How to find all reduced expression of the longest element in a Weyl group?

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lijr07
255 ●6 ●13 ●32

Let $W$ be a Weyl group. How to find reduced expression of the longest element $w_0 \in W$ in SageMath?

I can define

W = WeylGroup(["E", 6])
w0=W.long_element().reduced_word()

Then I got one reduced expression of $w_0$ . But how to obtain all reduced expression of $w_0$ ? Thank you very much.

1 Answer

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5426 ●4 ●44 ●121

Nihao.

Like that

sage: W = WeylGroup(["A", 4])
sage: w0 = W.long_element()
sage: w0.reduced_words()

Tab-completion is your friend : w0.red<TAB>

@FrédéricC, thank you very much!

lijr07 ( 3 years ago )

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Last updated: Nov 08 '21