### Table of Contents

#### Articles

Generalized $\tau_1\tau_2 $-Closed Sets in Ideal Bitopological Spaces | |

Chalongchai Klanarong, Chawalit Boonpok | 563–575 |

On Strongly Semiprime Modules and Submodules Submodules | |

Hai Q. Dinh, Nguyen Trong Bac, Nico Johannes Groenewald, Dong Thi Hong Ngoc | 577–590 |

On Some Inequalities for Different Kinds of Convexity | |

Merve Avci Ardic, Muhamet Emin Ozdemir | 591–597 |

On Decompositions of Intra-Regular and Left Regular Ordered $\star$-Semigroups | |

Chong-Yih Wu | 599–611 |

New Hadamard's Inequality for $( \alpha _{1}, m_{1})$-$( \alpha _{2}, m_{2})$-Preinvex Functions on the Co-Ordinates | |

khaled boukerrioua, B. Meftah, T. Chiheb | 613–641 |

On the Diophantine Equation $4^x-p^y=3z^2$ where $p$ is a Prime | |

Julius Fergy Tiongson Rabago | 643–650 |

Fine Spectrum of the Generalized Difference Operator $\Delta_{uv}$ on the Sequence Space $c_0$ | |

Parmeshwary Dayal Srivastava, Sudhanshu Kumar | 651–663 |

Global Behavior of a Fourth Order Rational Difference Equation | |

R. Abo-Zeid, M. A. Al-Shabi | 665–674 |

$\epsilon$-Closed Sets | |

Talal Al-Hawary | 675–681 |

Some Inequalities for the $q$-Gamma and the $q$-Polygamma Functions | |

Ahmed Salem | 683–692 |

On Special Weakly Riccisymmetric and Generalized Ricci-Recurrent Trans-Sasakian Structures | |

Sudhakar Kumar Chaubey | 693–707 |

On $\phi-$Quasiconformally Symmetric $N(k)-$Contact Metric Manifolds | |

Avik De, Yoshio Matsuyama | 709–722 |

New Inequalities of Ostrowski Type for Mappings whose Derivatives are $(\alpha, m)$-Convex via Fractional Integrals | |

M. Emin Özdemir, Havva Kavurmaci-Önalan, Merve Avci-Ardic ̧ | 723–731 |

On the Kernel of the Black-Scholes Equation for the Option Price on Future Related to the Black-Scholes Formula | |

Amnuay Kananthai, Somsak Chanaim, Chongkolnee Rungruang | 733–744 |

Multivalued Coincidence Point Results in Partially Ordered Metric Spaces | |

Binayak S. Choudhury, Nikhilesh Metiya | 745–756 |

On Modular Difference Sequence Spaces | |

Parmeshwary Dayal Srivastava, Atanu Manna | 757–774 |

Common Fixed Point Results on Complex Valued $G_b$-Metric Spaces | |

Ozgur Ege1, Ismet Karaca | 775–787 |

On Global Existence of Solutions for Abstract Nonlinear Functional Neutral Integro-Differential Equations with Nonlocal Condition | |

Rupali S. Jain, Machhindra B. Dhakne | 789–799 |

$\Psi$-Stability for Nonlinear Difference Equations | |

T. S. Rao, G. Suresh Kumar, M.S. N. Murty | 801–815 |

Approximating Common Fixed Points for Two $G$-Asymptotically Nonexpansive Mappings with Directed Grahps | |

Manakorn Wattanataweekul | 817–830 |

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|ISSN 1686-0209|