The analytical method for embedding multidimensional pseudo-Euclidean geometries

As is known, the geometry of the local maximum mobility is an $n$-dimensional pseudo-Euclidean geometry. In this paper, we find all the $(n+1)$-dimensional geometries of the local maximal mobility whose metric functions contain the metric function of pseudo-Euclidean geometry as an argument. Such geometries are: $(n+1)$-dimensional pseudo-Euclidean geometry, $(n+1)$-dimensional special extension of $n$-dimensional pseudo-Euclidean geometry, $(n+1)$-dimensional geometry of constant curvature on a pseudo sphere.