Yazar "Aktay, Şirin" için listeleme
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Almost contact metric structures induced by G(2) structures
Özdemir, Nülifer; Solgun, Mehmet; Aktay, Şirin (Scientific Technical Research Council Turkey-Tubitak, 2017)We study almost contact metric structures induced by 2-fold vector cross products on manifolds with G(2) structures. We get some results on possible classes of almost contact metric structures. Finally, we give examples. -
Almost contact metric structures induced by G2 structures
Özdemir, Nülifer; Solgun, Mehmet; Aktay, Şirin (2017)We study almost contact metric structures induced by 2-fold vector cross products on manifolds with G2 structures. We get some results on possible classes of almost contact metric structures. Finally, we give examples. -
Almost Contact Metric Structures on 5-Dimensional Nilpotent Lie Algebras
Özdemir, Nülifer; Solgun, Mehmet; Aktay, Şirin (MDPI AG, 2016)We study almost contact metric structures on 5-dimensional nilpotent Lie algebras and investigate the class of left invariant almost contact metric structures on corresponding Lie groups. We determine certain classes that ... -
Dirac Operator on a 7-Manifold with Deformed G(2) Structure
Özdemir, Nülifer; Aktay, Şirin (Ovidius University Press, 2012)In this work, we consider the deforming of a G(2) structure by a vector field on a 7-manifold. To obtain the metric corresponding to deformed G(2) structure, a new map is defined. By using this new map, the co-variant ... -
G2 yapılarının bazı A37-deformasyonları
Aktay, Şirin (Anadolu Üniversitesi, 2013)Bu tezde, G? yapıya sahip 7-boyutlu bir Riemann manifoldu üzerindeki temel 3-formun, herhangi bir vektör alanı ile deformasyonu ele alınarak; yeni G? yapının sınıf değişimleri incelenmiştir. Öncelikle, deformasyon ile elde ... -
Integrable G2 Structures on 7-dimensional 3-Sasakian Manifolds
Özdemir, Nülifer; Aktay, Şirin (2017)7-boyutlu 3-Sasaki manifoldlar üzerinde kanonik ve hemen-hemen paralel G2 yapıların varlıgı bilinmektedir. Bu çalı¸smada kanonik veya hemen-hemen paralel olmayan ? G2 yapıların varlıgı incelenmi¸stir. 7-boyutlu 3- Sasaki ... -
On deformations of G(2)-structures by Killing vector fields
Özdemir, Nülifer; Aktay, Şirin (Walter De Gruyter GMBH, 2014)In this paper, vectorial type deformations of a 7-dimensional manifold with structure group G 2 are considered. The fundamental 3-form of such a manifold is deformed by a vector field, and the new cross product and the new ... -
On deformations of parallel G(2) structures and almost contact metric structures
Aktay, Şirin (Walter De Gruyter GMBH, 2017)It is known that manifolds with G(2) structures have almost contact metric structures; see [3; 16]. In this manuscript, we deform a parallel G(2) structure by a parallel vector field and investigate the properties of the ... -
Quasi-Sasakian Structures on 5-Dimensional Nilpotent Lie Algebras
Özdemir, Nülifer; Aktay, Şirin; Solgun, Mehmet (Ankara University, Fac Sci, 2019)In this study, we examine the existence of quasi-Sasakian structures on nilpotent Lie algebras of dimension five. In addition, we give some results about left invariant quasi-Sasakian structures on Lie groups of dimension ...
