Abstract
We generalize the Plücker formula for the number of inflection points of a complex projective curve and derive a formula for the number of sextatic points of such a curve. We also obtain an upper estimate for the number of vertices of a real algebraic curve. The proof uses a new result related with integration on the Euler characteristic. Bibliography: 5 titles.
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Additional information
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 231, 1995, pp. 255–268.
Translated by N. Yu. Netsvetaev.
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Viro, A.O. Differential geometry “in the large” of plane algebraic curves and integral formulas for invariants of singularities. J Math Sci 91, 3499–3507 (1998). https://doi.org/10.1007/BF02434928
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DOI: https://doi.org/10.1007/BF02434928