Corrections and additions to: “On the degrees and rationality of certain characters of finite Chevalley groups” (Trans. Amer. Math. Soc. 165 (1972), 251–273) by C. T. Benson and Curtis

Abstract:

Some theorems in the Benson-Curtis paper [1] were stated subject to possible exceptions in type ${E_7}$, corresponding to the two irreducible characters of the Weyl group of degree 512. An argument due to T. A. Springer($^{1}$) shows that these cases actually are exceptions to the theorems, and also that there are four exceptional cases in type ${E_8}$ (whose possible existence was overlooked in the original version of the paper), corresponding to the characters of the Weyl group of degree 4096.