in this paper, it has been shown that in case the base surface x is a WEINGARTEN surface (W-surface) and the congruence y generated by the instantaneous screwing axes de- rived in 13 ] is normal congruence, the surface x may only be a helicoid surface which is a special W-surface.
Primary Language | English |
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Subjects | Mathematical Sciences |
Journal Section | Research Articles |
Authors | |
Publication Date | January 1, 1991 |
Submission Date | January 1, 1991 |
Published in Issue | Year 1991 Volume: 40 |
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics.
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