Yayıncı "Ovidius Univ Press" için listeleme
Toplam kayıt 9, listelenen: 1-9
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Characterizations of generalized quasi-einstein manifolds
(Ovidius Univ Press, 2012)We give characterizations of generalized quasi-Einstein manifolds for both even and odd dimensions. -
Chen inequalities for submanifolds of a locally conformal almost cosymplectic manifold with a semi-symmetric metric connection
(Ovidius Univ Press, 2010)In this paper we prove Chen inequalities for submanifolds of a locally conformal almost cosymplectic manifold N(2m+1)(c) of constant phi-sectional curvature c endowed with a semi-symmetric metric connection, i.e., relations ... -
Commutator subgroups of generalized hecke and extended generalized hecke groups
(Ovidius Univ Press, 2018)Let p and q be integers such that 2 <= p <= q, p + q > 4 and let H-p,H-q be the generalized Hecke group associated to p and q. The generalized Hecke group H-p,H-q is generated by X (z) = -(z - lambda(p))(-1) and Y(z) = -(z ... -
Ellipses and harmonic mobius transformations
(Ovidius Univ Press, 2010)Harmonic Mobius transformations are the generalization of Mobius transformations to harmonic mappings. Their basic geometric property is that they take circles to ellipses. In this paper, we determine the images of ellipses ... -
On normal subgroups of generalized hecke groups
(Ovidius Univ Press, 2016)We consider the generalized Hecke groups H-p,H-q generated by X(z) = -(z - lambda(p))(-1), Y(z) = -(z + lambda(q))(-1) with lambda(p) = 2 cos(pi/p) and lambda(q) = 2 cos(pi/q) where 2 <= p <= q < infinity, p + q > 4. In ... -
On the efficiency of some p-groups
(Ovidius Univ Press, 2015)Let p be a prime number. In this paper, we work on the efficiency of the p-groups G(1) and G(2) defined by the presentations, P-G1 = < a, b, c; ab = bac, bc = cb, ac = ca, a(p alpha) = 1, b(p beta) = 1, c(p gamma) = 1 ... -
On the images of ellipses under similarities
(Ovidius Univ Press, 2013)We consider ellipses corresponding to any norm function on the complex plane and determine their images under the similarities which are special Mobius transformations. -
Second order parallel tensors on (k, mu)-contact metric manifolds
(Ovidius Univ Press, 2010)The object of the present paper is to study the symmetric and skew-symmetric properties of a second order parallel tensor in a (k, mu)-contact metric manifold. -
Spherical product surfaces in e-4
(Ovidius Univ Press, 2012)In the present study we calculate the coefficients of the second fundamental form and curvature ellipse of spherical product surfaces in E-4. Otsuki rotational surfaces and Ganchev-Milousheva rotational surfaces are the ...
