Solutions of the Loewner equation with combined driving functions

The paper is devoted to the multiple chordal Loewner differential equation with different driving functions on two time intervals. We obtain exact implicit or explicit solutions to the Loewner equations with piecewise constant driving functions and with combined constant and square root driving func...

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Main Authors: Prokhorov, Dmitri Valentinovich, Zakharov, Andrei Mikhailovich, Zherdev, Andrey V.
Format: Article
Language:English
Published: Saratov State University 2021-08-01
Series:Известия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика
Subjects:
Online Access:https://mmi.sgu.ru/sites/mmi.sgu.ru/files/text-pdf/2021/08/317-325_prokhorov_et_al.pdf
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author Prokhorov, Dmitri Valentinovich
Zakharov, Andrei Mikhailovich
Zherdev, Andrey V.
author_facet Prokhorov, Dmitri Valentinovich
Zakharov, Andrei Mikhailovich
Zherdev, Andrey V.
author_sort Prokhorov, Dmitri Valentinovich
collection DOAJ
description The paper is devoted to the multiple chordal Loewner differential equation with different driving functions on two time intervals. We obtain exact implicit or explicit solutions to the Loewner equations with piecewise constant driving functions and with combined constant and square root driving functions. In both cases, there is an analytical and geometrical description of generated traces. Earlier, Kager, Nienhuis and Kadanoff integrated the chordal Loewner differential equation either with a constant driving function or with a square root driving function. In the first case, the equation generates a rectilinear slit in the upper half-plane which is orthogonal to the real axis $\mathbb R$. In the second case, a rectilinear slit forms an angle to $\mathbb R$. In our paper, the multiple chordal Loewner differential equation generates more complicated hulls consisting of three rectilinear and curvilinear fragments which can be either intersecting or disjoint. Analytical results of the paper are accompanied by geometrical illustrations.
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spelling doaj.art-871577b007e148ffb6b21ec0daa4415d2022-12-21T23:33:23ZengSaratov State UniversityИзвестия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика1816-97912541-90052021-08-0121331732510.18500/1816-9791-2021-21-3-317-325Solutions of the Loewner equation with combined driving functionsProkhorov, Dmitri Valentinovich0Zakharov, Andrei Mikhailovich1Zherdev, Andrey V.2Saratov State University, Russia, 410026, Saratov, Astrahanskaya str., 83Saratov State University, Russia, 410026, Saratov, Astrahanskaya str., 83Saratov State University, Russia, 410026, Saratov, Astrahanskaya str., 83The paper is devoted to the multiple chordal Loewner differential equation with different driving functions on two time intervals. We obtain exact implicit or explicit solutions to the Loewner equations with piecewise constant driving functions and with combined constant and square root driving functions. In both cases, there is an analytical and geometrical description of generated traces. Earlier, Kager, Nienhuis and Kadanoff integrated the chordal Loewner differential equation either with a constant driving function or with a square root driving function. In the first case, the equation generates a rectilinear slit in the upper half-plane which is orthogonal to the real axis $\mathbb R$. In the second case, a rectilinear slit forms an angle to $\mathbb R$. In our paper, the multiple chordal Loewner differential equation generates more complicated hulls consisting of three rectilinear and curvilinear fragments which can be either intersecting or disjoint. Analytical results of the paper are accompanied by geometrical illustrations.https://mmi.sgu.ru/sites/mmi.sgu.ru/files/text-pdf/2021/08/317-325_prokhorov_et_al.pdfloewner equationdriving functiontraceintegrability case
spellingShingle Prokhorov, Dmitri Valentinovich
Zakharov, Andrei Mikhailovich
Zherdev, Andrey V.
Solutions of the Loewner equation with combined driving functions
Известия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика
loewner equation
driving function
trace
integrability case
title Solutions of the Loewner equation with combined driving functions
title_full Solutions of the Loewner equation with combined driving functions
title_fullStr Solutions of the Loewner equation with combined driving functions
title_full_unstemmed Solutions of the Loewner equation with combined driving functions
title_short Solutions of the Loewner equation with combined driving functions
title_sort solutions of the loewner equation with combined driving functions
topic loewner equation
driving function
trace
integrability case
url https://mmi.sgu.ru/sites/mmi.sgu.ru/files/text-pdf/2021/08/317-325_prokhorov_et_al.pdf
work_keys_str_mv AT prokhorovdmitrivalentinovich solutionsoftheloewnerequationwithcombineddrivingfunctions
AT zakharovandreimikhailovich solutionsoftheloewnerequationwithcombineddrivingfunctions
AT zherdevandreyv solutionsoftheloewnerequationwithcombineddrivingfunctions