Injectivity on one line
Injectivity on one line
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发表时间:
1993-05
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通讯作者:
J. Gwozdziewicz
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作者:
J. Gwozdziewicz
Let $k$ be an algebraically closed field of characteristic zero. Let $H:k^2\to k^2$ be a polynomial mapping such that the Jacobian $\text{Jac}\,H$ is a non-zero constant. In this note we prove, that if there is a line $l \subset k^2$ such that $H|_l:l\to k^2$ is an injection, then $H$ is a polynomial automorphism.