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Generic affine differential geometry of space curves

Published online by Cambridge University Press:  14 November 2011

Shyuichi Izumiya
Affiliation:
Department of Mathematics, Faculty of Science, Hokkaido University, Sapporo 060, Japan
Takasi Sano
Affiliation:
Department of Mathematics, Faculty of Science, Hokkaido University, Sapporo 060, Japan

Abstract

We study affine invariants of space curves from the viewpoint of singularity theory of smooth functions. With the aid of singularity theory, we define a new equi-affine frame for space curves. We also introduce two surfaces associated with this equi-affine frame and give a generic classification of the singularities of those surfaces.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1998

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References

1Blaschke, W.. Vorlesusngen uber Differentialgeometrie II, Affine Differentialgeometrie (Berlin: Springer, 1923).Google Scholar
2Bruce, J. W.. On singularities, envelopes and elementary differential geometry. Math. Proc. Cambridge Philos. Soc. 89 (1981), 43–8.CrossRefGoogle Scholar
3Bruce, J. W. and Giblin, P. J.. Generic curves and surfaces. J. London Math. Soc. 24 (1981), 555–61.CrossRefGoogle Scholar
4Bruce, J. W. and Giblin, P. J.. Generic Geometry. Amer. Math. Monthly 90 (1983), 529–45.CrossRefGoogle Scholar
5Bruce, J. W. and Giblin, P. J.. Curves and singularities (London: Cambrige University Press, 1984).Google Scholar
6Fidal, D. L.. The existence of sextactic points. Math. Proc. Cambridge Philos. Soc. 96 (1984), 433–6.CrossRefGoogle Scholar
7Fidal, D. L. and Giblin, P. G.. Generic 1-parameter families of caustics by reflexion in the plane. Math. Proc. Cambridge Philos. Soc. 96 (1984), 425–32.CrossRefGoogle Scholar
8Giblin, P. J. and Sapiro, G.. Affine-invariant symmetry of sets (Preprint, 1995).Google Scholar
9Giblin, P. J. and Sapiro, G.. Affine invariant distances, envelopes and symmetry sets (Preprint, HP Laboratories Technical Report, 1996).Google Scholar
10Izumiya, S. and Sano, T.. Generic affine differential geometry of plane curves. Proc. Edinburgh Math. Soc. (to appear).Google Scholar
11Mochida, D. H. K., Romero-Fuster, R. C. and Ruas, M. A.. The geometry of surfaces in 4-space from a contact viewpoint. Geom. Dedicata 54 (1995), 323–32.CrossRefGoogle Scholar
12Nomizu, K. and Sasaki, T.. Affine Differential Geometry (Cambridge: Cambridge University Press, 1993).Google Scholar
13Porteous, I.. The normal singularities of submanifold. J. Differential Geom. 5 (1971), 543–64.CrossRefGoogle Scholar
14Schirokow, P. A. and Schirokow, A. P.. Affine Differentialgeometrie (Teubner, 1962).Google Scholar
15Su, B.. Affine Differential Geometry (Stuttgart: Gordon and Breach, 1983).Google Scholar