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Orthogonality related to Steiner and Pappus chains

2023/11/10 by Djordje Baralić, Baralic, Djordje, Vladimir Božović +3
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #51B05 #Cellular Mechanics and Interactions #Dynamical Systems (math.DS) #FOS: Mathematics #Force Microscopy Techniques and Applications #G.4 #Metric Geometry (math.MG)

paper · pdf · doi:10.48550/arxiv.2311.05895

openalex publication_date 2023/11/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The focus of this paper is on the study of specific circle formations known as orthogonal Pappus chains and the related incidence results that involve points of tangency between the circles in the construction. These chains give rise to new circle families, with their centres on a conic. The paper also explores similar questions for Steiner chains, although it is demonstrated that orthogonality cannot be defined for them. Nonetheless, explicit examples are provided, exhibiting comparable incidence results and raising whether two Steiner chains that share a common circle in the chains possess this property.

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