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Bibliographic Details
Main Author: Kurnosenko, Alexey
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2601.05795
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author Kurnosenko, Alexey
author_facet Kurnosenko, Alexey
contents The solution of Apollonius' problem on constructing a circle (line), tangent to three given circles (lines), is presented in terms of oriented circles and inversive invariants. Tangency is understood as the coincidence of tangent vectors at the common point, in contrast to counter-tangency. The problem has 0, 1 or 2 solutions. By reversing each of the given circles one by one, we obtain the remaining solutions of the classical non-oriented problem.
format Preprint
id arxiv_https___arxiv_org_abs_2601_05795
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Apollonius problem in terms of oriented circles
Kurnosenko, Alexey
Differential Geometry
The solution of Apollonius' problem on constructing a circle (line), tangent to three given circles (lines), is presented in terms of oriented circles and inversive invariants. Tangency is understood as the coincidence of tangent vectors at the common point, in contrast to counter-tangency. The problem has 0, 1 or 2 solutions. By reversing each of the given circles one by one, we obtain the remaining solutions of the classical non-oriented problem.
title Apollonius problem in terms of oriented circles
topic Differential Geometry
url https://arxiv.org/abs/2601.05795