Fixed Point Subalgebras of Extended Affine Lie Algebras
classification
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ealafixedpointsubalgebraabelianaffinealgebrasautomorphism
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It is shown that the fixed point subalgebra of an EALA under a finite order automorphism (satisfying certain properties) is a sum of EALA's, an abelian subalgebra, and a subspace which is contained in the centralizer of the core.
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