<abstract xmlns="http://www.w3.org/1999/xhtml"> In the present study we calculate the coefficients of the second fundamental form and curvature ellipse of spherical product surfaces in E4. Otsuki rotational surfaces and Ganchev-Milousheva rotational surfaces are the special type of spherical product surfaces in E4. Further, we give necessary and sufficient condition for the origin of NpM to lie on the curvature ellipse of such surfaces. Finally we get the necessary condition for Ganchev-Milousheva rotational surfaces in E4 to become flat or Chen type. We also give some examples of the projections of these surfaces in E3</abstract>

In the present study we calculate the coefficients of the second fundamental form and curvature ellipse of spherical product surfaces in E4. Otsuki rotational surfaces and Ganchev-Milousheva rotational surfaces are the special type of spherical product surfaces in E4. Further, we give necessary and sufficient condition for the origin of NpM to lie on the curvature ellipse of such surfaces. Finally we get the necessary condition for Ganchev-Milousheva rotational surfaces in E4 to become flat or Chen type. We also give some examples of the projections of these surfaces in E3

Spherical Product Surfaces in E4

Department of Mathematics, 16059 Bursa, TURKEY

Balıkesir University, Department of Mathematics, Balıkesir, TURKEY

Kocaeli University, Department of Mathematics, 41380 Kocaeli, TURKEY

Analele ştiinţifice ale Universităţii "Ovidius" Constanţa. Seria Matematică

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In the present study we calculate the coefficients of the second fundamental form and curvature ellipse of spherical product surfaces in E4. Otsuki rotational...

Spherical Product Surfaces in E⁴

Publicado en línea: 17 may 2013

Páginas: 41 - 54

DOI: https://doi.org/10.2478/v10309-012-0004-9

Palabras clave
Second fundamental form, Curvature ellipse, spherical product, Otsuiki surface

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