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Results tagged with lyndon-words
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user 51668
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The shuffle algebra over the rationals is isomorphic to the polynomial algebra in the Lyndon...
This is proven in Theorem 6.3.4 of Hopf Algebras in Combinatorics
by Grinberg and Reiner.
They call it "Radford’s theorem on the shuffle algebra" citing Theorem 3.1.1(e) of A natural ring basis for t …
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