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Errata for Linear algebraic groups by Springer

Here is a different one, on page 299: Proposition 17.3.13(iii) giving the relative root system for quasi-simple groups of type $D_{n}$ is not correct as stated. I believe the following is correct, but …
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Algorithm for Brauer lifting via Brauer tree?

If I understand correctly, you have a tree with edges labelled by e1,...,en and vertices labelled by v0,...,vn,...v(n+m-1), where the last m >= 1 of these label the same (namely the exceptional) verte …
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