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A categorification of the Malvenuto--Reutenauer algebra via a tower of groups. (arXiv:1909.01418v1 [math.RT]) http://arxiv.org/abs/1909.01418
A categorification of the Malvenuto--Reutenauer algebra via a tower of groups. (arXiv:1909.01418v1 [math.RT]) http://arxiv.org/abs/1909.01418