Sciences & Humanities, Jamia Millia Islamia (A Central University)New Delhi, India
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Ahmad, Musheer
  
Open Access | Sep 22, 2020
The Variation of the Salt Concentration at the Discharge of a River into a Saline Water
Gheorghe Juncu

Gheorghe Juncu

Politehnica University Bucharest, Department of Chemical and Biochemical EngineeringBucharest, Romania
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Juncu, Gheorghe
, 
Aurelian Nicola

Aurelian Nicola

Ovidius University of Constanta, Faculty of Mathematics and InformaticsConstanta, Romania
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Nicola, Aurelian
 and 
Elena Stroilă Curcă

Elena Stroilă Curcă

Research Center for NavyConstanta, Romania
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Curcă, Elena Stroilă
  
Open Access | Sep 22, 2020
A note on adaptivity in factorized approximate inverse preconditioning
Jiří Kopal

Jiří Kopal

Technical University of Liberec, Institute of Novel Technologies and Applied InformaticsLiberec,
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Kopal, Jiří
, 
Miroslav Rozložník

Miroslav Rozložník

Institute of Computer Science, Academy of Sciences of the Czech RepublicPrague 8,
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Rozložník, Miroslav
 and 
Miroslav Tůma

Miroslav Tůma

Faculty of Mathematics and Physics, Charles University in PraguePraha 8,
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Tůma, Miroslav
  
Open Access | Sep 22, 2020
Lifetime Distributions and their Approximation in Reliability of Serial/Parallel Networks
Alexei Leahu

Alexei Leahu

Technical University of Moldova
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Leahu, Alexei
 and 
Veronica Andrievschi-Bagrin

Veronica Andrievschi-Bagrin

Technical University of Moldova
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Andrievschi-Bagrin, Veronica
  
Open Access | Sep 22, 2020
Fitzpatrick transform of monotone relations in Hadamard spaces
A. Moslemipour

A. Moslemipour

Department of Mathematics, Science and Research Branch, Islamic Azad UniversityTehran,
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Moslemipour, A.
, 
M. Roohi

M. Roohi

Department of Mathematics, Faculty of Sciences, Golestan UniversityGorgan,
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Roohi, M.
, 
M. R. Mardanbeigi

M. R. Mardanbeigi

Department of Mathematics, Science and Research Branch, Islamic Azad UniversityTehran,
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Mardanbeigi, M. R.
 and 
M. Azhini

M. Azhini

Department of Mathematics, Science and Research Branch, Islamic Azad UniversityTehran,
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Azhini, M.
  
Open Access | Sep 22, 2020
On a free boundary value problem for the anisotropic N-Laplace operator on an N−dimensional ring domain
A. E. Nicolescu

A. E. Nicolescu

Doctoral School of Mathematics, Ovidius University of ConstantaConstanta, Romania
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Nicolescu, A. E.
 and 
S. Vlase

S. Vlase

Department of Mechanical Engineering, Transilvania University of BrasovBrasov, Romania
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Vlase, S.
  
Open Access | Sep 22, 2020
Congruences of Sheffer stroke basic algebras
Ibrahim Senturk

Ibrahim Senturk

Department of Mathematics, Faculty of Sciences, Ege UniversityIzmir, Turkey
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Senturk, Ibrahim
, 
Tahsin Oner

Tahsin Oner

Department of Mathematics, Faculty of Sciences, Ege UniversityIzmir, Turkey
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Oner, Tahsin
 and 
Arsham Borumand Saeid

Arsham Borumand Saeid

Department of Pure Mathematics, Faculty of Mathematics and Computer, Shahid Bahonar University of KermanKerman,
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Saeid, Arsham Borumand
  
Open Access | Sep 22, 2020
On some mean value theorem via covering argument
Dariusz Sokołowski

Dariusz Sokołowski

Institute of Mathematics, University of SilesiaKatowice, Poland
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Sokołowski, Dariusz
  
Open Access | Sep 22, 2020
On S-2-absorbing submodules and vn-regular modules
Gülşen Ulucak

Gülşen Ulucak

Department of Mathematics, Gebze Technical UniversityKocaeli, Turkey
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Ulucak, Gülşen
, 
Ünsal Tekir

Ünsal Tekir

Department of Mathematics, Marmara UniversityIstanbul, Turkey
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Tekir, Ünsal
 and 
Suat Koç

Suat Koç

Department of Mathematics, Marmara UniversityIstanbul, Turkey
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Koç, Suat
  

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Journal Subjects:
Mathematics, General Mathematics
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