Roots, iterations and logarithms of formal automorphismsPraagman, C., 1987, In : Aequationes mathematicae. 33, p. 251-259 9 p.
Research output: Contribution to journal › Article › Academic › peer-review
In this paper it is proved that having a logarithm is equivalent to having roots of arbitrary order in the group of automorphisms of a formal power series ring, and in algebraic subgroups too.
|Number of pages||9|
|Publication status||Published - 1987|