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- W1484204424 abstract "While the tangent space to an equisingular family of curves can be discribed by the sections of a twisted ideal sheaf, this is no longer true if we only prescribe the multiplicity which a singular point should have. However, it is still possible to compute the dimension of the tangent space with the aid of the equimulitplicity ideal. In this note we consider families L_m={(C,p) | mult_p(C)=m} with C in some linear system |L| on a smooth projective surface S and for a fixed positive integer m, and we compute the dimension of the tangent space to L_m at a point (C,p) depending on whether p is a unitangential singular point of C or not. We deduce that the expected dimension of L_m at (C,p) in any case is just dim|L|+2-m*(m+1)/2. The result is used in the study of triple-point defective surfaces in some joint papers with Luca Chiantini." @default.
- W1484204424 created "2016-06-24" @default.
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- W1484204424 date "2007-05-26" @default.
- W1484204424 modified "2023-09-27" @default.
- W1484204424 title "A Note on Equimultiple Deformations" @default.
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- W1484204424 hasPublicationYear "2007" @default.
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