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Published in 2019 at "Bulletin of the Malaysian Mathematical Sciences Society"
DOI: 10.1007/s40840-017-0557-x
Abstract: In this paper, we develop a formula for spacelike surfaces in a four-dimensional Lorentzian space form which involves its mean curvature vector field, the Gauss curvature of the induced metric and the Gauss curvature of…
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Keywords:
null normal;
non degenerate;
spacelike surfaces;
degenerate null ... See more keywords
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Published in 2020 at "Differential Geometry and Its Applications"
DOI: 10.1016/j.difgeo.2020.101667
Abstract: Abstract Let M 1 3 ( c ) be an 3-dimensional Lorentz space form and C ( M 1 3 ( c ) ) denote the conformal transformation group of M 1 3 ( c…
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Keywords:
homogeneous spacelike;
spacelike surfaces;
conformal homogeneous;
lorentz space ... See more keywords