The category of extensions and a characterisation of n-exangulated functors
R Bennett-Tennenhaus, J Haugland, MH Sandøy… - Mathematische …, 2023 - Springer
Additive categories play a fundamental role in mathematics and related disciplines. Given
an additive category equipped with a biadditive functor, one can construct its category of …
an additive category equipped with a biadditive functor, one can construct its category of …
The role of gentle algebras in higher homological algebra
J Haugland, KM Jacobsen, S Schroll - Forum Mathematicum, 2022 - degruyter.com
We investigate the role of gentle algebras in higher homological algebra. In the first part of
the paper, we show that if the module category of a gentle algebra Λ contains ad-cluster …
the paper, we show that if the module category of a gentle algebra Λ contains ad-cluster …
The first higher Stasheff-Tamari orders are quotients of the higher Bruhat orders
NJ Williams - arXiv preprint arXiv:2012.10371, 2020 - arxiv.org
We prove the conjecture that the higher Tamari orders of Dimakis and M\" uller-Hoissen
coincide with the first higher Stasheff--Tamari orders. To this end, we show that the higher …
coincide with the first higher Stasheff--Tamari orders. To this end, we show that the higher …
Triangulations of Prisms and Preprojective Algebras of Type A
O Iyama, NJ Williams - International Mathematics Research …, 2024 - academic.oup.com
We show that isomorphism classes of indecomposable-rigid pairs over, the preprojective
algebra of, are in bijection with internal-simplices in the prism, the product of an-simplex with …
algebra of, are in bijection with internal-simplices in the prism, the product of an-simplex with …
The two higher Stasheff–Tamari orders are equal
NJ Williams - Journal of the European Mathematical Society, 2024 - ems.press
The set of triangulations of a cyclic polytope possesses two a priori different partial orders,
known as the higher Stasheff–Tamari orders. The first of these orders was introduced by …
known as the higher Stasheff–Tamari orders. The first of these orders was introduced by …
-cluster tilting subcategories for Nakayama algebras
M Herschend, S Kvamme, L Vaso - Mathematische Zeitschrift, 2025 - Springer
Abstract n Z-cluster tilting subcategories are an ideal setting for higher dimensional
Auslander–Reiten theory. We give a complete classification of n Z-cluster tilting …
Auslander–Reiten theory. We give a complete classification of n Z-cluster tilting …
[PDF][PDF] Quiver combinatorics and triangulations of cyclic polytopes
NJ Williams - Algebraic Combinatorics, 2023 - core.ac.uk
Motivated by higher homological algebra, we associate quivers to triangulations of even-
dimensional cyclic polytopes and prove two results showing what information about the …
dimensional cyclic polytopes and prove two results showing what information about the …
Recursive constructions for the higher Stasheff—Tamari orders in dimension three using the Outer Tamari and Tamari Block posets
L Nelson, K Treat - Discrete Mathematics, 2024 - Elsevier
We define a poset called the Outer Tamari poset, and show it is isomorphic to a subposet of
the Tamari lattice introduced by Pallo (1986), and studied further and called the Comb poset …
the Tamari lattice introduced by Pallo (1986), and studied further and called the Comb poset …
Higher homological algebra for one-point extensions of bipartite hereditary algebras and spectral graph theory
KM Jacobsen, MH Sandøy, L Vaso - arXiv preprint arXiv:2411.00470, 2024 - arxiv.org
In this article we study higher homological properties of $ n $-levelled algebras and connect
them to properties of the underlying graphs. Notably, to each $2 $-representation-finite …
them to properties of the underlying graphs. Notably, to each $2 $-representation-finite …
Dominant Auslander-Gorenstein algebras and Koszul duality
A Chan, O Iyama, R Marczinzik - arXiv preprint arXiv:2210.06180, 2022 - arxiv.org
We introduce the class of dominant Auslander-Gorenstein algebras as a generalisation of
higher Auslander algebras and minimal Auslander-Gorenstein algebras, and give their …
higher Auslander algebras and minimal Auslander-Gorenstein algebras, and give their …