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Regularity and Convergence of Random Curves

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Schramm–Loewner Evolution

Part of the book series: SpringerBriefs in Mathematical Physics ((BRIEFSMAPHY,volume 24))

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Abstract

In this chapter, we study regularity properties curves in the capacity parametrization and their convergence with respect to the uniform norm on compact time intervals.

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Notes

  1. 1.

    It is possible to give a more quantitative estimates for this convergence using the harmonic measure.

  2. 2.

    Remember that constant driving term corresponds to the trivial Loewner chain, which is a straight vertical line segment.

  3. 3.

    A boundary point is accessible, if there is a Jordan arc in the domain ending at that point. If we apply a conformal map from the domain onto \(\mathbb {D}\), say, then the image of that arc is continuous up to the boundary. Consequently, the accessible point is always a limit along the image of a Jordan arc in \(\mathbb {D}\) under a conformal map from \(\mathbb {D}\) onto the domain. The radial limit of the conformal map at the same boundary point of \(\mathbb {D}\) exists and is equal to the other limit as follows from Corollary 2.17 of [9].

  4. 4.

    A careful reader can notice that \(E^*\) defined in the latter way, which is more general, doesn’t necessarily define a (simple) graph, but a multigraph where a pair of vertices can be linked by several edges and where the endpoints of an edge don’t need to be distinct vertices.

  5. 5.

    It is natural to select the edge that belongs to \(\partial \varOmega _\delta \) if that exists. If it doesn’t exist, we can always add such an edge to \(\partial \varOmega _\delta \) without disturbing any of the required properties.

  6. 6.

    Such a curve is called a crossing and a crossing that doesn’t contain a proper subcrossing is called a minimal crossing .

  7. 7.

    A small calculation shows that the long side of the rhombi has length \((2m-1)n\) and the short side \((m-1)n\).

  8. 8.

    The minimum number of crossings is finite since there are even smooth crossings such as any “radial” path \(t \mapsto \phi (z_0 + t e^{i \theta })\), \(t \in (r,R)\) and \(\theta \in \mathbb {R}\).

  9. 9.

    That is, define \([\gamma ] = \{ \gamma \circ \phi \,:\, \phi : [0,1] \rightarrow [0,1] \text { increasing homeomorphism}\}\).

References

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Kemppainen, A. (2017). Regularity and Convergence of Random Curves. In: Schramm–Loewner Evolution. SpringerBriefs in Mathematical Physics, vol 24. Springer, Cham. https://doi.org/10.1007/978-3-319-65329-7_6

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