The pitch and the angle of pitch of a closed nonnull ruled hypersurface whose generator is spacelike in $R^{k+2}_1$

The pitch and the angle of pitch of a closed nonnull ruled hypersurface whose generator is spacelike in $R^{k+2}_1$

In this paper, the pitch and the angle of pitch of a closed nonnull ruled hypersurface whose generators are spacelike are calculated in $R^{k+2}_1$.

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