### CONTENTS
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Fixed point and periodic point theorems on metric spaces
Seong-Hoon Cho and Dong-Gon Park |
1 |

Bipolar-valued fuzzy ideal extensions of bck-algebras
Won Kyun Jeong |
17 |

Sequential estimation of the mean vector with beta-protection in the multivariate distribution
Sung Lai Kim, Hae In Song, Min Soo Kim, and Yu Seon Jang |
29 |

On subtractive extension of subsemimodules of semimodules
Jayprakash Ninu Chaudhari and Dipak Ravindra Bonde |
37 |

Transitive sets with $C^1$-stably limit shadowing
Keonhee Lee, Manseob Lee, and Seunghee Lee |
45 |

Topology fields, topological flows and topological organisms
Jae-Ryong Kim |
53 |

On some nonlinear integral inequalities on time scales
Sung Kyu Choi and Namjip Koo |
71 |

Optimal consumption and investment problem with regime-switching and CARA utility
Yong Hyun Shin |
85 |

Bialgebras with a projection onto a Hopf Algebras
Junseok Park |
91 |

Logarithmic composition inequality in Besov spaces
Young Ja Park |
105 |

A change of scale formula for generalized Wiener integrals II
Byoung Soo Kim, Teuk Seob Song, and Il Yoo |
111 |

Fuzzy intuitionistic almost $(r,s)$-continuous mappings
Eun Pyo Lee and Seung On Lee |
125 |

Convergence rate in strong law for arrays of rowwise AANA random variables
Kwang-Hee Han |
137 |

Determination of minimum length of some linear codes
Eun Ju Cheon |
147 |

Hilbert 3-class field towers of imaginary cubic function fields
Hwanyup Jung |
161 |

A solution of Einstein's field equations for the third class in $X_4$
Jong Woo Lee |
167 |

On linear $BCI$-algebras
Young Hee Kim and Keum Sook So |
175 |

On Putinar's matricial model operator of rank $2$
Jun Ik Lee |
181 |

A note on Eulerian polynomials of higher order
Jongsung Choi |
191 |

Stability properties in nonlinear discrete Volterra equations with unbounded delay
Sung Kyu Choi, Yunhee Kim, Namjip Koo, and Chanmi Yun |
197 |

Galois actions of a class invariant over quadratic number fields with discriminant $D\equiv 64\,({\rm mod}\,72)$
Daeyeol Jeon |
213 |

Minimal quasi-F covers of $\upsilon X$
ChangIl Kim |
221 |

Certain results on the $q$-Genocchi numbers and polynomials
Jong Jin Seo |
231 |

Some applications of mathematical resistance
Bo-Hyun Chung |
243 |

Category of maps and Gottlieb sets for maps, and their duals
Yeon Soo Yoon |
249 |

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