Galilean nilpotent spaces of dimension 3 with 2-dimensional time. Geometric properties
2010jfz | Dolgarew A.I., Dolgarew I.A.  // Penza State University, Penza, Russia, delivar@yandex.ru

Studied the curves and surfaces. Determined curvature, torsion curves do not possess. Proved definability of the curve function of its curvature. Considered time and space-time surface, defined by their first and second quadratic forms, the total curvature. Proved definability surface coefficients of their quadratic forms

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