Publication Date:
2015-09-02
Description:
We investigate the relationship between focal surfaces and surfaces at a constant distance from the edge of regression on a surface. We show that focal surfaces F1 and F2 of the surface M can be obtained by means of some special surfaces at a constant distance from the edge of regression on the surface M.
Print ISSN:
1687-9120
Electronic ISSN:
1687-9139
Topics:
Mathematics
,
Physics