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A Whitney-stratified curve in $\mathbf R^3$ with multiple-point projections

Author(s): Michal Kwiecinski; Laurent Noirel
Journal: Proc. Amer. Math. Soc. 124 (1996), 1277-1279.
MSC (1991): Primary 57N80; Secondary 53A04
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Abstract: We construct a compact $\mathcal C^\infty$ Whitney-stratified curve in $\mathbf R^3$ , such that each of its plane projections has an infinite number of multiple points.

References:

1.: M. Kwieci\'{n}ski and L. Noirel, Sur une question de René Thom à propos des projections d'une stratification de Whitney, C. R. Acad. Sci. Paris Sér. I 318 (1994), 149--152. MR 95c:58010
2.: R. Thom, Quid des stratifications canoniques, in Singularities, Proc. Lille 1991 (J. P. Brasselet, ed.), London Math. Soc. Lecture Note Series, No. 201, 1994. CMP 95:01


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