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- W2949672854 abstract "In this paper, we address the following two general problems: given two algebraic varieties in ${bf C}^n$, find out whether or not they are (1) isomorphic; (2) equivalent under an automorphism of ${bf C}^n$. Although a complete solution of either of these problems is out of the question at this time, we give here some handy and useful invariants of isomorphic as well as of equivalent varieties. Furthermore, and more importantly, we give a universal procedure for obtaining all possible algebraic varieties isomorphic to a given one, and use it to construct numerous examples of isomorphic, but inequivalent algebraic varieties in ${bf C}^n$. Among other things, we establish the following interesting fact: for isomorphic hypersurfaces ${p(x_1,...,x_n)=0}$ and ${q(x_1,...,x_n)=0}$, the number of zeros of $grad(p)$ might be different from that of $grad(q)$." @default.
- W2949672854 created "2019-06-27" @default.
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- W2949672854 date "2000-10-22" @default.
- W2949672854 modified "2023-10-01" @default.
- W2949672854 title "Embeddings of hypersurfaces in affine spaces" @default.
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- W2949672854 doi "https://doi.org/10.48550/arxiv.math/0010211" @default.
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