Subjects -> MATHEMATICS (Total: 1013 journals)
    - APPLIED MATHEMATICS (92 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (714 journals)
    - MATHEMATICS (GENERAL) (45 journals)
    - NUMERICAL ANALYSIS (26 journals)
    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (714 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 3)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 4)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 13)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 5)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 43)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 2)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 3)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 5)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 9)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 7)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 16)
Advances in Decision Sciences     Open Access   (Followers: 4)
Advances in Difference Equations     Open Access   (Followers: 3)
Advances in Fixed Point Theory     Open Access  
Advances in Geosciences (ADGEO)     Open Access   (Followers: 20)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 6)
Advances in Materials Science     Open Access   (Followers: 21)
Advances in Mathematical Physics     Open Access   (Followers: 6)
Advances in Mathematics     Full-text available via subscription   (Followers: 18)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal  
Advances in Pure Mathematics     Open Access   (Followers: 10)
Advances in Science and Research (ASR)     Open Access   (Followers: 9)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 8)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 5)
Afrika Matematika     Hybrid Journal   (Followers: 2)
Air, Soil & Water Research     Open Access   (Followers: 6)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 3)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 4)
Algebra and Logic     Hybrid Journal   (Followers: 9)
Algebra Colloquium     Hybrid Journal   (Followers: 3)
Algebra Universalis     Hybrid Journal   (Followers: 3)
Algorithmic Operations Research     Open Access   (Followers: 6)
Algorithms     Open Access   (Followers: 14)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical Analysis     Open Access   (Followers: 1)
American Journal of Mathematical and Management Sciences     Hybrid Journal  
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 6)
American Mathematical Monthly     Full-text available via subscription   (Followers: 3)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 12)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 2)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 7)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 3)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Data Science     Hybrid Journal   (Followers: 15)
Annals of Functional Analysis     Hybrid Journal   (Followers: 2)
Annals of Mathematics     Full-text available via subscription   (Followers: 5)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 13)
Annals of PDE     Hybrid Journal  
Annals of Pure and Applied Logic     Open Access   (Followers: 5)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access   (Followers: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access   (Followers: 1)
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 2)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 16)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 7)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 1)
Applied Mathematics Letters     Full-text available via subscription   (Followers: 3)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 4)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Armenian Journal of Mathematics     Open Access  
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 21)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Research Journal of Mathematics     Open Access  
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 2)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 2)
Banach Journal of Mathematical Analysis     Hybrid Journal  
Basin Research     Hybrid Journal   (Followers: 6)
BIBECHANA     Open Access  
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription  
British Journal for the History of Mathematics     Hybrid Journal   (Followers: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 18)
British Journal of Mathematics & Computer Science     Full-text available via subscription   (Followers: 1)
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 2)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 3)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 4)
Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics     Open Access  
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Cadernos do IME : Série Matemática     Open Access  
Calculus of Variations and Partial Differential Equations     Hybrid Journal   (Followers: 1)
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access  
Catalysis in Industry     Hybrid Journal  
CAUCHY     Open Access   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 5)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 1)
Chaos, Solitons & Fractals : X     Open Access   (Followers: 1)
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Ciencia     Open Access  
CODEE Journal     Open Access  
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 5)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 20)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 3)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 6)
Complex Analysis and its Synergies     Open Access   (Followers: 1)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Compositio Mathematica     Full-text available via subscription   (Followers: 2)
Comptes Rendus : Mathematique     Open Access  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 3)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 5)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 11)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 9)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 10)
Confluentes Mathematici     Hybrid Journal  
Constructive Mathematical Analysis     Open Access  
Contributions to Discrete Mathematics     Open Access  
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal   (Followers: 1)
Cross Section     Full-text available via subscription   (Followers: 1)
Cryptography and Communications     Hybrid Journal   (Followers: 11)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal  
Daya Matematis : Jurnal Inovasi Pendidikan Matematika     Open Access  
Demographic Research     Open Access   (Followers: 14)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 35)
Desimal : Jurnal Matematika     Open Access  
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 2)
Differentsial'nye Uravneniya     Open Access  
Digital Experiences in Mathematics Education     Hybrid Journal   (Followers: 3)
Discrete Mathematics     Hybrid Journal   (Followers: 7)
Discrete Mathematics & Theoretical Computer Science     Open Access   (Followers: 1)
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae - General Algebra and Applications     Open Access  
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Diskretnaya Matematika     Full-text available via subscription  
Doklady Akademii Nauk     Open Access  

        1 2 3 4 | Last

Similar Journals
Journal Cover
Afrika Matematika
Journal Prestige (SJR): 0.235
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1012-9405 - ISSN (Online) 2190-7668
Published by Springer-Verlag Homepage  [2467 journals]
  • Sufficient conditions for Janowski starlike functions with fixed second
           coefficient

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      Abstract: Abstract Let \(A, B, D, E \in [-1,1]\) and let p(z) be an analytic function with fixed initial coefficient defined in the open unit disk. Conditions on A, B, D,  and E are determined so that \(1+ \alpha z p'(z)\) being subordinated to \((1+Dz)/(1+Ez)\) implies that p(z) is subordinated to \((1+Az)/(1+Bz)\) and other similar implications involving \(1+ \alpha z p'(z)/p(z)\) , \(\alpha p^2(z) + \lambda z p'(z) \) , \( \alpha p(z) + (1-\alpha ) p^2(z) + \lambda z p'(z)\) , and \( (1-\alpha ) p(z) + \alpha \left( 1+ z p'(z)/p(z) \right) \) . Also, sufficient conditions for Janowski starlikeness with fixed second coefficient are obtained.
      PubDate: 2022-11-25
       
  • Bianchi type strange quark cosmological models in a modified theory of
           gravity

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      Abstract: Abstract In this article, we analyze Bianchi type-II, VIII and IX spatially homogeneous and anisotropic space–times in the background of f(R) theory of gravity with a strange quark matter attached to a string cloud. Here, both in the presence and absence of cosmic strings, we have achieved the deterministic solution of the field equations. To solve the field equations we use (i) the shear scalar \(\sigma \) is proportional to the expansion scalar \(\vartheta \) which leads to a relation between metric potentials (ii) a power–law relation between the scalar function F(R) of the theory and average scale factor a(t) of the Universe and (iii) a special form of the average scale factor obtain from the time-varying deceleration parameter. Furthermore, all the models obtained and presented here are expanding and accelerating. Also, we have discussed some of the dynamical parameters of obtained models through graphical representation which is significant in the discussion of modern cosmology.
      PubDate: 2022-11-15
       
  • Pythagorean fuzzy soft RMS approach to decision making and medical
           diagnosis

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      Abstract: Abstract In this paper, we propose the idea of a root-mean-square-threshold or RMS-threshold for the Pythagorean fuzzy soft set (PFSS). In light of this new concept, we characterized the RMS-level soft set in order to provide additional rationale for decision-making using Pythagorean fuzzy soft information. Moreover, we propose the concept of a weighted Pythagorean fuzzy soft set (WPFSS) with two-tuple weights and talk about its utility for decision-making issues. We initially stretch out the RMS approach to diagnosing numerous patients with different diseases with WPFSS data.
      PubDate: 2022-11-11
       
  • Biwarped product submanifolds in some structures of metallic Riemannian
           manifold

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      Abstract: Abstract In this paper, we study the biwarped product submanifold in locally nearly metallic Riemannian manifold. We construct a non trivial example of a biwarped product submanifold in metallic Riemannian manifold. Moreover, we discuss a necessary and sufficient condition for such submanifolds to be locally trivial. Finally, we set up an inequality in locally nearly metallic Riemannian manifold for the second fundamental form with respect to some conditions. We also investigate the equality case.
      PubDate: 2022-10-26
       
  • Characterization of Einstein Poisson warped product space

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      Abstract: Abstract In this article, we study the problem of the existence and nonexistence of warping function associated with constant scalar curvature on pseudo-Riemannian Poisson warped product space under the assumption that fiber space has constant scalar curvature. We characterize the warping function on Einstein Poisson warped space by taking the various dimensions of base space B (i.e; (1). \(dim B=1,\) (2). \(dimB\ge 2\) ).
      PubDate: 2022-09-20
       
  • An upper-diagonal bivariate epsilon distribution with application in
           agriculture

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      Abstract: Abstract A new bivariate distribution that has the potential to describe simultaneous occurrences of random processes with outcomes of the form \(\left(x,y\right)\) , where \(x<y\) is derived. It is a five-parameter upper-diagonal bivariate epsilon distribution for modeling ordered random variables. The shapes of the density and contour plots show the new distribution possesses the potential for modeling simultaneous random variables such as minimum and maximum temperatures, systolic and diastolic blood pressures, weight of mothers and babies at birth, length and breadth of oval shapes. Its properties, such as conditional distributions, univariate marginal distributions and the extreme-value distributions are derived. It is generalized in a multivariate form. It is applied to minimum and maximum temperatures data from Yola. The parameter estimates provides good fit. The conditional expectation of the maximum temperature requirements for 13 crops to thrive in Yola are estimated using these parameter values. The conditioning is taken over minimum temperature for these crops to grow in the Sahel region. For most of these crops, the values obtained are outside the optimal temperature range for growth and yield performance. This portends discouragement in farming and investment in agriculture. It is therefore suggested that more research efforts should be geared towards improved seedling for these crops. This will enhance earnings of African peasant farmers and guarantee food security.
      PubDate: 2022-09-16
       
  • Existence of infinitely many positive radial solutions for an iterative
           system of nonlinear elliptic equations on an exterior domain

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      Abstract: Abstract In this paper by an application of Krasnoselskii’s fixed point theorem, we establish the existence of infinitely many positive radial solutions to the iterative system of nonlinear elliptic equations of the form $$\begin{aligned} \begin{aligned}&\varDelta { v_{\mathtt {j}}}+\frac{(N-2)^2r_0^{2N-2}}{\vert \mathtt {x}\vert ^{2N-2}}v_\mathtt {j}+\mathtt {Q}(\vert \mathtt {x}\vert )\mathtt {g}_{\mathtt {j}}( v_{\mathtt {j}+1})=0,~~\mathtt {x}\in \varOmega ,\\&\quad v_{\mathtt {j}}\vert _{\partial \varOmega }=0,~ \lim _{\vert \mathtt {x}\vert \rightarrow \infty }v_{\mathtt {j}}(\mathtt {x})=0, \end{aligned} \end{aligned}$$ where \(\mathtt {j}\in \{1,2,3,\ldots ,m\},\) \( v_1= v_{m+1},\) \(\varDelta v=\mathtt {div}(\nabla v),\) \(N>2,\) \(0<r_0<\pi /2,\) \(\varOmega =\{ v\in \mathbb {R}^N ~\vert v\vert >r_0\},\) \(\mathtt {Q}=\prod _{i=1}^{n}\mathtt {Q}_i,\) each \(\mathtt {Q}_i:(r_0,+\infty )\rightarrow (0,+\infty )\) is continuous, \(r^{N-1}\mathtt {Q}\) is integrable, may have singularities, and \(\mathtt {g}_\mathtt {j}:[0,+\infty )\rightarrow \mathbb {R}\) is continuous.
      PubDate: 2022-09-13
      DOI: 10.1007/s13370-022-01027-3
       
  • Lattice structures in ternary semigroup of mappings

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      Abstract: Abstract In this paper we present a construction for partial order in T[X, Y] which is called the ternary semigroup of mappings, derived from the partial orders defined in X and Y. Mainly we study various lattice structures in T[X, Y]. The last section deals with the lattice isomorphism problems and the notion of partially ordered ternary semigroup in T[X, Y].
      PubDate: 2022-09-07
      DOI: 10.1007/s13370-022-01028-2
       
  • Infinitely many positive solutions for an iterative system of fractional
           BVPs with multistrip Riemann–Stieltjes integral boundary conditions

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      Abstract: In this paper, the existence of infinitely many positive solutions for an iterative system of singular fractional order boundary value problems having increasing homeomorphism and positive homomorphism operator (IHPHO) with Rieman–Stieltjes integral boundary conditions are discussed. The arguments are discussed via Hölder’s inequality and Krasnoselskii’s cone fixed point theorem in a Banach space. Finally, some examples are included to ensure the abstract results.
      PubDate: 2022-09-07
      DOI: 10.1007/s13370-022-01026-4
       
  • Gamma nearness near rings

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      Abstract: Abstract In this article, we define the notion of \(\Gamma \) -near-rings on weak nearness approximation spaces and explain some of the concepts and definitions. Then, we study some basic properties of \(\Gamma \) -nearness near-rings. \(\Gamma \) -nearness near-rings are different from \(\Gamma \) -nearness rings and \(\Gamma \) -nearness semirings because the set of \(\Gamma \) does not have to be grouped in \(\Gamma \) -nearness near-rings. Because of this, some properties defined in \(\Gamma \) -nearness rings and \(\Gamma \) -nearness semirings show some changes in \(\Gamma \) -nearness near-rings.
      PubDate: 2022-08-24
      DOI: 10.1007/s13370-022-01024-6
       
  • Some results on h-almost Ricci-Bourguignon soliton

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      Abstract: Abstract In this paper, we consider an h-almost Ricci-Bourguignon soliton and we provide some useful formulas of structure for this soliton. Then for an application of these formulas we show that a noncompact, complete nontrivial gradient h-Ricci-Bourguignon soliton is isometric to Euclidean space and a compact nontrivial h-almost Ricci-Bourguignon soliton is isometric to a Euclidean sphere with some conditions.
      PubDate: 2022-08-15
      DOI: 10.1007/s13370-022-01025-5
       
  • An efficient approach in rainfall prediction around Sathanur Dam, India,
           by model based clustering, structural equation modelling (SEM) and
           artificial neural networks (ANN)

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      Abstract: Abstract In the present paper, the rainfall forecast information is analyzed using model and density based clustering algorithms and good model is fitted by using structural equation modelling and artificial neural networks. Shapiro-Wilk normality test for Water Level, In Flow, Period, Rainfall are 0.7694, 0.2388, 0.7651, 0.4382 respectively with same p-value \(< 2.2 \times 10^{-16}\) . It shows that all are highly significantly non-normal. For the percentage on the Water Level, the variances were similar for Yes and No (Rainfall), significantly different, but for inflow the variances were not significantly different in the two groups, whereas for the period, the variances were similar for Yes and No (Rainfall), significantly different. The number of observations in the clusters 0 to cluster 9 are 18, 64, 39, 20, 19, 88, 41, 41, and 36. Here, cluster 0 represents the outlier in which we have 19 observations out of 366 observations in model based clustering. Furthermore, DBSCAN performs better for these data sets and can identify the correct set of clusters compared to k-means algorithms. The Fit indices for our structural equation model in which most of them show that our model is good to fit except the absolute type with Chi-square \(\left( \chi ^2\right) \) . Finally, we use 10 fold cross validated MSE for the linear model. The cv.glm is 0.1252 and it is shown in the box plot.
      PubDate: 2022-08-15
      DOI: 10.1007/s13370-022-01023-7
       
  • Correction to: On some new subclasses of bi-univalent functions defined by
           generalized Bivariate Fibonacci polynomial

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      PubDate: 2022-08-06
      DOI: 10.1007/s13370-022-01008-6
       
  • A new characterization of (P, Q)-Lucas polynomial coefficients of the
           bi-univalent function class associated with q-analogue of Noor integral
           operator

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      Abstract: Abstract In this study, by using Lucas polynomials, subordination and q-analogue of Noor integral operator, we will introduce an interesting new class \(Q^{q,\mu }(\tau ,\alpha ;x)\) of bi-univalent functions. Also we will obtain (P, Q)-Lucas polynomial coefficient estimates and Fekete–Szegö inequalities for this new class.
      PubDate: 2022-08-06
      DOI: 10.1007/s13370-022-01016-6
       
  • Numerical analysis of Fourier pseudospectral methods for the
           Klein–Gordon equation with smooth potentials

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      Abstract: Abstract In this paper, we provide a comprehensive numerical analysis of Fourier-type pseudo-spectral methods applied to the semilinear Klein–Gordon equation (KGE) with smooth potentials. It is shown explicitly that for KGE potentials of finite regularity, the convergence rate of such schemes is at most algebraic and is controlled solely by the regularity of input data and the associated KGE potential. It turns out that the spectral convergence rate can only occur for KGE models with entire potentials. In the latter case, an explicit quantitative error estimate, characterizing spectral convergence rate, is provided. The paper is concluded with several computational examples supporting our theoretical analysis.
      PubDate: 2022-08-06
      DOI: 10.1007/s13370-022-01021-9
       
  • Existence and asymptotic behaviors of nonlinear neutral Caputo nabla
           fractional difference equations

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      Abstract: Abstract In this paper, we consider a nonlinear neutral Caputo nabla fractional difference equation. In the analysis, we use the nabla discrete Mittag–Leffler functions to transform the equation into an applicable equation. By applying Krasnoselskii’s fixed point theorem, sufficient conditions for the existence of solutions are established, also the uniqueness of the solution is given by the Contraction mapping principle. In addition, we give interesting results for stability and asymptotic stability. To examine the validity of our findings, a concrete example with numerical simulation diagrams is analyzed. Our main results extend and generalize the results that are obtained in [12].
      PubDate: 2022-07-26
      DOI: 10.1007/s13370-022-01020-w
       
  • Algorithm for controllable and nilpotent intuitionistic fuzzy matrices

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      Abstract: Abstract In this paper various properties of nilpotent and controllable intuitionistic fuzzy matrix are explored. We develop an algorithm for controllable and nilpotent intuitionistic fuzzy matrices and reduce a controllable intuitionistic fuzzy matrix to canonical form using that algorithm.
      PubDate: 2022-07-26
      DOI: 10.1007/s13370-022-01019-3
       
  • New congruences for $$\ell $$ ℓ -regular overpartition pairs

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      Abstract: Abstract Let \(\overline{B}_{\ell }(n)\) denote the number of \(\ell -\) regular overpartition pairs of n. In this paper, we find some Ramanujan like congruences and infinite families of congruences for \(\overline{B}_{\ell }(n)\) for \(\ell \in \{3,4,5,8\}\) . For example, for \(n \ge 0\) and \(\alpha \ge 0\) , \(\overline{B}_{3}(4^{\alpha +1}(6n+5))\equiv 0\pmod {9}\) , \(\overline{B}_{3}(12n+10)\equiv 0\pmod {9}\) , \(\overline{B}_{5}(4n+3)\equiv 0\pmod {8}\) and \(\overline{B}_{8}(16n+12)\equiv 0\pmod {16}\) .
      PubDate: 2022-07-19
      DOI: 10.1007/s13370-022-01018-4
       
  • On bipolar-valued fuzzy quasi-semiprime ideals of $${\mathcal
           {L}}{\mathcal {A}}$$ L A -semigroups

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      Abstract: Abstract The aim of this paper is to apply bipolar-valued fuzzy sets in \({\mathcal {L}}{\mathcal {A}}\) -semigroup theory. We introduce the concept of bipolar-valued fuzzy quasi-semiprime and bipolar-valued fuzzy semiprime ideals in \({\mathcal {L}}{\mathcal {A}}\) -semigroups. In addition, we also characterize bipolar-valued fuzzy quasi-semiprime ideal by the properties of these bipolar-valued fuzzy points. Moreover, we investigated relationships between bipolar-valued fuzzy quasi-semiprime ideals and bipolar-valued fuzzy semiprime ideals. Finally, several characterizations of bipolar-valued fuzzy quasi-semiprime ideal by the properties of \(\left( t,t\right) \) -cut sets are given.
      PubDate: 2022-07-13
      DOI: 10.1007/s13370-022-01009-5
       
  • New fixed point results in extended b-metric-like spaces via simulation
           functions with applications

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      Abstract: Abstract The main ambition proposed in this article is to provide new fixed point results for triangular \(\alpha \) -orbital admissible contractions via some auxiliary and simulation functions in the frame of extended b-metric-like spaces. As an application, we prove the existence of a unique solution for a nonlinear fractional differential equation with exponential weighted integral boundary conditions via the generalized proportional fractional derivative of Caputo type with order \(\beta \in (n-1, n]\) . Further, we demonstrate the usability of our results through several examples.
      PubDate: 2022-07-12
      DOI: 10.1007/s13370-022-01017-5
       
 
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