Free algebra over infinite alphabet

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Is it possible to work with a free algebra over an infinite alphabet ? Or to define an Infinite ring of non-commutative polynomials ? I need one of these structures to work with the quasi shuffle product.

asked Dec 29 '11

Matthieu Deneufchâtel gravatar image Matthieu Deneufchâtel
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Asked: Dec 29 '11

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Last updated: Dec 29 '11

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