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arXiv · 1811.11585

Existence and Approximations for Order-Preserving Nonexpansive Semigroups over $\rm{CAT}(\kappa)$ Spaces

Parin Chaipunya
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Abstract

In this paper, we discuss the fixed point property for an infinite family of order-preserving mappings which satisfy the Lipschitzian condition on comparable pairs. The underlying framework of our main results is a metric space of any global upper curvature bound $\kappa \in \mathbb{R}$, i.e., a $\rm{CAT}(\kappa)$ space. In particular, we prove the existence of a fixed point for a nonexpasive semigroup on comparable pairs. Then, we propose and analyze two algorithms to approximate such a fixed point.

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Parin Chaipunya. 2018-11-28. Existence and Approximations for Order-Preserving Nonexpansive Semigroups over $\rm{CAT}(\kappa)$ Spaces. https://arxiv.org/abs/1811.11585

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