Karaś's multidegree conjecture for tame automorphisms

Let kk be a field of characteristic 00, and let 3p1d2d33\leq p_1\leq d_2\leq d_3 be integers with p1p_1 a prime number. Write mdegF\mathrm{mdeg} F for the multidegree of a polynomial map and let Tamek3\mathrm{Tame}\,k^3 denote the tame polynomial automorphisms of k3k^3. Karaś's conjecture. The triple (p1,d2,d3)(p_1,d_2,d_3) belongs to the multidegrees of tame automorphisms if and only if p1d2p_1\mid d_2 or d3p1N+d2Nd_3\in p_1\mathbb{N}+d_2\mathbb{N}. This conjecture concerns the characterization of multidegrees of tame automorphisms in dimension three; the source does not state whether it has been resolved.

Sources & referencesView supporting material

Primary source

Jiantao Li and Xiankun Du, “Multidegrees of Tame automorphisms with one prime number”, arXiv:1204.0930 (2012).

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