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We present a new variant of the potential game and show that certain compact subsets of $\R^n$, including a large class of self-affine sets, are winning in our game. We prove that sets with sufficiently strong winning conditions are…

Dynamical Systems · Mathematics 2025-08-18 Richard A. Howat , Andrew Mitchell , Tony Samuel

We define a traced pseudomonoid as a pseudomonoid in a monoidal bicategory equipped with extra structure, giving a new characterisation of Cauchy complete traced monoidal categories as algebraic structures in Prof, the monoidal bicategory…

Category Theory · Mathematics 2021-12-30 Nick Hu , Jamie Vicary

We employ projective Fra\"iss\'e theory to define the "generic combinatorial $n$-simplex" as the pro-finite, simplicial complex that is canonically associated with a family of simply defined selection maps between finite triangulations of…

Logic · Mathematics 2021-05-28 Aristotelis Panagiotopoulos , Sławomir Solecki

We define a family of vertex colouring games played over a pair of graphs or digraphs $(G,H)$ by players $\forall$ and $\exists$. These games arise from work on a longstanding open problem in algebraic logic. It is conjectured that there is…

Combinatorics · Mathematics 2021-12-09 Rob Egrot , Robin Hirsch

Arboreal categories provide an axiomatic framework in which abstract notions of bisimilarity and back-and-forth games can be defined. They act on extensional categories, typically consisting of relational structures, via arboreal…

Logic in Computer Science · Computer Science 2025-02-05 Luca Reggio , Colin Riba

We introduce a new and natural stationary set preserving forcing $\mathbb P^{c-c}({\lambda},{\mu})$ that (under $\mathsf{NS}_{\omega_1}$ precipitous + existence of $H_{\theta}^#$ for a sufficiently large regular ${\theta}$) increases the…

Logic · Mathematics 2024-02-13 Ben De Bondt , Boban Velickovic

In this paper, we prove Fukui-Kurdyka-Paunescu's Conjecture, which says that subanalytic arc-analytic bi-Lipschitz homeomorphisms preserve the multiplicities of real analytic sets. We also prove several other results on the invariance of…

Algebraic Geometry · Mathematics 2021-08-18 Alexandre Fernandes , Zbigniew Jelonek , José Edson Sampaio

In view of the complexity of the dynamics of learning in games, we seek to decompose a game into simpler components where the dynamics' long-run behavior is well understood. A natural starting point for this is Helmholtz's theorem, which…

Computer Science and Game Theory · Computer Science 2024-05-21 Davide Legacci , Panayotis Mertikopoulos , Bary Pradelski

Let $f_1, ..., f_n$ be homogeneous polynomials generating a generic ideal $I$ in the ring of polynomials in $n$ variables over an infinite field. Moreno-Soc\'ias conjectured that for the graded reverse lexicographic term ordering, the…

Commutative Algebra · Mathematics 2007-05-23 Edith Aguirre , Abdul Salam Jarrah , Reinhard Laubenbacher , Juan Ariel Ortiz-Navarro , Rogelio Torrez

We define a traced pseudomonoid as a pseudomonoid in a monoidal bicategory equipped with extra structure, giving a new characterisation of Cauchy complete traced monoidal categories as algebraic structures in $\mathbf{Prof}$, the monoidal…

Category Theory · Mathematics 2024-03-12 Nick Hu , Jamie Vicary

We consider generic bricks and use them in the study of arbitrary biserial algebras over algebraically closed fields. For a biserial algebra $\Lambda$, we show that $\Lambda$ is brick-infinite if and only if it admits a generic brick, that…

Representation Theory · Mathematics 2025-05-12 Kaveh Mousavand , Charles Paquette

In the representation theory of finite-dimensional algebras, the study of projective presentations of maximal rank is closely related to the study of generically $\tau$-regular irreducible components of varieties of modules over such…

Representation Theory · Mathematics 2026-05-14 Grzegorz Bobiński , Jan Schröer

By resorting to the vector space structure of finite games, skew-symmetric games (SSGs) are proposed and investigated as a natural subspace of finite games. First of all, for two player games, it is shown that the skew-symmetric games form…

Computer Science and Game Theory · Computer Science 2017-12-11 Yaqi Hao , Daizhan Cheng

Let $\mathrm{PG}(k-1,q)$ be the $(k-1)$-dimensional projective space over the finite field $\mathbb{F}_q$. An arc in $\mathrm{PG}(k-1,q)$ is a set of points with the property that any $k$ of them span the entire space. The notion of…

Combinatorics · Mathematics 2026-02-27 Francesco Pavese , Paolo Santonastaso

The geodetic closure of a set S of vertices of a graph is the set of all vertices in shortest paths between pairs of vertices of S. A set S of vertices in a graph is geodetic if its geodetic closure contains all the vertices of the graph.…

Combinatorics · Mathematics 2025-03-13 Antoine Dailly , Harmender Gahlawat , Zin Mar Myint

We develop the theory of strong and commutative monads in the 2-dimensional setting of bicategories. This provides a framework for the analysis of effects in many recent models which form bicategories and not categories, such as those based…

Logic in Computer Science · Computer Science 2024-06-12 Hugo Paquet , Philip Saville

The main goal of this paper is to study topological and measure-theoretic properties of an intriguing family of strange planar attractors. Building towards these results, we first show that any generic Lebesgue measure preserving map $f$…

Dynamical Systems · Mathematics 2022-01-28 Jernej Činč , Piotr Oprocha

This paper investigates the class of finitely presented monoids defined by homogeneous (length-preserving) relations from a computational perspective. The properties of admitting a finite complete rewriting system, having finite derivation…

Group Theory · Mathematics 2017-05-16 Alan J. Cain , Robert Gray , António Malheiro

Game comonads, introduced by Abramsky, Dawar and Wang and developed by Abramsky and Shah, give an interesting categorical semantics to some Spoiler-Duplicator games that are common in finite model theory. In particular they expose…

Logic in Computer Science · Computer Science 2024-08-07 Adam Ó Conghaile , Anuj Dawar

In this project, we develop a new connection between the dynamics of quadratic polynomials on the complex plane and the dynamics of homeomorphisms of surfaces. In particular, given a quadratic polynomial, we investigate whether one can…

Dynamical Systems · Mathematics 2024-05-27 Mariam Al-Hawaj