Singularity for graph-directed conjugate equations indexed by a two-vertex digraph

Fuente: arXiv
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Main Author: Okamura, Kazuki
Format: Preprint
Published: 2026
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author Okamura, Kazuki
author_facet Okamura, Kazuki
contents We study graph-directed conjugate functional equations on the unit interval indexed by the complete digraph with self-loops on two vertices. We focus on the singularity and regularity of the solutions for compatible systems of weak contractions. First, we show that both solutions are singular in the affine case unless the two systems coincide; second, we obtain a dichotomy between singularity and smoothness for a class of linear fractional systems; and finally, we give a sufficient condition for singularity in a non-linear setting.
format Preprint
id arxiv_https___arxiv_org_abs_2603_21536
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Singularity for graph-directed conjugate equations indexed by a two-vertex digraph
Okamura, Kazuki
Dynamical Systems
Classical Analysis and ODEs
39B12, 39B72, 26A30
We study graph-directed conjugate functional equations on the unit interval indexed by the complete digraph with self-loops on two vertices. We focus on the singularity and regularity of the solutions for compatible systems of weak contractions. First, we show that both solutions are singular in the affine case unless the two systems coincide; second, we obtain a dichotomy between singularity and smoothness for a class of linear fractional systems; and finally, we give a sufficient condition for singularity in a non-linear setting.
title Singularity for graph-directed conjugate equations indexed by a two-vertex digraph
topic Dynamical Systems
Classical Analysis and ODEs
39B12, 39B72, 26A30
url https://arxiv.org/abs/2603.21536