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We study a coderivation from a cobimodule into a coalgebra. Vector cofields are defined by the action of a codual bicomodule on a coalgebra. This action is induced by a codifferential. A construction of a codual object in the category of…

Quantum Algebra · Mathematics 2009-10-31 A. Borowiec , G. A. Vazquez Coutino

We present algebraic semantics for the classical logic of proofs based on Boolean algebras. We also extend the language of the logic of proofs in order to have a Boolean structure on justification terms and equality predicate on terms. In…

Logic · Mathematics 2025-01-17 Amir Farahmand Parsa , Meghdad Ghari

We introduce the notion of a bicocycle double cross product (resp. sum) Lie group (resp. Lie algebra), and a bicocycle double cross product bialgebra, generalizing the unified products. On the level of Lie groups the construction yields a…

Quantum Algebra · Mathematics 2022-04-05 O. Esen , P. Guha , S. Sütlü

We prove that the opposite of the category of coalgebras for the Vietoris endofunctor on the category of compact Hausdorff spaces is monadic over Set. We deliver an analogous result for the upper, lower and convex Vietoris endofunctors…

Logic · Mathematics 2025-09-17 Marco Abbadini , Ivan Di Liberti

We extend Stone duality to a fully faithful embedding of condensed sets into fpqc sheaves over an arbitrary field, which preserves colimits and finite limits. We study how familiar notions from condensed mathematics/topology and algebraic…

Algebraic Geometry · Mathematics 2024-01-08 Rok Gregoric

Stone's representation theorem asserts a duality between Boolean algebras on the one hand and Stone space, which are compact, Hausdorff, and totally disconnected, on the other. This duality implies a natural isomorphism between the…

Geometric Topology · Mathematics 2025-08-12 Beth Branman , Robert Alonzo Lyman

The aim of this paper is to introduce an algebraic structure on the set of all coalgebras with the same state space over the given type which allows us to present definitions of weak and delay bisimulation for coalgebras. Additionally, we…

Logic in Computer Science · Computer Science 2013-09-06 Tomasz Brengos

We introduce the notion of vertex coalgebra, a generalization of vertex operator coalgebras. Next we investigate forms of cocommutativity, coassociativity, skew-symmetry, and an endomorphism, $D^*$, which hold on vertex coalgebras. The…

Quantum Algebra · Mathematics 2008-01-22 Keith Hubbard

In this note we shall generalize the Stone duality between compact totally disconnected spaces and Boolean algebras to a duality between all complete non-Archimedean uniform spaces and Boolean algebras.

General Topology · Mathematics 2011-05-12 Joseph Van Name

Motivated by the need to reason about hybrid systems, we study limits in categories of coalgebras whose underlying functor is a Vietoris polynomial one - intuitively, the topological analogue of a Kripke polynomial functor. Among other…

Logic in Computer Science · Computer Science 2019-03-14 Dirk Hofmann , Renato Neves , Pedro Nora

Processes are often viewed as coalgebras, with the structure maps specifying the state transitions. In the simplest case, the state spaces are discrete, and the structure map simply takes each state to the next states. But the coalgebraic…

Category Theory · Mathematics 2015-12-23 Dusko Pavlovic , Bertfried Fauser

We display a family of Stone-type dualities linking categories of frames carrying pairs of modal operators to categories of spaces carrying a binary relation. Different notions of morphism used on the relational side lead to significant…

Category Theory · Mathematics 2026-04-23 Matthew Collinson

We introduce the quiver of a bicomodule over a cosemisimple coalgebra. Applying this to the coradical $C_0$ of an arbitrary coalgebra $C$, we give an alternative definition of the Gabriel quiver of $C$, and then show that it coincides with…

Representation Theory · Mathematics 2007-05-23 Xiao-Wu Chen , Hua-Lin Huang , Pu Zhang

In the first part of the paper we recall the coalgebraic approach to handling the so-called invisible transitions that appear in different state-based systems semantics. We claim that these transitions are always part of the unit of a…

Logic in Computer Science · Computer Science 2014-02-26 Tomasz Brengos

We introduce the concept of cotensor coalgebra for a given bicomodule over a coalgebra in an abelian monoidal category. Under some further conditions we show that such a cotensor coalgebra exists and satisfies a meaningful universal…

Quantum Algebra · Mathematics 2010-08-27 A. Ardizzoni , C. Menini , D. Stefan

This note contains a Stone-style representation theorem for compact Hausdorff spaces.

Logic · Mathematics 2007-05-23 Mirna Džamonja

The analysis of concurrent and reactive systems is based to a large degree on various notions of process equivalence, ranging, on the so-called linear-time/branching-time spectrum, from fine-grained equivalences such as strong bisimilarity…

Logic in Computer Science · Computer Science 2014-10-17 Alexander Kurz , Stefan Milius , Dirk Pattinson , Lutz Schröder

This paper is meant to give a short exposition of the Stone's Representation Theorems. We provide three equivalent approaches to construct a Stone's space from a given Boolean algebra. Finally, we utilize the Stone's Representation Theorems…

General Topology · Mathematics 2022-01-11 Hussain Rashed

In a recent paper by the authors, Lie bialgebras structures of generalized Virasoro-like type were considered. In this paper, the explicit formula of the quantization of generalized Virasoro-like algebras is presented.

Quantum Algebra · Mathematics 2007-05-23 Guang'ai Song , Yucai Su , Yuezhu Wu

We provide base change theorems, projection formulae and Verdier duality for both cohomology and homology in the context of finite topological spaces

Algebraic Topology · Mathematics 2021-02-09 Carmona Sánchez , V. , Maestro Pérez , C. , Sancho de Salas , F. , Torres Sancho , J. F