Flat universe
  • Home
  • Articles

      On a symplectic quantum Howe duality

      March 7, 2023

      | | |

      Mathematics
      Representation Theory
      Quantum Algebra
      Rings and Algebras
      Representation Theory
      Quantum Algebra
      Rings and Algebras
      We prove a nonsemisimple quantum version of Howe's duality with the rank 2n symplectic and the rank 2 special linear group acting on the exterior algebra of type C. We also discuss the first steps towards the symplectic analog of harmonic a...

      Scattering of Dirac Fields in the Interior of Kerr-Newman(-Anti)-de Sitter Black Holes via Comparison and Symmetry Operators

      March 7, 2023

      | | |

      Physics
      Mathematics
      General Relativity and Quantum Cosmology
      Mathematical Physics
      Analysis of PDEs
      Mathematical Physics
      General Relativity and Quantum Cosmology
      Mathematical Physics
      Analysis of PDEs
      Mathematical Physics
      In this paper we construct a scattering theory for the massive and charged Dirac fields in the interiors of sub-extremal Kerr-Newman(-anti)-de Sitter black holes. More precisely, we show existence, uniqueness and asymptotic completeness of ...

      TS-SEP: Joint Diarization and Separation Conditioned on Estimated Speaker Embeddings

      March 7, 2023

      | | | | | | | | |

      Electrical Engineering and Systems Science
      Computer Science
      Audio and Speech Processing
      Sound
      Audio and Speech Processing
      Sound
      Since diarization and source separation of meeting data are closely related tasks, we here propose an approach to perform the two objectives jointly. It builds upon the target-speaker voice activity detection (TS-VAD) diarization approach, ...

      PRIMO: Private Regression in Multiple Outcomes

      March 7, 2023

      |

      Computer Science
      Machine Learning
      Cryptography and Security
      Machine Learning
      Cryptography and Security
      We introduce a new private regression setting we call Private Regression in Multiple Outcomes (PRIMO), inspired by the common situation where a data analyst wants to perform a set of lll regressions while preserving privacy, where the featu...

      Evidence for Widespread Hydrogen Sequestration within the Moon's South Polar Cold Traps

      March 7, 2023

      | | | | | | | | | | and others

      Physics
      Earth and Planetary Astrophysics
      Earth and Planetary Astrophysics
      The measured neutron flux from the Moons south polar region shows evidence of locally enhanced hydrogen concentrations, likely in the form of water ice, within most permanently shadowed regions (PSR), poleward of 77 deg S latitude. Results ...

      Active learning of data-assimilation closures using Graph Neural Networks

      March 7, 2023

      | | | | | | |

      Physics
      Fluid Dynamics
      Fluid Dynamics
      The spread of machine learning techniques coupled with the availability of high-quality experimental and numerical data has significantly advanced numerous applications in fluid mechanics. Notable among these are the development of data ass...

      Cascading GEMM: High Precision from Low Precision

      March 7, 2023

      | | | | |

      Computer Science
      Mathematical Software
      Mathematical Software
      This paper lays out insights and opportunities for implementing higher-precision matrix-matrix multiplication (GEMM) from (in terms of) lower-precision high-performance GEMM. The driving case study approximates double-double precision (FP64...

      New Perspectives on Regularization and Computation in Optimal Transport-Based Distributionally Robust Optimization

      March 7, 2023

      | | | | | | |

      Mathematics
      Computer Science
      Statistics
      Optimization and Control
      Artificial Intelligence
      Machine Learning
      Optimization and Control
      Artificial Intelligence
      Machine Learning
      We study optimal transport-based distributionally robust optimization problems where a fictitious adversary, often envisioned as nature, can choose the distribution of the uncertain problem parameters by reshaping a prescribed reference dis...

      Flexibility of the adjoint action of the group of Hamiltonian diffeomorphisms

      March 7, 2023

      | | |

      Mathematics
      Symplectic Geometry
      Symplectic Geometry
      On a closed and connected symplectic manifold, the group of Hamiltonian diffeomorphisms has the structure of an infinite-dimensional Fr\'echet Lie group, where the Lie algebra is naturally identified with the space of smooth and zero-mean n...

      Extremes in High Dimensions: Methods and Scalable Algorithms

      March 7, 2023

      | | |

      Statistics
      Mathematics
      Methodology
      Statistics Theory
      Statistics Theory
      Methodology
      Statistics Theory
      Statistics Theory
      Extreme value theory for univariate and low-dimensional observations has been explored in considerable detail, but the field is still in an early stage regarding high-dimensional settings. This paper focuses on H\"usler-Reiss models, a popu...
      • Previous
        • 1More pages
      • 18424
      • 18425
      • 18426
      • 18427
      • 18428
        • More pages20131
      • Next