Journal of the Mathematical Society of Japan

Some cases of four dimensional linear Noether's problem


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The linear Noether's problem means the rationality problem for the fixed field of linear actions on the rational function field. This paper deals with a part of our study on the four dimensional linear Noether's problem. Apart from the main part of our study, which will be published in other papers, the results which require complicated calculations by a computer are published here as a separate paper. The problem is affirmative for all of 5 non-solvable subgroups and the largest and one of the second largest subgroups of GL(4,Q). As relevant topics, we remark that PSp(3,2) (the simple group of order 1451520) has a generic polynomial over Q.

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J. Math. Soc. Japan Volume 62, Number 4 (2010), 1273-1288.

First available: 2 November 2010

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Mathematical Reviews number (MathSciNet)

Primary: 12F20: Transcendental extensions
Secondary: 12F12: Inverse Galois theory

linear Noether's problem finite reflection groups generic polynomial inverse Galois theorem


YAMASAKI, Aiichi. Some cases of four dimensional linear Noether's problem. Journal of the Mathematical Society of Japan 62 (2010), no. 4, 1273--1288. doi:10.2969/jmsj/06241273.

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