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arXiv 1306.6733math.KTmath.NTmath.QA
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有理数上Hochschild上链的一个形式拟同构可以递归地构造

A Formality quasi-isomorphism for Hochschild cochains over rationals can be constructed recursively

Vasily Dolgushev

摘要:

据信arXiv:0808.2762,arXiv:math/9904055,在进入Kontsevich的形式准同构arXiv:q-alg/9709040的系数中,存在无理数(甚至可能是超越数)。本文证明了有理数上多项式代数的Hochschild上链的形式拟同构是可以递归构造的。证明所提出的递归算法的工作,是基于形式拟同构的存在性。然而,该算法不需要明确的知识进入Kontsevich的建设系数。虽然这个算法完全绕过了Tamarkin的方法arXiv:math/0003052,arXiv:math/9803025,但这个构造的灵感来自于V. Drinfeld的经典论文(Algebra i Analiz,1990)中的命题5.8。

英文摘要:

It is believed arXiv:0808.2762, arXiv:math/9904055 that, among the coefficients entering Kontsevich's formality quasi-isomorphism arXiv:q-alg/9709040, there are irrational (possibly even transcendental) numbers. In this paper, we prove that a formality quasi-isomorphism for Hochschild cochains of a polynomial algebra over rationals can be constructed recursively. The proof that the proposed recursive algorithm works, is based on the existence of formality quasi-isomorphism over reals. However, the algorithm requires no explicit knowledge of the coefficients entering Kontsevich's construction. Although this algorithm completely bypasses Tamarkin's approach arXiv:math/0003052, arXiv:math/9803025, the construction is inspired by Proposition 5.8 from the classical paper (Algebra i Analiz, 1990) by V. Drinfeld.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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