Timeline for On the fixed point of automorphism of $\mathbb F_3[[T]]$
Current License: CC BY-SA 3.0
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| Dec 17, 2013 at 1:45 | comment | added | Michael Zieve | Just to be clear: this answer is an augmentation of item (2) from my answer, namely, that if $\sigma$ has finite order then it has fixed points outside $\mathbf{F}_3$. What is new here is the fact that the fixed point described in my answer generates all fixed points, in the sense that every fixed point is a formal power series in "my" fixed point. On the other hand, this answer doesn't address infinite-order $\sigma$'s. | |
| Dec 16, 2013 at 19:03 | history | edited | Lubin | CC BY-SA 3.0 |
Expanded my response slightly.
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| Dec 16, 2013 at 18:55 | history | answered | Lubin | CC BY-SA 3.0 |