2
$\begingroup$

Let $F$ be an algebraically closed field and suppose that the torus $(F^*)^n$ acts on the Laurent polynomial ring $L$ in $n$ variables $X_1, \dots, X_n$ defined by $X_i \dashrightarrow a_iX_i$ for suitable scalars $a_i$.

Assume that the $a_i$ generate a subgroup of rank $n$ in $F^*$.

This action partitions the set of maximal ideals of $L$ into orbits.

For $f, g$ in $L$ say that an orbit $O$ 'occurs' if $f$ and $g$ lie in suitable maximal ideals $P$ and $Q$ respectively belonging to $O$.

In this situation, for given $f$ and $g$ that are not monomials is it true that only finitely many orbits 'occur' ?

$\endgroup$
2
  • $\begingroup$ What are you assuming about the field $F$? $\endgroup$ Commented 12 hours ago
  • $\begingroup$ @ Jason Starr The field is supposed to be algebraically closed. $\endgroup$
    – A. Gupta
    Commented 9 hours ago

0

You must log in to answer this question.