TY - JOUR T1 - Characteristic Jacobi Operator on Almost Kenmotsu $3$-manifolds AU - Inoguchı, Jun-ichi PY - 2023 DA - October Y2 - 2023 DO - 10.36890/iejg.1300339 JF - International Electronic Journal of Geometry JO - Int. Electron. J. Geom. PB - Kazım İlarslan WT - DergiPark SN - 1307-5624 SP - 464 EP - 525 VL - 16 IS - 2 LA - en AB - The Ricci tensor field, $\varphi$-Ricci tensor field and the characteristic Jacobi operator on almost Kenmotsu $3$-manifolds are investigated. We give a classification of locally symmetric almost Kenmotsu $3$-manifolds. KW - Almost Kenmotsu manifolds KW - characteristic Jacobi operator KW - locally symmetric KW - Lie groups CR - [1] Acet, B. E., Perkta¸s, S. Y., Kılıç, E.: Kenmotsu manifolds with generalized Tanaka-Webster connection. 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