Abstract
We prove that if a solvable group A acts coprimely on a solvable group G, then A has a “large” orbit in its corresponding action on the set of ordinary complex irreducible characters of G. This extends (at the cost of a weaker bound) a 2005 result of A. Moretó who obtained such a bound in case that A is a p-group.
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Part of this work was done while the first author was on sabbatical leave and was visiting the University of Wisconsin-Parkside. He thanks the Mathematics Department there for its hospitality.
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Keller, T.M., Yang, Y. Orbits of finite solvable groups on characters. Isr. J. Math. 199, 933–940 (2014). https://doi.org/10.1007/s11856-013-0073-0
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DOI: https://doi.org/10.1007/s11856-013-0073-0