2 citations · 2 across the 11 of their papers we have counts for
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A new characterization of (pre)liminary C*-algebras
Martino Lupini
Given an arbitrary countable ordinal , we introduce the notion of type C*-algebra and -subhomogeneous C*-algebra. When , these recover the notions of Fell C*-alg…
Derivation length and automorphism length of unital C*-algebras
Martino Lupini
This paper is a contribution to the study of the ordinal-valued invariants of derivation and automorphism length. Akemann--Pedersen and Elliott proved that a separable unital C*-al…
Definable -homology of separable C*-algebras
Martino Lupini
In this paper we show that the -homology groups of a separable C*-algebra can be enriched with additional descriptive set-theoretic information, and regarded as definab…
Perfect strategies for non-signalling games
M. Lupini, L. Mancinska, V. I. Paulsen +5
We unify and consolidate various results about non-signall-ing games, a subclass of non-local two-player one-round games, by introducing and studying several new families of games…
Actions of nonamenable groups on -stable -algebras
Eusebio Gardella, Martino Lupini
We study strongly outer actions of discrete groups on C*-algebras in relation to (non)amenability. In contrast to related results for amenable groups, where uniqueness of strongly…
An intrinsic order-theoretic characterization of the weak expectation property
Martino Lupini
We prove the following characterization of the weak expectation property for operator systems in terms of Wittstock's matricial Riesz separation property: an operator system sa…