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We summarize our geometric and topological description of compact eight-manifolds which arise as internal spaces in ${\cal N}=1$ flux compactifications of M-theory down to $\mathrm{AdS}_3$, under the assumption that the internal part of the…

High Energy Physics - Theory · Physics 2023-09-28 Elena Mirela Babalic , Calin Iuliu Lazaroiu

Taking a representation-theoretic viewpoint, we construct a continuous associahedron motivated by the realization of the generalized associahedron in the physical setting. We show that our associahedron shares important properties with the…

Representation Theory · Mathematics 2025-12-02 Maitreyee C. Kulkarni , Jacob P. Matherne , Kaveh Mousavand , Job D. Rock

We describe a framework for encoding cluster combinatorics using categorical methods. We give a definition of an abstract cluster structure, which captures the essence of cluster mutation at a tropical level and show that cluster algebras,…

Rings and Algebras · Mathematics 2025-10-06 Jan E. Grabowski , Sira Gratz

We study the topology of the link $M^{\mathrm{trop}}_{g,n}[1]$ of the tropical moduli spaces of curves when g=2. Tropical moduli spaces can be identified with boundary complexes for $\mathcal{M}_{g,n}$, as shown by…

Combinatorics · Mathematics 2015-07-15 Melody Chan

This is an expository article on the adic tropicalization of algebraic varieties. We outline joint work with Sam Payne in which we put a topology and structure sheaf of local topological rings on the exploded tropicalization. The resulting…

Algebraic Geometry · Mathematics 2015-06-03 Tyler Foster

The asymmetric tropical distance is a distance measure on the tropical torus $\mathbb{R}^n/\mathbb{R}\mathbf{1}$ and in particular on the Bergman fan $B(K_N) \subseteq \mathbb{R}^{\binom{N}{2}}/\mathbb{R}\mathbf{1}$ of the complete…

Combinatorics · Mathematics 2026-03-02 Fabian Lenzen , Lena Weis

The tree complex is a simplicial complex defined in recent work of Belk, Lanier, Margalit, and Winarski with natural applications to mapping class groups and complex dynamics. In this article, we connect this setting with the study of…

Combinatorics · Mathematics 2024-09-17 Michael Dougherty

We consider a binary classifier defined as the sign of a tropical rational function, that is, as the difference of two convex piecewise linear functions. The parameter space of ReLU neural networks is contained as a semialgebraic set inside…

Combinatorics · Mathematics 2024-03-19 Marie-Charlotte Brandenburg , Georg Loho , Guido Montúfar

Let $G$ be a connected semisimple Lie group. There are two natural duality constructions that assign to it the Langlands dual group $G^\vee$ and the Poisson-Lie dual group $G^*$. The main result of this paper is the following relation…

Representation Theory · Mathematics 2019-05-17 Anton Alekseev , Arkady Berenstein , Benjamin Hoffman , Yanpeng Li

We show that the tropicalization of an irreducible d-dimensional variety over a field of characteristic 0 is (d-l)-connected through codimension one, where l is the dimension of the lineality space of the tropicalization. From this we…

Algebraic Geometry · Mathematics 2021-09-23 Diane Maclagan , Josephine Yu

The subject of the present paper is phase tropicalization, which was used crucially in the context of Mikhalkin's correspondence theorem for curve counting in the complex coefficient case. The subject can be traced back to Viro's…

Algebraic Geometry · Mathematics 2026-04-28 Andrei Bengus-Lasnier , Mikhail Shkolnikov

We characterize compact eight-manifolds M which arise as internal spaces in N=1 flux compactifications of M-theory down to AdS3 using the theory of foliations, for the case when the internal part of the supersymmetry generator is everywhere…

High Energy Physics - Theory · Physics 2015-02-11 Elena Mirela Babalic , Calin Iuliu Lazaroiu

Let $A$ be an abelian variety with totally degenerate reduction over a non-Archimedean field. We describe the moduli space of semihomogeneous vector bundles on $A$ from the perspective of non-Archimedean uniformization and show that the…

Algebraic Geometry · Mathematics 2026-05-13 Andreas Gross , Inder Kaur , Martin Ulirsch , Annette Werner

This paper focuses on studying the configuration spaces of graphs realised in $\mathbb C^2$, such that the configuration space is, after normalisation, one dimensional. If this is the case, then the configuration space is, generically, a…

Metric Geometry · Mathematics 2025-01-30 Josef Schicho , Ayush Kumar Tewari , Audie Warren

We formulate and prove an analogue of the balancing condition for the tropicalization of a curve in a torus bundle $X$. We find that the usual balancing condition fails when the bundle is non-trivial and that the failure is captured by the…

Algebraic Geometry · Mathematics 2025-09-04 Emily Dodwell

This is a brief survey on the recently developing tropicalization method in cluster algebras and its applications to the periodicities of Y-systems and the associated dilogarithm identities.

Quantum Algebra · Mathematics 2012-10-29 Tomoki Nakanishi

We introduce combinatorial objects which are parameterized by the positive part of the tropical Grassmannian $Gr(k,n)$. Our method is to relate the Grassmannian to configuration spaces of flags. By work of the first author, and of Goncharov…

Algebraic Geometry · Mathematics 2017-10-16 Chris Fraser , Ian Le

This chapter provides a guide to our polymake extension cellularSheaves. We first define cellular sheaves on polyhedral complexes in Euclidean space, as well as cosheaves, and their (co)homologies. As motivation, we summarise some results…

Algebraic Geometry · Mathematics 2017-01-02 Lars Kastner , Kristin Shaw , Anna-Lena Winz

We introduce the notion of tropicalization for Poisson structures on $\mathbb{R}^n$ with coefficients in Laurent polynomials. To such a Poisson structure we associate a polyhedral cone and a constant Poisson bracket on this cone. There is a…

Symplectic Geometry · Mathematics 2015-05-14 Anton Alekseev , Irina Davydenkova

We describe a canonical compactification of a polyhedral complex in Euclidean space. When the recession cones of the polyhedral complex form a fan, the compactified polyhedral complex is a subspace of a tropical toric variety. In this case,…

Algebraic Geometry · Mathematics 2020-12-23 Lars Kastner , Kristin Shaw , Anna-Lena Winz