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arXiv 1809.04847math.CVcs.NAmath.COmath.NA
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离散周期矩阵和离散全纯积分在黎曼球面分支覆盖中的收敛性

Convergence of discrete period matrices and discrete holomorphic integrals for ramified coverings of the Riemann sphere

Alexander I. Bobenko, Ulrike Bücking

AI总结:

研究离散全纯函数在黎曼球面分支覆盖中的收敛性,通过三角剖分和立体投影定义离散调和函数,并证明离散周期矩阵收敛于连续情形,同时给出误差估计和离散全纯积分的收敛结果。

摘要:

我们考虑的是紧黎曼面,它们是黎曼球面$\hat{\mathbb{C}}$的分支覆盖。基于该覆盖的三角剖分及其立体投影,我们定义了离散(多值)调和和全纯函数。我们证明相应的离散周期矩阵收敛到其连续对应物。为了获得线性于最大边长的误差估计,我们适当地调整了每个分支点附近三角剖分。最后,我们还证明了对于所调整的分支覆盖三角剖分,离散全纯积分的收敛性结果。

英文摘要:

We consider the class of compact Riemann surfaces which are ramified coverings of the Riemann sphere $\hat{\mathbb{C}}$. Based on a triangulation of this covering of the sphere $\mathbb{S}^2\cong \hat{\mathbb{C}}$ and its stereographic projection, we define discrete (multi-valued) harmonic and holomorphic functions. We prove that the corresponding discrete period matrices converge to their continuous counterparts. In order to achieve an error estimate, which is linear in the maximal edge length of the triangles, we suitably adapt the triangulations in a neighborhood of every branch point. Finally, we also prove a convergence result for discrete holomorphic integrals for our adapted triangulations of the ramified covering.

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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