Uniqueness of non-Euclidean Mass Center System and Generalized Pappus' Centroid Theorems in Three Geometries
Geometric Topology
2025-01-27 v2
Abstract
G.A. Galperin introduced the axiomatic mass center system for finite point sets in spherical and hyperbolic spaces, proving the uniqueness of the mass center system. In this paper, we revisit this system and provide a significantly simpler proof of its uniqueness. Furthermore, we extend the axiomatic mass center system to manifolds. As an application of our system, we derive a highly generalized version of Pappus' centroid theorem for volumes in three geometries - Euclidean, spherical, and hyperbolic - across all dimensions, offering unified and notably simple proofs for all three geometries.
Keywords
Cite
@article{arxiv.2412.03080,
title = {Uniqueness of non-Euclidean Mass Center System and Generalized Pappus' Centroid Theorems in Three Geometries},
author = {Yunhi Cho and Hyounggyu Choi},
journal= {arXiv preprint arXiv:2412.03080},
year = {2025}
}
Comments
42 pages, 8 figures, v2: Minor corrections including missing email address