On cubic-linear polynomial mappings

Details On cubic-linear polynomial mappings On cubic-linear polynomial mappings

2012-04-18

arxiv.org/abs/1204.4026v1

Indag. Math. (N.S.) 8 (1997), no. 4, 471-492

Mathematics

Complex Variables

Scientific paper

In the field of the Jacobian conjecture it is well-known after Druzkowski that from a polynomial "cubic-homogeneous" mapping we can build a higher-dimensional "cubic-linear" mapping and the other way round, so that one of them is invertible if and only if the other one is. We make this point clearer through the concept of "pairing" and apply it to the related conjugability problem: one of the two maps is conjugable if and only if the other one is; moreover, we find simple formulas expressing the inverse or the conjugations of one in terms of the inverse or conjugations of the other. Two nontrivial examples of conjugable cubic-linear mappings are provided as an application.

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