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arXiv 1204.5220math.AP
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图Ginzburg-Landau泛函的Gamma收敛性

Gamma-convergence of graph Ginzburg-Landau functionals

Yves van Gennip, Andrea L. Bertozzi

摘要:

本文研究了基于图的Ginzburg-Landau泛函的Gamma收敛性,包括扩散界面参数为零时的极限和图中无穷点时的极限.对于一般图,我们证明了在极限λ-> 0时,图割目标函数是可恢复的.我们证明了这个目标函数在4-正则图上的连续极限与全变差方差有关,并将其与离散化的Ginzburg-Landau泛函的极限进行了比较。对于这两个泛函,我们还研究了同时极限<$0-> 0和m ->无穷大,通过将<$0表示为m的幂并取m ->无穷大。最后研究了完全连通图上非局部平均型泛函的连续极限。

英文摘要:

We study Gamma-convergence of graph based Ginzburg-Landau functionals, both the limit for zero diffusive interface parameter epsilon->0 and the limit for infinite nodes in the graph m -> infinity. For general graphs we prove that in the limit epsilon -> 0 the graph cut objective function is recovered. We show that the continuum limit of this objective function on 4-regular graphs is related to the total variation seminorm and compare it with the limit of the discretized Ginzburg-Landau functional. For both functionals we also study the simultaneous limit epsilon -> 0 and m -> infinity, by expressing epsilon as a power of m and taking m -> infinity. Finally we investigate the continuum limit for a nonlocal means type functional on a completely connected graph.

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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