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Multilingual neural machine translation has shown the capability of directly translating between language pairs unseen in training, i.e. zero-shot translation. Despite being conceptually attractive, it often suffers from low output quality.…

Computation and Language · Computer Science 2021-07-02 Danni Liu , Jan Niehues , James Cross , Francisco Guzmán , Xian Li

With the $[0,1,2]$-family of cyclic triangulations we introduce a rich class of vertex-transitive triangulations of surfaces. In particular, there are infinite series of cyclic $q$-equivelar triangulations of orientable and non-orientable…

Combinatorics · Mathematics 2010-01-19 Frank H. Lutz

We study infinite translation surfaces which are Z-covers of compact translation surfaces. We obtain conditions ensuring that such surfaces have Veech groups which are Fuchsian of the first kind and give a necessary and sufficient condition…

Dynamical Systems · Mathematics 2009-05-25 W. Patrick Hooper , Barak Weiss

In the authors' previous work, it was shown that if a zero mean curvature $C^4$-differentiable hypersurface in an arbitrarily given Lorentzian manifold admits a degenerate light-like point, then the hypersurface contains a light-like…

Differential Geometry · Mathematics 2020-03-30 Masaaki Umehara , Kotaro Yamada

Transformer is a ubiquitous model for natural language processing and has attracted wide attentions in computer vision. The attention maps are indispensable for a transformer model to encode the dependencies among input tokens. However,…

Machine Learning · Computer Science 2021-02-26 Yujing Wang , Yaming Yang , Jiangang Bai , Mingliang Zhang , Jing Bai , Jing Yu , Ce Zhang , Gao Huang , Yunhai Tong

Visual translation tolerance refers to our capacity to recognize objects over a wide range of different retinal locations. Although translation is perhaps the simplest spatial transform that the visual system needs to cope with, the extent…

Neurons and Cognition · Quantitative Biology 2020-12-09 Ryan Blything , Valerio Biscione , Ivan I. Vankov , Casimir J. H. Ludwig , Jeffrey S. Bowers

We introduce a framework of translation quiver varieties which includes Nakajima quiver varieties as well as their graded and cyclic versions. An important feature of translation quiver varieties is that the sets of their fixed points under…

Algebraic Geometry · Mathematics 2022-02-21 Sergey Mozgovoy

This paper combines two ingredients in order to get a rather surprising result on one of the most studied, elegant and powerful tools for solving convex feasibility problems, the method of alternating projections (MAP). Going back to names…

Optimization and Control · Mathematics 2021-11-11 Roger Behling , Yunier Bello-Cruz , Luiz-Rafael Santos

Hallucination, one kind of pathological translations that bothers Neural Machine Translation, has recently drawn much attention. In simple terms, hallucinated translations are fluent sentences but barely related to source inputs. Arguably,…

Computation and Language · Computer Science 2022-06-28 Jianhao Yan , Fandong Meng , Jie Zhou

There exist four non-equivalent types of the translation hypersurfaces in the 4-dimensional isotropic space $\mathbb{I}^{4}$ generated by translating the curves lying in perpendicular $k-$planes $\left(k=2,3\right)$, due to its absolute…

Differential Geometry · Mathematics 2017-11-27 Muhittin Evren Aydin , Alper Osman Ogrenmis

A classification of spanning surfaces for alternating links is provided up to genus, orientability, and a new invariant that we call aggregate slope. That is, given an alternating link, we determine all possible combinations of genus,…

Geometric Topology · Mathematics 2014-10-01 Colin Adams , Thomas Kindred

We prove that almost every interval exchange transformation, with an associated translation surface of genus $g\geq 2$, can be non-trivially and isometrically embedded in a family of piecewise isometries. In particular this proves the…

Dynamical Systems · Mathematics 2025-06-11 Pedro Peres , Ana Rodrigues

For a hypersurface in a projective space, we consider the set of pairs of a point and a line in the projective space such that the line intersects the hypersurface at the point with a fixed multiplicity. We prove that this set of pairs…

Algebraic Geometry · Mathematics 2010-12-13 Atsushi Ikeda

A definition of non-abelian genus zero open Wilson surfaces is proposed. The ambiguity in surface-ordering is compensated by the gauge transformations.

High Energy Physics - Theory · Physics 2014-11-18 Iouri Chepelev

We show that a 3-manifold containing an incompressible surface has topologically minimal surfaces of arbitrary high genus.

Geometric Topology · Mathematics 2013-01-22 Jung Hoon Lee

We introduce the concept of pseudo-trisections of smooth oriented compact 4-manifolds with boundary. The main feature of pseudo-trisections is that they have lower complexity than relative trisections for given 4-manifolds. We prove…

Geometric Topology · Mathematics 2025-02-19 Shintaro Fushida-Hardy

It has been shown that for a given set of points in a plane, the least-squares regression line pivots about a fixed point when any single point in the set is repeated. We consider what happens when more than one point is repeated.…

Combinatorics · Mathematics 2020-07-14 Sable Levy

A bielliptic surface (or hyperelliptic surface) is a smooth surface with a numerically trivial canonical divisor such that the Albanese morphism is an elliptic fibration. In the first part of this paper, we study the structure of bielliptic…

Algebraic Geometry · Mathematics 2025-09-10 Teppei Takamatsu

Given a smooth subscheme of a projective space over a finite field, we compute the probability that its intersection with a fixed number of hypersurface sections of large degree is smooth of the expected dimension. This generalizes the case…

Number Theory · Mathematics 2015-03-13 Alina Bucur , Kiran S. Kedlaya

This article is a survey article that gives detailed constructions and illustrations of some of the standard examples of non-orientable surfaces that are embedded and immersed in 4-dimensional space. The illustrations depend upon their…

Geometric Topology · Mathematics 2014-07-24 Yongju Bae , J. Scott Carter , Seonmi Choi , Sera Kim