On the field of definition of a cubic rational function and its critical points (vol 167, pg 1, 2016)

[摘要] We correct an error in the statement and proof of Proposition 1.5. It follows that for any prime p, there exists a cubic rational function over (Q) over bar (p) with Q(p)-rational critical points that is not equivalent to a function with Q(p)-rational coefficients.

[发布日期] 2016-12-01

[关键词] Critical points;Cubic rational functions;Field of definition;B. and M. Shapiro conjecture