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Vertices and inflexions of plane sections of surfaces in R^3
v2: 22 pages, Latex. Added references and comments, 10 figures. Proof of main result improved, after discussions with Prof. Terry Wall. See also: http://www.liv.ac.uk/~pjgiblin/... -
Level sets of functions and symmetry sets of smooth surface sections
15 pages, Latex, 6 grouped figures. The final version will appear in Mathematics of Surfaces. Lecture Notes in Computer Science (2005) -
Perestroikas of vertex sets at umbilic points
V2: Latex, 17 pages, 9 figures. Some minor misprints added. Interesting comments from Prof. V.I. Arnold added -
Pre-Symmetry Sets of 3D shapes
ACM-class: I.2; I.5; I.4; J.2. Latex, 3 grouped figures. The final version will appear in the proceedings of the First International Workshop on Deep Structure, Singularities... -
Geometry of isophote curves
15 pages, 7 figures
