TY - JOUR ID - 67030 TI - On a Classification of Almost $\alpha $-Cosymplectic Manifolds JO - Khayyam Journal of Mathematics JA - KJM LA - en SN - AU - Erken, İrem Küpeli AD - Faculty of Engineering and Natural Sciences, Department of Mathematics, Bursa Technical University, Bursa, Turkey. Y1 - 2019 PY - 2019 VL - 5 IS - 1 SP - 1 EP - 10 KW - Almost α-Cosymplectic manifold KW - projectively flat KW - conformally flat KW - concircularly flat DO - 10.22034/kjm.2018.67030 N2 - The object of the present paper is to study almost $\alpha $-cosymplectic manifolds. We consider projectively flat, conformally flat, and concircularly flat almost $\alpha $-cosymplectic manifolds (with the $\eta $-parallel tensor field $\phi h$) and get some new properties. We conclude the paper by giving an example of $\alpha $-Kenmotsu manifold, which verifies our results. UR - https://www.kjm-math.org/article_67030.html L1 - https://www.kjm-math.org/article_67030_b36cd9107ed71f514da1f1c232d7e881.pdf ER -