Mathematics Letters

Volume 7, Issue 2, June 2021

  • Convergence Analysis for Wave Equation by Explicit Finite Difference Equation with Drichlet and Neumann Boundary Condition

    Kedir Nebi Habib

    Issue: Volume 7, Issue 2, June 2021
    Pages: 19-24
    Received: 24 October 2020
    Accepted: 3 May 2021
    Published: 26 May 2021
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    Abstract: There are many problems in the field of science, engineering and technology which can be solved by differential equations formulation. The wave equation is a second order linear hyperbolic partial differential equation that describes the propagation of variety of waves, such as sound or water waves. In this paper we consider the convergence analysi... Show More
  • Some New Properties of Wd-fuzzy Implication Algebras

    Fang-an Deng

    Issue: Volume 7, Issue 2, June 2021
    Pages: 25-29
    Received: 23 April 2021
    Accepted: 4 May 2021
    Published: 27 May 2021
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    Abstract: Implication is an important logical connective in practically every propositional logic. In 1987, the so-called Fuzzy implication algebras were introduced by Wu Wangming, then various interesting properties of FI-algebras and some subalgebra of Fuzzy implication algebra, such as regular FI-algebras, commutative FI-algebras, Wd- FI-algebras, and oth... Show More
  • A Study of Operators on Fuzzy Sets

    Alhaji Jibril Alkali, Sylvanus Kupongoh Samaila

    Issue: Volume 7, Issue 2, June 2021
    Pages: 30-36
    Received: 4 April 2021
    Accepted: 20 May 2021
    Published: 15 June 2021
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    Abstract: Overtime, mathematics had been used as a tool in modeling real life phenomenon. In some cases, these problems cannot fit-into the classical deterministic or stochastic modeling techniques, perhaps due system complexity arising from lack of complete knowledge about the phenomenon or some uncertainty. The uncertainty could either be due to lack of cl... Show More