منابع مشابه
Symmetrization of Convex Planar Curves
Given a closed convex planar curve, we call great chords the segment connecting two points with parallel tangents. We call great diagonals the support lines of the great chords and mid-parallels the lines through the mid-point of a great chord parallel to the corresponding tangents. Two curves are called parallel if the corresponding great diagonals are parallel. In this paper, we define the pa...
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Department of Mathematics, University of Oil and Gas (Gubkin) Moscow 117036, Russia [email protected] Department of Mathematics, University of Stockholm S-10691, Sweden, [email protected] Abstra t. In this paper we recall two basic conjectures on the developables of convex projective curves, prove one of them and disprove the other in the first nontrivial case of curves in RP3. Namely...
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ژورنال
عنوان ژورنال: Czechoslovak Mathematical Journal
سال: 1968
ISSN: 0011-4642,1572-9141
DOI: 10.21136/cmj.1968.100867