On exact Courant algebras
classification
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courantexactalgebraalgebrasleibnizmathfrakautomorphismcharacterised
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In this note we will show that exact Courant algebras over a Lie algebra $\mathfrak{g}$ can be characterised via Leibniz $2$- cocycles, and the automorphism group of a given exact Courant algebra is in a one-to-one correspondence with first Leibniz cohomology space of $\mathfrak{g}$.
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