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math.FA2026

The sup-inf-completion of a Dedekind complete vector lattice

Eder Kikianty, Luan Naude, Mark Roelands +1

We introduce the sup-inf-completion of a Dedekind complete vector lattice, an essentially unique extension in which every nonempty subset has both a supremum and an infimum. Since…

math.FA2026

The Riemann integral on Dedekind complete -algebras

Eder Kikianty, Luan Naude, Mark Roelands +1

In this paper we develop a theory of integration for locally band preserving functions, introduced by Ercan and Wickstead, on Dedekind complete -algebras. Specifically, we const…

math.FA2026

An order-theoretic characterization of JB-algebras

Mark Roelands, Samuel Tiersma

We give an order-theoretic characterization of the JB-algebras among the complete order unit spaces in terms of the existence of an order-anti-automorphism of the interior of the c…

math.FA2025

Classical theorems from analysis for locally band preserving functions on Dedekind complete -algebras

Eder Kikianty, Luan Naude, Mark Roelands +1

In this paper we explore the concept of locally band preserving functions, introduced by Ercan and Wickstead, on Dedekind complete -algebras. Specifically, we show that all sup…

math.FA2025

Infinite dimensional symmetric cones and gauge-reversing maps

Bas Lemmens, Mark Roelands, Marten Wortel

The famous Koecher-Vinberg theorem characterises the finite dimensional formally real Jordan algebras among the finite dimensional order unit spaces as the ones that have a symmetr…

math.FA2025

L-functional analysis

Eder Kikianty, Miek Messerschmidt, Luan Naude +5

Inspired by the theories of Kaplansky-Hilbert modules and probability theory in vector lattices, we generalise functional analysis by replacing the scalars or $\mathbb…