Geodesic
Grassmann manifold $V\sp 4\sb 3$ in the projective space $P\sb 7$ with characteristics consisting of a quadric and two planes
Mathematica Bohemica, Tome 118 (1993) no. 3, pp. 225-240.

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Some results in the geometry of four-parametric manifolds of three-dimensional spaces in the projective space $P_7$ are found. The properties of such a manifold $V^4_3$ with characteristics consisting of a quadric and two planes are studied. The properties of the manifold dual to $V^4_3$ are found. Some results in the geometry of linear spaces from [1],[2],[3],[4] are used. The notation of the quantities is the same as in [4].
DOI : 10.21136/MB.1993.125928
Classification : 53A20
Keywords: systems of linear spaces; dual manifold; four-parametric manifolds; projective space; characteristics; differential geometry of systems of linear spaces 
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Vala, Josef. Grassmann manifold $V\sp 4\sb 3$ in the projective space $P\sb 7$ with characteristics consisting of a quadric and two planes. Mathematica Bohemica, Tome 118 (1993) no. 3, pp. 225-240. doi : 10.21136/MB.1993.125928. http://geodesic.mathdoc.fr/articles/10.21136/MB.1993.125928/

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