Geodesic
Conditions for finite existence time of maximal tubes and bands in Lorentzian warped products
Izvestiya. Mathematics, Tome 44 (1995) no. 3, pp. 629-643 Cet article a éte moissonné depuis la source Math-Net.Ru

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Let $H$ be an $n$-dimensional Riemannian manifold, $\delta>0$ a smooth function on $H$, and $\widehat R$ the interval $(-\infty, +\infty)$ furnished with a negative definite metric $(-dt^2)$. Let $H\times_\delta\widehat R$ be the corresponding Lorentzian warped product [1, § 2.6]. We investigate the spacelike tubes and bands $\mathscr M$ with zero mean curvature in $\Omega\subset H$. It is shown that if $\mathscr M$ projects one-to-one onto some domain $\Omega\subset H$ of $\delta$-hyperbolic type, then $\mathscr M$ has a finite existence time. Examples are considered of maximal tubes and bands in Schwarzschild and de Sitter spaces. Geometric criteria are obtained for $\Omega$ to be of $\delta$-hyperbolic type. 
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V. A. Klyachin; V. M. Miklyukov. Conditions for finite existence time of maximal tubes and bands in Lorentzian warped products. Izvestiya. Mathematics, Tome 44 (1995) no. 3, pp. 629-643. http://geodesic.mathdoc.fr/item/IM2_1995_44_3_a9/

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