دورية
Projections of smooth surfaces
| العنوان: | Projections of smooth surfaces |
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| المؤلفون: | Platonova, O. A. |
| المصدر: | Journal of Mathematical Sciences; December 1986, Vol. 35 Issue: 6 p2796-2808, 13p |
| مستخلص: | The paper contains the classification of singularities for plane projections of smooth surfaces by means of a pencil of straight lines originating from a point (14 normal forms). The points of a surface in general position are divided into classes which define the projection type along an arbitrary direction with almost every point of the tangent to that direction as the projection center. Only isolated points on isolated asymptotic straight lines turn out to be exceptional. Such points are called focal. Singularities of the set of focal points are studied in the paper. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 10723374 15738795 |
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| DOI: | 10.1007/BF01106075 |