Generalized quasi-metric semilattices

D Dikranjan, AG Bruno, HP Künzi, N Zava… - Topology and its …, 2022 - Elsevier
Motivated by the recent introduction of the intrinsic semilattice entropy, we study generalized
quasi-metric semilattices and their categories. We investigate the relationship between …

Intrinsic entropy for generalized quasimetric semilattices

I Castellano, D Dikranjan, D Freni… - Journal of Algebra and …, 2022 - World Scientific
We introduce the notion of intrinsic semilattice entropy h ̃ in the category ℒ qm of
generalized quasimetric semilattices and contractive homomorphisms. By using appropriate …

Weakly weighted generalised quasi-metric spaces and semilattices

I Castellano, AG Bruno, N Zava - Theoretical Computer Science, 2023 - Elsevier
Motivated by recent applications to entropy theory in dynamical systems, we generalise
notions introduced by Matthews and define weakly weighted and componentwise weakly …

Entropy on normed semigroups (Towards a unifying approach to entropy)

D Dikranjan, AG Bruno - arXiv preprint arXiv:1808.03858, 2018 - arxiv.org
We present a unifying approach to the study of entropies in Mathematics, such as measure
entropy, topological entropy, algebraic entropy, set-theoretic entropy. We take into account …

Entropy in a category

D Dikranjan, AG Bruno - Applied Categorical Structures, 2013 - Springer
The Pinsker subgroup of an abelian group with respect to an endomorphism was introduced
in the context of algebraic entropy. Motivated by the nice properties and characterizations of …

Entropy of a semigroup of maps from a set-valued view

B Hou, X Wang - arXiv preprint arXiv:1601.03294, 2016 - arxiv.org
In this paper, we introduce a new entropy-like invariant, named Hausdorff metric entropy, for
finitely generated semigroups acting on compact metric spaces from a set-valued view and …

The correspondence between partial metrics and semivaluations

MP Schellekens - Theoretical Computer Science, 2004 - Elsevier
Partial metrics, or the equivalent weightable quasi-metrics, have been introduced in
Matthews (Proc. 8th Summer Conf. on General Topology and Applications; Ann. New York …

Adjoint entropy vs Topological entropy

AG Bruno - Topology and its Applications, 2012 - Elsevier
Recently the adjoint algebraic entropy of endomorphisms of abelian groups was introduced
and studied in Dikranjan (2010)[6]. We generalize the notion of adjoint entropy to continuous …

[PDF][PDF] Algebraic and topological entropy of group actions

S Virili - preprint, 2013 - researchgate.net
Let G be a set and let s be a net of finite subsets of G. If pS, vq is a pre-normed semigroup,
that is, a semigroup S together with a non-negative real-valued function v, we introduce a …

On the categorical entropy and the topological entropy

K Kikuta, A Takahashi - International Mathematics Research …, 2019 - academic.oup.com
To an exact endofunctor of a triangulated category with a split generator, the notion of
entropy is given by Dimitrov–Haiden–Katzarkov–Kontsevich, which is a (possibly negative …