1. Bi-Periodic Balancing Quaternions
   Pages 68 - 75
   Emre SEVGİ, Dursun TAŞÇI
2. On The Norms of Another Form of $r-$Circulant Matrices with The Hyper-Fibonacci and Lucas Numbers
   Pages 76 - 85
   Mustafa BAHŞİ, Süleyman SOLAK
3. On Quasi-Conformal Flat Para-Sasakian Manifolds
   Pages 86 - 91
   İnan ÜNAL, Ramazan SARI
4. The Analysis of Mathematical Skills Used in the Software Industry
   Pages 92 - 100
   Deniz AKDUR
5. On the New Double Binomial Sequence Space
   Pages 101 - 111
   Serkan DEMİRİZ, Sezer ERDEM
6. Some New Topological Invariants for Chemical Structures Used in the Treatment of COVID-19 Patients
   Pages 112 - 119
   Abaid Ur Rehman VİRK
7. Investigating a Quadratic Bezier Curve Due to N-C-W and N-Bishop Frames
   Pages 120 - 127
   Hatice KUSAK SAMANCI, Muhsin İNCESU
8. (Independent) $k$-Rainbow Domination of a Graph
   Pages 128 - 135
   Zhila MANSOURİ, Doost Ali MOJDEH
9. Fuzzy Modelling of Covid-19 in Turkey and Some Countries in The World
   Pages 136 - 150
   Harun BALDEMİR, Agah AKIN, Ömer AKIN
10. Behaviors of Eigenvalues and Eigenfunctions of The Singular Shrödinger Operator
    Pages 151 - 156
    Rauf AMİROV, Sevim DURAK
11. On The Solution of an Infinite System of Discrete Equations
    Pages 157 - 160
    Anar ADİLOĞLU, Mehmet GÜRDAL
12. On The Curves $N-T^{\ast }N^{\ast }$ in $E^3$
    Pages 161 - 165
    Şeyda KILIÇOGLU, Süleyman ŞENYURT
13. Timelike Ruled Surfaces in de-Sitter 3-Space
    Pages 166 - 175
    Tuğba MERT
14. Extraction of Some New Solutions of Linear Differential Equations by Dual Space
    Pages 176 - 183
    Gülay KORU YÜCEKAYA