Results 111 to 120 of about 147,491 (227)

Mirror symmetry, Laurent inversion, and the classification of Q$\mathbb {Q}$‐Fano threefolds

Transactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract We describe recent progress in a program to understand the classification of three‐dimensional Fano varieties with Q$\mathbb {Q}$‐factorial terminal singularities using mirror symmetry. As part of this we give an improved and more conceptual understanding of Laurent inversion, a technique that sometimes allows one to construct a Fano variety X$
Tom Coates, Liana Heuberger, Alexander M. Kasprzyk   +2 more
wiley   +1 more source

The combinatorics of frieze patterns and Markoff numbers [PDF]

, 2005
James Propp
openalex   +1 more source

7‐Location, weak systolicity, and isoperimetry

Transactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract m$m$‐Location is a local combinatorial condition for flag simplicial complexes introduced by Osajda. Osajda showed that simply connected 8‐located locally 5‐large complexes are hyperbolic. We treat the nonpositive curvature case of 7‐located locally 5‐large complexes.
Nima Hoda, Ioana‐Claudia Lazăr
wiley   +1 more source

Real models for the framed little n$n$‐disks operads

Journal of Topology, Volume 18, Issue 4, December 2025.
Abstract We study the action of the orthogonal group on the little n$n$‐disks operads. As an application we provide small models (over the reals) for the framed little n$n$‐disks operads. It follows in particular that the framed little n$n$‐disks operads are formal (over the reals) for n$n$ even and coformal for all n$n$.
Anton Khoroshkin, Thomas Willwacher
wiley   +1 more source

Enumerative Combinatorics of Simplicial and Cell Complexes: Kirchhoff and Trent Type Theorems [PDF]

, 2018
Sylvain E. Cappell, Edward Y. Miller
openalex   +1 more source

The Gini Index in Algebraic Combinatorics and Representation Theory [PDF]

, 2022
Grant Kopitzke
openalex   +1 more source

Combinatorics and Geometry of Finite and Infinite Squaregraphs [PDF]

, 2010
Hans‐Jürgen Bandelt, Victor Chepoi, David Eppstein   +2 more
openalex   +1 more source

Extremal Combinatorics and Universal Algorithms

, 2018
Stefan David
openalex   +1 more source

Block Combinatorics [PDF]

, 2004
Vassiliki Farmaki, S. Negrepontis
openalex   +1 more source

Circular Chromatic Number of Signed Planar Graphs Without Cycles of Length 4 to 9

Mathematics
Given a signed graph (G,σ) and a positive real number r, if there exists a vertex mapping c:V(G)→[0,r) satisfying that for every positive edge wx, 1≤|c(w)−c(x)|≤r−1 and for every negative edge wx, |c(w)−c(x)|≤r2−1 or |c(w)−c(x)|≥r2+1, then (G,σ) admits a
Chunyan Wei
doaj   +1 more source