Scaled Relative Graphs in Normed Spaces

Fuente: arXiv
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Main Author: Padoan, Alberto
Format: Preprint
Published: 2026
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author Padoan, Alberto
author_facet Padoan, Alberto
contents The paper extends the Scaled Relative Graph (SRG) framework of Ryu, Hannah, and Yin from Hilbert spaces to normed spaces. Our extension replaces the inner product with a regular pairing, whose asymmetry gives rise to directional angles and, in turn, directional SRGs. Directional SRGs are shown to provide geometric containment tests certifying key operator properties, including contraction and monotonicity. Calculus rules for SRGs under scaling, inversion, addition, and composition are also derived. The theory is illustrated by numerical examples, including a graphical contraction certificate for Bellman operators.
format Preprint
id arxiv_https___arxiv_org_abs_2604_02407
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Scaled Relative Graphs in Normed Spaces
Padoan, Alberto
Optimization and Control
Systems and Control
The paper extends the Scaled Relative Graph (SRG) framework of Ryu, Hannah, and Yin from Hilbert spaces to normed spaces. Our extension replaces the inner product with a regular pairing, whose asymmetry gives rise to directional angles and, in turn, directional SRGs. Directional SRGs are shown to provide geometric containment tests certifying key operator properties, including contraction and monotonicity. Calculus rules for SRGs under scaling, inversion, addition, and composition are also derived. The theory is illustrated by numerical examples, including a graphical contraction certificate for Bellman operators.
title Scaled Relative Graphs in Normed Spaces
topic Optimization and Control
Systems and Control
url https://arxiv.org/abs/2604.02407