In mathematics, an ordinary singularity of an algebraic curve is a singular point of multiplicity r where the r tangents at the point are distinct (Walker 1950, p. 54). In higher dimensions the literature on algebraic geometry contains many inequivalent definitions of ordinary singular points.
References
edit- Walker, Robert J. (1950), Algebraic Curves, Princeton Mathematical Series, vol. 13, Princeton University Press, MR 0033083
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