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Bruno Vallette 《Applied Categorical Structures》2009,17(1):43-61
We give an explicit construction of the free monoid in monoidal abelian categories when the monoidal product does not necessarily
preserve coproducts. Then we apply it to several new monoidal categories that appeared recently in the theory of Koszul duality
for operads and props. This gives a conceptual explanation of the form of the free operad, free dioperad and free properad.
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B. Enriquez 《Advances in Mathematics》2005,197(2):430-479
We propose a variant to the Etingof-Kazhdan construction of quantization functors. We construct the twistor JΦ associated to an associator Φ using cohomological techniques. We then introduce a criterion ensuring that the “left Hopf algebra” of a quasitriangular QUE algebra is flat. We prove that this criterion is satisfied at the universal level. This gives a construction of quantization functors, equivalent to the Etingof-Kazhdan construction. 相似文献
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