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We explore partitions that lie in the intersection of several sets of classical interest: partitions with parts indivisible by $m$, appearing fewer than $m$ times, or differing by less than $m$. We find results on their behavior and…

Combinatorics · Mathematics 2019-11-13 William J. Keith

Inspired by classical puzzles in geometry that ask about probabilities of geometric phenomena, we give an explicit formula for the probability that a random triangle on a flat torus is homotopically trivial. Our main tool for this…

Combinatorics · Mathematics 2020-03-19 Olivier Glorieux , Andrew Yarmola

Motivated by Pittel's study of minimally intersecting set partitions, we investigate minimally intersecting set partitions of type B. We find a formula for the number of minimally intersecting r-tuples of $B_n$-partitions, as well as a…

Combinatorics · Mathematics 2009-10-07 William Y. C. Chen , David G. L. Wang

We look for best partitions of the unit interval that minimize certain functionals defined in terms of the eigenvalues of Sturm-Liouville problems. Via \Gamma-convergence theory, we study the asymptotic distribution of the minimizers as the…

Optimization and Control · Mathematics 2018-12-19 Paolo Tilli , Davide Zucco

Minimal surfaces are among the most natural objects in Differential Geometry, and have been studied for the past 250 years ever since the pioneering work of Lagrange. The subject is characterized by a profound beauty, but perhaps even more…

Differential Geometry · Mathematics 2014-09-29 Fernando Coda Marques

In this paper, we attempt to explore the landscape of two-dimensional conformal field theories (2d CFTs) by efficiently searching for numerical solutions to the modular bootstrap equation using machine-learning-style optimization. The torus…

High Energy Physics - Theory · Physics 2026-05-05 Nathan Benjamin , A. Liam Fitzpatrick , Wei Li , Jesse Thaler

New CP1-soliton behaviour on a flat torus is reported. Defined by the Weierstrass elliptic function and numerically-evolved from rest, each soliton splits up in two lumps which eventually reunite, divide and get back together again, etc..…

High Energy Physics - Theory · Physics 2008-11-26 R. J. Cova

A spectral minimal partition of a manifold is a decomposition into disjoint open sets that minimizes a spectral energy functional. While it is known that bipartite minimal partitions correspond to nodal partitions of Courant-sharp Laplacian…

Analysis of PDEs · Mathematics 2024-11-05 Gregory Berkolaiko , Yaiza Canzani , Graham Cox , Peter Kuchment , Jeremy L. Marzuola

We prove the existence of a perimeter-minimizing partition of R^n into regions of unit volume. We conclude with a short tribute to the late Manuel A. Fortes.

Metric Geometry · Mathematics 2009-11-13 Frank Morgan

We devise a polynomial-time algorithm for partitioning a simple polygon $P$ into a minimum number of star-shaped polygons. The question of whether such an algorithm exists has been open for more than four decades [Avis and Toussaint,…

Computational Geometry · Computer Science 2026-03-11 Mikkel Abrahamsen , Joakim Blikstad , André Nusser , Hanwen Zhang

This article contains the notes of a graduate course on birational geometry focusing on the minimal model program. Topics covered include singularities, vanishing, nonvanishing, cone and contraction, base point freeness, finite generation,…

Algebraic Geometry · Mathematics 2007-06-14 Caucher Birkar

In this paper we show that the cutoff in separation profile for Brownian motion on flat torus T n\,; on spheres S n\,; on real, complex and quaternionic projective space resp. P n pRq, P n pCq and P n pHq, is the tail distribution of some…

Probability · Mathematics 2026-03-25 Koléhè Coulibaly-Pasquier

I survey problems concerning Lindelof spaces which have partial set- theoretic solutions.

Logic · Mathematics 2011-04-19 Franklin D. Tall

We show that a recent spectral flow approach proposed by Berkolaiko-Cox-Marzuola for analyzing the nodal deficiency of the nodal partition associated to an eigenfunction can be extended to more general partitions. To be more precise, we…

Spectral Theory · Mathematics 2021-03-16 Bernard Helffer , Mikael Persson Sundqvist

We consider the problem of learning low-rank tensors from partial observations with structural constraints, and propose a novel factorization of such tensors, which leads to a simpler optimization problem. The resulting problem is an…

Machine Learning · Computer Science 2023-05-16 Jayadev Naram , Tanmay Kumar Sinha , Pawan Kumar

In this paper, we consider new components of the key space of the Moduli space of minimal surfaces in flat 4-tori and calculate their dimensions. Moreover, we construct an example of minimal surfaces in 4-tori and obtain an element of the…

Differential Geometry · Mathematics 2007-05-23 Toshihiro Shoda

We establish new orthonormal Strichartz estimates for the fractional Schr\"odinger equations on torus $\mathbb T$ and waveguide manifold $\mathbb R^n\times \mathbb T^m$. We generalizes the result of Nakamura [42] on torus; while this is the…

Analysis of PDEs · Mathematics 2025-10-29 Divyang G. Bhimani , Subhash. R. Choudhary

We develop a method to find a set of diminimal polyhedral maps on the torus from which all other polyhedral maps on the torus may be generated by face splitting and vertex splitting. We employ this method, though not to its completion, to…

Combinatorics · Mathematics 2007-05-23 Jennifer Henry

We prove the existence of periodic tessellations of $\mathbb{R}^N$ minimizing a general nonlocal perimeter functional, defined as the interaction between a set and its complement through a nonnegative kernel, which we assume to be either…

Analysis of PDEs · Mathematics 2024-08-22 Annalisa Cesaroni , Ilaria Fragalà , Matteo Novaga

The purpose of this article is three-fold. First, we apply a general theorem from our earlier work to produce many new minimal doublings of the Clifford Torus in the round three-sphere. This construction generalizes and unifies prior…

Differential Geometry · Mathematics 2024-11-04 Nikolaos Kapouleas , Peter McGrath