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Research Articles (Mathematics and Applied Mathematics): Recent submissions
Now showing items 101-120 of 706
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(Sciendo, 2024)The detour order of a graph G, denoted by (G), is the order of a longest path in G. If a and b are positive integers and the vertex set of G can be partitioned into two subsets A and B such that (hAi) ≤ a and (hBi) ...
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(Sciendo, 2022-11)Please read abstract in the article.
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(Wiley, 2023)In 1978 Thomassen asked whether planar hypohamiltonian oriented graphs exist. Infinite families of such graphs have since been described but for infinitely many it remained an open question whether planar hypohamiltonian ...
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(Taylor and Francis, 2022)In this paper, the generalised autoregressive heteroskedasticity (GARCH) model is applied to the pricing of collateralised options in the South African equity market. Symmetric GARCH and nonlinear asymmetric GARCH (AGARCH) ...
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(NISC Pty (Ltd) and Informa Limited (trading as Taylor and Francis Group), 2022)Tactical asset allocation (TAA) is a dynamic investment strategy which seeks actively to adjust fund allocation to a variety of asset classes by systematically exploiting inefficiencies and temporary imbalances in equilibrium ...
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(Mathematical Sciences Publishers, 2022-07)Please read abstract in the article.
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(L&H Scientific Publishing, 2022-06)In this paper, we construct and analyse a discrete cancer mathematical model. Essential dynamic properties such as positivity and boundedness of solutions are discussed. Using the Lyapunov stability theorem, we prove that ...
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(Universidad Politécnica de Valencia, 2022)The purpose of this paper is to introduce the class of enriched in- terpolative Kannan type operators on Banach space that contains the classes of enriched Kannan operators, interpolative Kannan type con- traction ...
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(Natural Sciences Publishing, 2022-10-01)The cryptocurrency market has grown exponentially since its inception in 2009. Asset price movements in this emerging market have been the subject of several research studies aimed at explaining their patterns. This article ...
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(Taylor and Francis, 2023)Inspired by arguments illustrating the Pythagorean theorem, this paper gives six interrelated dissection-like proofs of the law of cosines. Each proof treats the acute- and obtuse-angle cases together, and uses a trigonometric ...
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(American Institute of Mathematical Sciences, 2022-12)In this paper we present an explicit formula for the semigroup governing the solution to hyperbolic systems on a metric graph, satisfying general linear Kirchhoff's type boundary conditions. Further, we use this representation ...
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(Springer, 2024-03)Please read abstract in the article.
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(Cambridge University Press, 2023-04)In this note, we investigate some products of subgroups and vanishing conjugacy class sizes of finite groups. We prove some supersolubility criteria for groups with restrictions on the vanishing conjugacy class sizes of ...
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(Springer, 2022-10)The tenth Ebola outbreak in the Democratic Republic of Congo (DRC) that occurred from 2018 to 2020 was exacerbated by long-lasting conflicts and war in the region. We propose a deterministic model to investigate the impact ...
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(Mathematical Association of Thailand, 2022-06)In this paper we define a new class of mappings called (θ, α+)- proximal admissible contractions and obtain a unique best proximity point for such mappings in the setting of complete generalized metric space. Our result ...
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(MDPI, 2022-08-11)The purpose of this paper is to develop coupled fixed point theorems by C-class functions with mixed monotonicity, discuss the existence of the coupled fixed point of two mappings and obtain a coupled coincidence point ...
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(South African Statistical Association, 2022)In this paper, a closed-formexpression for a collateralised European option in the presence of counterparty credit risk and stochastic volatility is derived. The model is applied to Standard and Poor’s 500 index options. ...
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(University of Novi Sad, Serbia, 2022)In this paper, it is shown how the spaces of generalized functions associated with the construction of the generalized solution for nonlinear partial differential equations through the order completion method using convergence ...
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(Springer, 2022-03)Estrogen is known to stimulate the growth of breast cancer, but is also effective in treating the disease. This is referred to as the“estrogen paradox”. Furthermore, short-term treatment with estrogen can successfully ...
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A criterion for the global convergence of conjugate gradient methods under strong Wolfe line search (Elsevier, 2022-11)From 1952 until now, the sufficient descent property and the global convergence of conjugate gradient (CG) methods have been studied extensively. However, the sufficient descent property and the global convergence of some ...
Now showing items 101-120 of 706