On a class of rational cuspidal plane curves
classification
alg-geom
math.AG
keywords
curvescuspidalplanerationalclasscompletecuspsdiscuss
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We obtain new examples and the complete list of the rational cuspidal plane curves $C$ with at least three cusps, one of which has multiplicity ${\rm deg}\,C - 2$. It occurs that these curves are projectively rigid. We also discuss the general problem of projective rigidity of rational cuspidal plane curves.
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