On the rectilinear congruences generated by the instantaneous screwing axes connected with a surface

On the rectilinear congruences generated by the instantaneous screwing axes connected with a surface

In this paper, the congruences generated by the instantaneous screwing axes of the moving trihedrons (DARBOÜX’s trihedrons) moving along the lines of curvature on a surface which is referred to its lines of curveture have been investigated.

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  • Communications, Series A1:Mathematics and Statistics