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When the quotient of a symplectic vector space by the action of a finite subgroup of symplectic automorphisms admits as a crepant projective resolution of singularities the Hilbert scheme of regular orbits of Nakamura, then there is a…

Algebraic Geometry · Mathematics 2007-05-23 Samuel Boissiere

Re-ranking is a process of rearranging ranking list to more effectively meet user demands by accounting for the interrelationships between items. Existing methods predominantly enhance the precision of search results, often at the expense…

Information Retrieval · Computer Science 2024-05-27 Huimu Wang , Mingming Li , Dadong Miao , Songlin Wang , Guoyu Tang , Lin Liu , Sulong Xu , Jinghe Hu

We present an operational reconstruction of the well-known two-to-one homomorphism between the groups $SU(2)$ and $SO(3)$, grounded in the physical description of quantum state preparation and evolution. Starting from the connection between…

Quantum Physics · Physics 2025-12-02 V. G. Valle , B. F. Rizzuti

We investigate the existence of coordinate transformations which bring a given vector field on a manifold equipped with an involutive distribution into the form of a second-order differential equation field with parameters. We define…

Differential Geometry · Mathematics 2011-12-06 T. Mestdag , M. Crampin

Existing multi-objective reinforcement learning (MORL) algorithms do not account for objectives that arise from players with differing beliefs. Concretely, consider two players with different beliefs and utility functions who may cooperate…

Artificial Intelligence · Computer Science 2017-05-16 Andrew Critch

In this paper, we experimentally compare major approval-based multiwinner voting rules. To this end, we define a measure of similarity between two equal-sized committees subject to a given election. Using synthetic elections coming from…

Computer Science and Game Theory · Computer Science 2024-01-23 Piotr Faliszewski , Martin Lackner , Krzysztof Sornat , Stanisław Szufa

We formulate a relationship between finite-order rondle invariants with respect to triple-point modifications and the lower central series of subgroups of a pure twin group. Using our formulation, we construct infinitely many infinite…

Geometric Topology · Mathematics 2026-05-26 Noboru Ito

In this paper we introduce a description of ordered groupoids as a particular type of double categories. This enables us to turn Lawson's correspondence between ordered groupoids and left-cancellative categories into a biequivalence. We use…

Category Theory · Mathematics 2019-10-08 Darien DeWolf , Dorette Pronk

We formalize trust calibration for agentic tool use (deciding when an automated agent's proposed action may execute autonomously versus require human approval) as a preference-learning problem. A policy gateway maintains a Gaussian-process…

Artificial Intelligence · Computer Science 2026-05-20 Changkun Ou

Let $N \subset M$ be a submanifold embedding of spin manifolds of some codimension $k \geq 1$. A classical result of Gromov and Lawson, refined by Hanke, Pape and Schick, states that $M$ does not admit a metric of positive scalar curvature…

Algebraic Topology · Mathematics 2022-03-18 Martin Nitsche , Thomas Schick , Rudolf Zeidler

The paper is devoted to developing subdifferential theory for set-valued mappings taking values in ordered infinite-dimensional spaces. This study is motivated by applications to problems of vector and set optimization with various…

Optimization and Control · Mathematics 2024-10-16 Boris S. Mordukhovich , Oanh Nguyen

This paper investigates user preferences for Linear Top-k Queries and Directional Top-k Queries, two methods for ranking results in multidimensional datasets. While Linear Queries prioritize weighted sums of attributes, Directional Queries…

Databases · Computer Science 2025-01-22 Xiaolei Jiang

This paper proposes the estimation of a mutual shape from a set of different segmentation results using both active contours and information theory. The mutual shape is here defined as a consensus shape estimated from a set of different…

Image and Video Processing · Electrical Eng. & Systems 2021-02-18 S. Jehan-Besson , R. Clouard , C. Tilmant , A. de Cesare , A. Lalande , J. Lebenberg , P. Clarysse , L. Sarry , F. Frouin , M. Garreau

Let $G$ be a finite group. For all $a \in \Z$, such that $(a,|G|)=1$, the function $\rho_a: G \to G$ sending $g$ to $g^a$ defines a permutation of the elements of $G$. Motivated by a recent generalization of Zolotarev's proof of classic…

Group Theory · Mathematics 2013-11-14 Márton Hablicsek , Guillermo Mantilla-Soler

We consider the cheating strategies for the popular matchings problem. The popular matchings problem can be defined as follows: Let G = (A U P, E) be a bipartite graph where A denotes a set of agents, P denotes a set of posts and the edges…

Data Structures and Algorithms · Computer Science 2013-01-08 Meghana Nasre

User embeddings (vectorized representations of a user) are essential in recommendation systems. Numerous approaches have been proposed to construct a representation for the user in order to find similar items for retrieval tasks, and they…

Information Retrieval · Computer Science 2023-05-29 Hui Shi , Yupeng Gu , Yitong Zhou , Bo Zhao , Sicun Gao , Jishen Zhao

Many tight frames of interest are constructed via their Gramian matrix (which determines the frame up to unitary equivalence). Given such a Gramian, it can be determined whether or not the tight frame is projective group frame, i.e., is the…

Representation Theory · Mathematics 2018-06-19 Shayne Waldron

We extend Approval voting to the settings where voters may have intransitive preferences. The major obstacle to applying Approval voting in these settings is that voters are not able to clearly determine who they should approve or…

Computer Science and Game Theory · Computer Science 2017-02-28 Yongjie Yang

Should humans be asked to evaluate entities individually or comparatively? This question has been the subject of long debates. In this work, we show that, interestingly, combining both forms of preference elicitation can outperform the…

Machine Learning · Computer Science 2026-02-10 Julien Fageot , Matthias Grossglauser , Lê-Nguyên Hoang , Matteo Tacchi-Bénard , Oscar Villemaud

We give an explicit decription for univeral principal U(r)-bundles with periodic map by means of equivariant Stiefel manifolds. We then show that the associated equivariant vector bundle is equivalent to the canonical one given by G. Segal.…

Algebraic Topology · Mathematics 2007-05-23 Abdelouahab Arouche