The general-position conjecture for critically transverse automorphism orbits

Let k\Bbbk be an algebraically closed field of characteristic 0, let X/kX/\Bbbk be a projective variety, let σAutkX\sigma \in \operatorname{Aut}_{\Bbbk} X, and let ZXZ \subseteq X be a closed subvariety. Here, σ\sigma and ZZ are in general position when ZZ is homologically transverse to all σ\sigma-fixed subschemes of XX. General-position conjecture. The collection {σnZ}\{\sigma^n Z\} is critically transverse if and only if σ\sigma and ZZ are in general position. This is suggested by the preceding characterization of critical transversality for an algebraic-group action; the conjecture specializes to the case of a point proved in the cited work, while the stated projective-variety formulation remains unresolved here.

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Primary source

Susan J. Sierra, “Geometric idealizers”, arXiv:0809.3971 (2008).

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