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Analele ştiinţifice ale Universităţii "Ovidius" Constanţa. Seria Matematică

Volume 27 (2019): Issue 2 (June 2019)

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14 Articles
Open Access | Sep 26, 2019
Intersecting semi-disks and the synergy of three quadratic forms
Andrew D. Ionaşcu

Andrew D. Ionaşcu

Columbus High SchoolColumbus,
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Ionaşcu, Andrew D.
  
Open Access | Sep 26, 2019
On partial inverse operations in the class of preradicals of modules
Ion Jardan

Ion Jardan

Technical University of Moldova, Institute of Mathematics and Computer ScienceChişinău,
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Jardan, Ion
  
Open Access | Sep 26, 2019
Global invariants of paths and curves for the group of orthogonal transformations in the two-dimensional Euclidean space
Djavvat Khadjiev

Djavvat Khadjiev

Institute of Mathematics, Academy of Sciences of UzbekistanTashkent, Uzbekistan
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Khadjiev, Djavvat
 and 
İdris Ören

İdris Ören

Department of Mathematics, Karadeniz Technical UniversityTrabzon, Turkey
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Ören, İdris
  
Open Access | Sep 26, 2019
On elliptic curves with a closed component passing through a hexagon
Miroslav Kureš

Miroslav Kureš

Department of Mathematics, Brno University of TechnologyBrno,
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Kureš, Miroslav
  
Open Access | Sep 26, 2019
Steiner Degree Distance of Two Graph Products
Yaping Mao

Yaping Mao

Department of Mathematics, Qinghai Normal University, Center for Mathematics and Interdisciplinary Sciences of Qinghai ProvinceXining,
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Mao, Yaping
, 
Zhao Wang

Zhao Wang

School of Mathematical Sciences, Beijing Normal UniversityBeijing, China
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Wang, Zhao
 and 
Kinkar Ch. Das

Kinkar Ch. Das

Department of Mathematics, Sungkyunkwan UniversitySuwon,
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Das, Kinkar Ch.
  
Open Access | Sep 26, 2019
On a local version of Jack’s lemma
Mamoru Nunokawa

Mamoru Nunokawa

Chiba, Japan
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Nunokawa, Mamoru
 and 
Janusz Sokół

Janusz Sokół

Faculty of Mathematics and Natural Sciences, University of RzeszówRzeszów, Poland
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Sokół, Janusz
  
Open Access | Sep 26, 2019
Bipartite Graphs Associated with Pell, Mersenne and Perrin Numbers
Ahmet Öteleş

Ahmet Öteleş

Department of Mathematics, Faculty of Education, Dicle UniversityDiyarbakir, Turkey
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Öteleş, Ahmet
  
Open Access | Sep 26, 2019
Generalizations of Steffensen’s inequality via two-point Abel-Gontscharoff polynomial
Josip Pečarić

Josip Pečarić

Faculty of Textile Technology, University of Zagreb, RUDN UniversityZagreb,
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Pečarić, Josip
, 
Anamarija Perušić Pribanić

Anamarija Perušić Pribanić

Faculty of Civil Engineering, University of RijekaRijeka, Croatia
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Pribanić, Anamarija Perušić
 and 
Ksenija Smoljak Kalamir

Ksenija Smoljak Kalamir

Faculty of Textile Technology, University of ZagrebZagreb, Croatia
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Kalamir, Ksenija Smoljak
  
Open Access | Sep 26, 2019
On some products in pro-categories and shape categories
I. Pop

I. Pop

Faculty of Mathematics “Al.I.Cuza” UniversityIaşi, Romania
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Pop, I.
  
Open Access | Sep 26, 2019
Characterizations of Generalized Exponential Trichotomies for Linear Discrete-time Systems
Ioan-Lucian Popa

Ioan-Lucian Popa

Department of Exact Science and Engineering, “1 Decembrie 1918” University of Alba IuliaAlba Iulia, Romania
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Popa, Ioan-Lucian
, 
Traian Ceauşu

Traian Ceauşu

Department of Mathematics, West University of TimişoaraTimişoara, Romania
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Ceauşu, Traian
, 
Ovidiu Bagdasar

Ovidiu Bagdasar

School of Computing and Mathematics, University of DerbyDerby,
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Bagdasar, Ovidiu
 and 
Ravi P. Agarwal

Ravi P. Agarwal

Department of Mathematics, Texas A&M University-KingsvilleKingsville,
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Agarwal, Ravi P.
  
Open Access | Sep 26, 2019
Second Hankel determinant for a class of analytic functions defined by q-derivative operator
Dorina Răducanu

Dorina Răducanu

Faculty of Mathematics and Computer Science, Transilvania University of BraşovBraşov, Romania
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Răducanu, Dorina
  
Open Access | Sep 26, 2019
Estimates of the Laplacian Spectrum and Bounds of Topological Invariants for Riemannian Manifolds with Boundary
Luca Sabatini

Luca Sabatini

Dipartminto di Scienze di Base ed Applicate per l’Ingegneria, Università degli Studi di Roma La SapienzaRoma,
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Sabatini, Luca
  
Open Access | Sep 26, 2019
Cubic Intuitionistic Structures Applied to Ideals of BCI-Algebras
Tapan Senapati

Tapan Senapati

Department of Applied Mathematics with Oceanology and Computer Programming, Vidyasagar UniversityMidnapore, India
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Senapati, Tapan
, 
Young Bae Jun

Young Bae Jun

Department of Mathematics Education, Gyeongsang National UniversityJinju,
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Jun, Young Bae
, 
G. Muhiuddin

G. Muhiuddin

Department of Mathematics, University of TabukTabuk, Saudi Arabia
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Muhiuddin, G.
 and 
K. P. Shum

K. P. Shum

Institute of Mathematics, Yunnan UniversityKunming,
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Shum, K. P.
  
Open Access | Sep 26, 2019
Vanishing Ideals Over Odd Cycles
M. Eduardo Uribe-Paczka

M. Eduardo Uribe-Paczka

Department of Mathematics, Escuela Superior de Física y Matemáticas, Instituto Politécnico NacionalMexico City,
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Uribe-Paczka, M. Eduardo
, 
Eliseo Sarmiento

Eliseo Sarmiento

Department of Mathematics, Escuela Superior de Física y Matemáticas, Instituto Politécnico NacionalMexico City,
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Sarmiento, Eliseo
 and 
Carlos Rentería Márquez

Carlos Rentería Márquez

Department of Mathematics, Escuela Superior de Física y Matemáticas, Instituto Politécnico NacionalMexico City,
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Márquez, Carlos Rentería
  

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Mathematics, General Mathematics
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