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The Lines of Striction on a Quadric


     

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It is well known that the line of striction of a regulus on a quadric is a rational quartic of type (1,3) cutting every generator of the regulus at a single point and every generator of the other regulus in three points. The rational quartic curve R4 in [3] has been studied in detail from the projective point of view. In this paper, the metrical specialisations consequent to the metrical definition of the line of striction, and a few allied problems are considered.
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  • The Lines of Striction on a Quadric

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Abstract


It is well known that the line of striction of a regulus on a quadric is a rational quartic of type (1,3) cutting every generator of the regulus at a single point and every generator of the other regulus in three points. The rational quartic curve R4 in [3] has been studied in detail from the projective point of view. In this paper, the metrical specialisations consequent to the metrical definition of the line of striction, and a few allied problems are considered.