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It is known a vector linear solution may exist if and only if the characteristic of the finite field belongs to a certain set of primes. But, can increasing the message dimension make a network vector linearly solvable over a larger set of…

Information Theory · Computer Science 2019-07-30 Niladri Das , Brijesh Kumar Rai

The aim of this paper is to investigate weakly developable spaces. For a comparison with semi-metrizable spaces, we introduce and study a class of spaces among those of weakly developable spaces, semimetrizable spaces and first countable…

General Topology · Mathematics 2013-10-03 Boualem Alleche

Word embeddings have become a staple of several natural language processing tasks, yet much remains to be understood about their properties. In this work, we analyze word embeddings in terms of their principal components and arrive at a…

Computation and Language · Computer Science 2020-05-22 Vikas Raunak , Vaibhav Kumar , Vivek Gupta , Florian Metze

In recent decades, the defect of finite extensions of valued fields has emerged as the main obstacle in several fundamental problems in algebraic geometry such as the local uniformization problem. Hence, it is important to identify…

Commutative Algebra · Mathematics 2025-03-24 Caio Henrique Silva de Souza , Mark Spivakovsky

The goal of this contribution is to investigate L${}^2$ extension properties for holomorphic sections of vector bundles satisfying weak semi-positivity properties. Using techniques borrowed from recent proofs of the Ohsawa-Takegoshi…

Complex Variables · Mathematics 2015-10-20 Jean-Pierre Demailly

In this paper, we study multivariate vector sampling expansions on general finitely generated shift-invariant subspaces. Necessary and sufficient conditions for a multivariate vector sampling theorem to hold are given.

Information Theory · Computer Science 2015-03-17 Qingyue Zhang

In this paper, we establish a general version of the large sieve with additive characters for restricted sets of moduli in arbitrary dimension for function fields. From this, we derive function field versions for the large sieve in high…

Number Theory · Mathematics 2019-10-16 Stephan Baier , Rajneesh Kumar Singh

In this paper, it is proved that certain stable rank-3 vector bundles can be written as extensions of line bundles and stable rank-2 bundles. As an application, we show the rationality of certain moduli spaces of stable rank-3 bundles over…

Algebraic Geometry · Mathematics 2009-09-25 Wei-ping Li , Zhenbo Qin

A characterization of module alphabets with the Hamming weight EP (abbreviation for Extension Property) had been settled. A thoughtfully constructed example by J.A.Wood finished the tour. Frobenius bimodules were proved to satisfy the EP…

Information Theory · Computer Science 2014-12-19 Ali Assem

Given a matrix over a skew field fixing the column (1,...,1)^t, we give formulas for a row vector fixed by this matrix. The same techniques are applied to give noncommutative extensions of probabilistic properties of codes.

Rings and Algebras · Mathematics 2008-09-01 Sylvain Lavallée , Christophe Reutenauer , Vladimir Retakh , Dominique Perrin

We investigate modules for which vanishing of Tor-modules implies finiteness of homological dimensions (e.g., projective dimension and G-dimension). In particular, we answer a question of O. Celikbas and Sather-Wagstaff about ascent…

Commutative Algebra · Mathematics 2019-11-19 Sean K. Sather-Wagstaff

A surprising property of word vectors is that word analogies can often be solved with vector arithmetic. However, it is unclear why arithmetic operators correspond to non-linear embedding models such as skip-gram with negative sampling…

Computation and Language · Computer Science 2019-08-13 Kawin Ethayarajh , David Duvenaud , Graeme Hirst

We show that the sequence of dimensions of the linear spaces, generated by a given rank-metric code together with itself under several applications of a field automorphism, is an invariant for the whole equivalence class of the code. These…

Information Theory · Computer Science 2019-05-28 Alessandro Neri , Sven Puchinger , Anna-Lena Horlemann-Trautmann

In this work, we have introduced and studied some basic geometric properties of extended weakly symmetric spaces. After classification of this structure we have also established the existence of such a space by presenting a non-trivial…

Differential Geometry · Mathematics 2022-06-03 Kanak Kanti Baishya , Sanjib Kr Jana , Manoj Ray Bakshi , Malay Pain , Haradhan Kundu

I discuss possible definitions of categories of vector spaces enriched with a notion of formal infinite linear combination in the likes of the formal infinite linear combinations one has in the context of generalized power series, I call…

Category Theory · Mathematics 2026-03-10 Pietro Freni

Existing algorithms for aligning cross-lingual word vector spaces assume that vector spaces are approximately isomorphic. As a result, they perform poorly or fail completely on non-isomorphic spaces. Such non-isomorphism has been…

Computation and Language · Computer Science 2020-10-21 Ivan Vulić , Sebastian Ruder , Anders Søgaard

We prove extension theorems for several geometric properties such as asymptotic property C (APC), finite decomposition complexity (FDC), strict finite decomposition complexity (sFDC) which are weakenings of Gromov's finite asymptotic…

Geometric Topology · Mathematics 2018-04-04 Susan Beckhardt , Boris Goldfarb

We shall prove an extension of the semipositivity theorem for the case of reducible algebraic fiber spaces.

Algebraic Geometry · Mathematics 2009-11-10 Yujiro Kawamata

We consider the problem of constructing a weakly-continuous mapping extending continuous mapping defined on a dense set of a topological space to the entire space. Theorem on necessary and sufficient conditions for the existence of such an…

General Topology · Mathematics 2026-03-04 Andrew Ryabikov

We develop a theory of ordered *-vector spaces with an order unit. We prove fundamental results concerning positive linear functionals and states, and we show that the order (semi)norm on the space of self-adjoint elements admits multiple…

Operator Algebras · Mathematics 2009-06-10 Vern Paulsen , Mark Tomforde