Abstract
The reducibility of the representation variety of a free abelian group of finite rank in a semisimple non-simply connected algebraic group is proved. Irreducible components of the representation variety of a free abelian group of rank 2 in groups of type A n are described.
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Original Russian Text © A.A. Sharomet, 2016, published in Trudy Matematicheskogo Instituta imeni V.A. Steklova, 2016, Vol. 292, pp. 255–263.
To V.P. Platonov on his 75th birthday
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Sharomet, A.A. On representation varieties of free abelian groups. Proc. Steklov Inst. Math. 292, 247–255 (2016). https://doi.org/10.1134/S0081543816010156
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DOI: https://doi.org/10.1134/S0081543816010156