Half-balanced braided monoidal categories and Teichmueller groupoids in genus zero
Half-balanced braided monoidal categories and Teichmueller groupoids in genus zero
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零属中的半平衡辫状幺半群范畴和 Teichmueller 群群
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发表时间:
2010
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通讯作者:
B. Enriquez
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作者:
B. Enriquez
We introduce the notions of a half-balanced braided monoidal category and of its contraction. These notions give rise to an explicit description of the action of the Galois group of QQ on Teichmueller groupoids in genus 0, equivalent to that of L. Schneps. We also show that a prounipotent version of this action is equivalent to a graded action.