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An Khuong Doan's user avatar
An Khuong Doan's user avatar
An Khuong Doan
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Regular local artinian k-algebra with residue field k is k
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Regular local artinian k-algebra with residue field k is k
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A question on the root systems of simple Lie algebras in the 90 degree case
That's what I'm looking for. Thank you very much!
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A question on the root systems of simple Lie algebras in the 90 degree case
Can you give me the proof of the claim: "an isomorphism between two irreducible root systems must be conformal: it must scale the metrics by a constant factor "? Thank you very much.