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We give a new and self-contained proof of the finite generation of adjoint rings with big boundaries. As a consequence, we show that the canonical ring of a smooth projective variety is finitely generated.

Algebraic Geometry · Mathematics 2019-12-19 Paolo Cascini , Vladimir Lazić

The colorful Helly theorem and Tverberg's theorem are fundamental results in discrete geometry. We prove a theorem which interpolates between the two. In particular, we show the following for any integers $d \geq m \geq 1$ and $k$ a prime…

Combinatorics · Mathematics 2024-03-25 Michael Gene Dobbins , Andreas F. Holmsen , Dohyeon Lee

We prove that if the set of unordered pairs of real numbers is colored by finitely many colors, there is a set of reals homeomorphic to the rationals whose pairs have at most two colors. Our proof uses large cardinals and it verifies a…

Logic · Mathematics 2020-12-23 Dilip Raghavan , Stevo Todorcevic

We prove the existence of minimal models for fibrations between dendroidal sets in the model structure for infinity-operads, as well as in the covariant model structure for algebras and in the stable one for connective spectra. In an…

Algebraic Topology · Mathematics 2016-12-21 Ieke Moerdijk , Joost Nuiten

We present a general procedure to construct examples of convex scalar variational problems which admit a minimizers with large singular sets. The dimension of the set of singularities is maximal and the minimizer has no higher integrability…

Analysis of PDEs · Mathematics 2023-12-27 Anna Balci , Lars Diening , Mikhail Surnachev

In this paper, we introduce and develop the circle embedding method. This method hinges essentially on a combinatorial-geometric structure which we choose to call circles of partition. We provide applications in the context of problems that…

General Mathematics · Mathematics 2026-04-21 Theophilus Agama , Berndt Gensel

We present several bijections, in terms of combinatorial objects counted by the Schr\"oder numbers, that are then used (via coloring) for the construction and enumeration of rational Schr\"oder paths with integer slope, ordered rooted…

Combinatorics · Mathematics 2022-03-15 Daniel Birmajer , Juan B. Gil , Juan D. Gil , Michael D. Weiner

We prove that the existence of log minimal models in dimension $d$ essentially implies the LMMP with scaling in dimension $d$. As a consequence we prove that a weak nonvanishing conjecture in dimension $d$ implies the minimal model…

Algebraic Geometry · Mathematics 2009-07-27 Caucher Birkar

The colorful Carath\'eodory theorem, proved by B\'ar\'any in 1982, states that given d+1 sets of points S_1,...,S_{d+1} in R^d, with each S_i containing 0 in its convex hull, there exists a subset T of the union of the S_i's containing 0 in…

Discrete Mathematics · Computer Science 2016-10-03 Frédéric Meunier , Pauline Sarrabezolles

We explore representing the compact subsets of a given represented space by infinite sequences over Plotkin's $\mathbb{T}$. We show that computably compact computable metric spaces admit representations of their compact subsets in such a…

Logic in Computer Science · Computer Science 2018-12-05 Arno Pauly , Hideki Tsuiki

We consider a generalization of the classic Sperner lemma. This lemma states that every Sperner coloring of a triangulation of a simplex contains a fully colored simplex. We found a weaker assumption than Sperner's coloring. It is also…

Combinatorics · Mathematics 2014-05-30 Oleg R Musin

We establish a "neighborhood" variant of the cubical KKM lemma and the Lebesgue covering theorem and deduce a discretized version which is a "neighborhood" variant of Sperner's lemma on the cube. The main result is the following: for any…

Combinatorics · Mathematics 2023-06-23 Jason Vander Woude , Peter Dixon , A. Pavan , Jamie Radcliffe , N. V. Vinodchandran

We prove that the entropy compression method systematized by L. Esperet and A. Parreau [11] can be applied to any problem formulated in the variable version of the Lov\'asz Local Lemma. As an application, we prove the existence of…

Combinatorics · Mathematics 2019-04-17 Rodrigo Bissacot , Luís Doin

We give tables of noncompact real forms of maximal reductive subalgebras of complex simple Lie algebras of rank up to 8. These were obtained by computational methods that we briefly describe. We also discuss applications in theoretical…

Rings and Algebras · Mathematics 2020-05-20 Willem A. de Graaf , Alessio Marrani

Word embedding maps words into a low-dimensional continuous embedding space by exploiting the local word collocation patterns in a small context window. On the other hand, topic modeling maps documents onto a low-dimensional topic space, by…

Computation and Language · Computer Science 2016-08-09 Shaohua Li , Tat-Seng Chua , Jun Zhu , Chunyan Miao

Consider a domain D in R^3 which is convex (possibly all R^3) or which is smooth and bounded. Given any open surface M, we prove that there exists a complete, proper minimal immersion f : M --> D. Moreover, if D is smooth and bounded, then…

Differential Geometry · Mathematics 2009-03-26 Leonor Ferrer , Francisco Martin , William H. Meeks

Rationally convex topological embeddings of compact surfaces (closed or with boundary) into $\mathbb{C}^2$ are constructed.

Complex Variables · Mathematics 2018-11-08 Luke Broemeling , Rasul Shafikov

Let $M$ be a compact $n$-dimensional Riemanian manifold, End($M$) the set of the endomorphisms of $M$ with the usual $\mathcal{C}^0$ topology and $\phi: M\to\mathbb{R}$ continuous. We prove that there exists a dense subset of $\mathcal{A}$…

Dynamical Systems · Mathematics 2021-02-25 Tatiane Cardoso Batista , Juliano dos Santos Gonschorowski , Fabio Armando Tal

Learning high-quality feature embeddings efficiently and effectively is critical for the performance of web-scale machine learning systems. A typical model ingests hundreds of features with vocabularies on the order of millions to billions…

Machine Learning · Computer Science 2024-06-19 Benjamin Coleman , Wang-Cheng Kang , Matthew Fahrbach , Ruoxi Wang , Lichan Hong , Ed H. Chi , Derek Zhiyuan Cheng

Finding surface mappings with least distortion arises from many applications in various fields. Extremal Teichm\"uller maps are surface mappings with least conformality distortion. The existence and uniqueness of the extremal…

Differential Geometry · Mathematics 2013-07-11 Lui Lok Ming , Gu Xianfeng , Yau Shing-Tung
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